# Preprints - Douglas B. West

For additional information, see my
home page.
Versions of almost all my papers are available here. Those since 1995
are mostly preprints; the earlier papers are mostly downloads of final
published versions.
Note: URL for access by DOI is http://dx.doi.org/[DOI].
### PDF Slides for Recent Invited Lectures
(here for earlier lectures)

"The Slow-Coloring Game" slides:
University of the Philippines (Sep 2019);
9th Slovenian Conference on Graph Theory, Bled, Slovenia (Jun 2019,
short version);
3rd Xi'an International Workshop on Graph Theory and Combinatorics (May 2018);
2018 International Workshop on Graph Theory, Ewha Women's University, Seoul,
Korea (Jan 2018)
"Reconstruction from the Deck of *k*-vertex induced subgraphs"
slides: Northwest Polytechnic Institute, Xi'an, China
(May 2018); 58th MIdwest GrapH TheorY Meeting (MIGHTY LVIII), Grand Valley
State Univ, Allendale, MI (Oct 2017)
"An Introduction to the Discharging Method via Graph Coloring":
slides 31st Midwest Conference on Combinatorics
and Combinatorial Computing (MCCCC 31), Univ of West Georgia (Oct 2017);
Oakland University math camp (Aug 2017); earlier two-talk
slides for 3rd KIAS Combinatorics Workshop,
Seoul (Mar 2014); 44th SE Intl Conf on Combinatorics, Graph
Theory, and Computing, Boca Raton, FL (Mar 2013)
"Coloring, Sparseness, and Girth" slides:
Beauty of Discrete Mathematics, Montreal, Canada (Oct 2017);
3rd Istanbul Design Theory, Graph Theory and Combinatorics Workshop (Jun 2016);
Intl Workshop on Graph Theory and Combinatorics, Coimbatore (Dec 2015);
8th Slovenian Conference on Graph Theory, Kranjska Gora (Jun 2015)
"Ordered Ramsey Theory and Track Representations of Graphs"
slides: 16th Haifa Workshop on Interdisciplinary
Applications of Graphs, Combinatorics and Algorithms (Jun 2016)
"Fractional Separation Dimension: A Fractional Covering Problem"
slides: 16th Haifa Workshop on Interdisciplinary
Applications of Graphs, Combinatorics and Algorithms (Jun 2016)

Special biographical article: "Kleitman and Combinatorics: A Celebration"
(authored as part of G.W. Peck) *Discrete Mathematics* 257 (2002), 193-224.
pdf
Open problem for Sanya meeting: Parity and strong parity edge-colorings
of graphs
pdf (2pp)
### Preprints (including publication data and pdf slides where
available)

253.
Lichiardopol's conjecture on disjoint cycles in tournaments
(with F. Ma and J. Yan) (submitted)
pdf (21pp)
252.
On reconstruction of *n*-vertex graphs from the multiset
of *(n-l)*-vertex induced subgraphs (with A.V. Kostochka) (submitted)
pdf (15pp)
251.
3-regular graphs are 2-reconstructible
(with A.V. Kostochka, M. Nahvi, and D. Zirlin) (submitted)
pdf (13pp)
250.
On the bar visibility number of complete bipartite graphs
(with W. Cao and Y. Yang) (submitted)
pdf (16pp)
249.
Degree lists and connectedness are 3-reconstructible for graphs with at least
seven vertices (with A.V. Kostochka, M. Nahvi, and D. Zirlin)
(submitted)
pdf (12pp) slides
248.
Lower bounds for eccentricity-based parameters of graphs (with Y. Tang)
(submitted)
pdf (8pp)
247.
Upper bounds for bar visibility of subgraphs and *n*-vertex graphs
(with Y. Feng and Y. Yang)
(submitted)
pdf (6pp)
246.
The slow-coloring game on sparse graphs: *k*-degenerate, planar, and
outerplanar (with G. Gutowski, T. Krawczyk, K. Maziarz, M. Zajac, and X. Zhu)
(submitted)
pdf (15pp) slides
(short version of slides
245.
On-line size Ramsey number for monotone *k*-uniform ordered paths with
uniform looseness (with X. Pérez-Giménez and P. Pralat)
(submitted)
pdf (18pp) slides
244.
Cut-edges and regular factors in regular graphs of odd degree
(with A.V. Kostochka, A. Raspaud, B. Toft, and D. Zirlin) (submitted)
pdf (9pp)
slides (with #243)
243.
Ramsey numbers of interval 2-chromatic ordered graphs
(with D. Neidinger)
*Graphs and Combinatorics* 35 (2019), 1065-1076.
pdf (13pp)
242.
Largest 2-regular subgraphs of 3-regular graphs
(with I. Choi, R. Kim, A.V. Kostochka, and B. Park)
*Graphs and Combinatorics* 35 (2019), 805-813.
pdf (9pp)
slides (with #244)
241.
Strongly connectable digraphs and non-transitive dice
(with S. Joyce, A. Schaefer, and T. Zaslavsky)
*AKCE International Journal of Graph Theory and Combinatorics*
(published on-line April 1, 2019, DOI: 10.1016/j.akcej.2019.03.011).
pdf (8pp)
240.
Online sum-paintability: Slow-coloring of trees (with G.J. Puleo)
*Discrete Applied Mathematics* 262 (2019), 158-168.
.
pdf (12pp) slides
239.
Extremal problems on saturation for the family of *k*-edge-connected graphs
(with H. Lei, S. O, Y. Shi, and X. Zhu)
*Discrete Applied Mathematics* 260 (2019), 278-283.
pdf (9pp)
238.
The unit acquisition number of a graph
(with F. Johnson, A. Raleigh, and P.S. Wenger)
*Discrete Applied Mathematics* 258 (2019), 166-176.
pdf (21pp)
237.
Reconstruction from the deck of *k*-vertex induced subgraphs
(with H. Spinoza)
*J. Graph Theory* 90 (2019), 497-522.
pdf (28pp) slides
236.
Extensions of matroid covering and packing
(with G. Fan, H. Jiang, P. Li, D. Yang, and X. Zhu)
*European J. Combinatorics* 76 (2019), 117-122.
pdf (9pp)
235.
Antipodal coloring of hypercubes (with J.I. Wise)
*Discussiones Math. Graph Theory* 39 (2019), 271-284.
pdf (13pp)
234.
Randomly twisted hypercubes
(with A. Dudek, X. Pérez-Giménez, P. Pralat, H. Qi, and X. Zhu)
*Europ. J. Combinatorics* 70 (2018), 364-373.
pdf (11pp)
233.
Online sum-paintability: The slow-coloring game
(with T. Mahoney and G.J. Puleo)
*Discrete Mathematics* 341 (2018), 1084-1093.
pdf (17pp) slides,
older slides
232.
Decomposition of regular hypergraphs (with J.O. Choi)
*J. Combinatorics* 9 (2018), 21-33.
pdf (13pp)
231.
Fractional and circular separation dimension of graphs (with S.J. Loeb)
*Europ. J. Combinatorics* 69 (2018), 19-35.
pdf (23pp) slides
230.
The vulnerability of the diameter of enhanced hypercubes
(with M. Ma and J.-M. Xu)
*Theoretical Comp. Sci.* 694 (2017), 60-65.
pdf (9pp)
229.
The game saturation number of a graph (with J.M. Carraher, W.B. Kinnersley,
and B. Reiniger)
*J. Graph Theory* 85 (2017), 481-495.
pdf (14pp)
228.
An introduction to the discharging method via graph coloring
(with D.W. Cranston)
*Discrete Math.* 340 (2017), 766-793.
pdf (50pp),
earlier longer version (78pp)
227.
Bar visibility numbers for hypercubes and outerplanar digraphs
(with J.I. Wise)
*Graphs and Combinatorics* 33 (2017), 221-231.
pdf (10pp)
226.
Uniquely *t*-cycle saturated graphs (with P.S. Wenger)
*J. Graph Theory* 85 (2017), 94-106.
pdf (14pp)
225.
Circular chromatic Ramsey number
(with K.F. Jao, C. Tardif, and X. Zhu)
*J. Combinatorics* 8 (2017), 189-208.
pdf (14pp)
224.
Minimum degree and dominating paths
(with R.J. Faudree, R.J. Gould, and M.S. Jacobson)
*J. Graph Theory* 84 (2017), 202-213.
pdf (12pp) slides
223.
Decomposition of sparse graphs into forests: The Nine Dragon Tree Conjecture
for *k≤2* (with M. Chen, S.-J. Kim, A.V. Kostochka, and X. Zhu)
*J. Comb. Theory (B)* 122 (2017), 741-756.
pdf (15pp) slides
222.
Coloring, sparseness, and girth
(with N. Alon, A.V. Kostochka, B. Reiniger, and X. Zhu)
*Israel J. Mathematics* 214 (2016), 315-331.
pdf (13pp)
slides
221.
A new proof that 4-connected planar graphs are Hamiltonian-connected
(with X. Lu)
*Discussiones Math. Graph Theory* 36 (2016), 555-564.
pdf (9pp) slides
220.
To catch a falling robber (with W.B. Kinnersley and P. Pralat)
*Theoretical Comp. Sci.* 627 (2016), 107-111.
pdf (7pp)
219.
On *r*-dynamic coloring of graphs (with S. Jahanbekam, J. Kim, and S. O)
*Discrete Applied Mathematics* 206 (2016), 65-72.
pdf (13pp) slides
218.
Extremal problems for degree-based topological indices
(with Y. Tang and B. Zhou)
*Discrete Applied Mathematics* 203 (2016), 134-143.
pdf (16pp)
217.
Anti-Ramsey problems for *t* edge-disjoint rainbow spanning subgraphs:
cycles, matchings, or trees (with S. Jahanbekam)
*J. Graph Theory* 82 (2016), 75-89.
pdf (16pp)
216.
Cubic graphs with large ratio of independent domination number to domination
number (with S. O)
*Graphs and Combinatorics* 32 (2016), 773-776.
pdf (4pp)
215.
Rainbow spanning subgraphs of small diameter in edge-colored complete graphs
(with S. Jahanbekam)
*Graphs and Combinatorics* 32 (2016), 707-712.
pdf (6pp)
214.
Degree-associated reconstruction parameters of complete multipartite graphs and
their complements (with M. Ma, H. Shi, and H. Spinoza)
*Taiwanese J. Math.* 19 (2015), 1271-1284.
pdf (12pp)
213.
Ordered Ramsey theory and track representations of graphs
(with K.G. Milans and D. Stolee)
*J. Combinatorics* 6 (2015), 445-456.
pdf (9pp) slides
212.
Sharp bounds on the Chinese Postman Problem for 3-regular graphs and multigraphs
(with S. O)
*Discrete Applied Mathematics* 190/191 (2015), 163-168.
ps pdf (10pp)
slides
211.
The adversary degree-associated reconstruction number of double-brooms
(with M. Ma and H. Shi)
* J. Discrete Algorithms* 33 (2015), 150-159.
pdf (16pp) slides
210.
On *r*-dynamic coloring of grids (with R. Kang and T. Müller)
*Discrete Applied Math.* 186 (2015), 286-290.
pdf (8pp)
209.
Sharp lower bounds on the fractional matching number
(with R.E. Behrend and S. O)
*Discrete Applied Mathematics* 186 (2015), 272-274.
ps pdf (4pp)
208.
Sum-paintability of generalized theta-graphs
(with J. Carraher, T. Mahoney, and G.J. Puleo)
*Graphs and Combinatorics* 31 (2015), 1325-1334.
ps pdf (10pp)
207.
Beyond Ohba's Conjecture: A bound on the choice number of
*k*-chromatic graphs with *n* vertices (with J.A. Noel, H. Wu,
and X. Zhu)
*Europ. J. Combinatorics* 43 (2015), 295-305.
ps pdf (13pp)
slides
206.
The 1,2,3-Conjecture and 1,2-Conjecture for sparse graphs
(with D.W. Cranston and S. Jahanbekam)
*Discussiones Math. Graph Theory* 34 (2014), 769-799.
ps pdf (29pp)
slides
205.
Linear discrepancy of chain products and posets of bounded degree
(with J.O. Choi and K.G. Milans)
*Order* 31 (2014), 291-305.
ps pdf (14pp)
slides
204.
Permutation bigraphs and interval containments (with P. K. Saha, M. Basu,
and M. K. Sen)
*Discrete Applied Math.* 175 (2014), 71-78.
ps pdf (15pp)
203.
Three topics in online list coloring
(with J. Carraher, S. Loeb, T. Mahoney, G.J. Puleo, and M.-T. Tsai)
*J. Combinatorics* 5 (2014), 115-130.
ps pdf (13pp)
slides
202.
Cutwidth of triangular grids (with L. Lin and Y. Lin)
*Discrete Math.* 331 (2014), 89-92.
pdf (7pp)
201.
Equicovering subgraphs of graphs and hypergraphs (with I. Choi, J. Kim, and
A.N. Tebbe)
*Electronic J. Combinatorics* 21 (2014), no. 1, Paper #P1.62, 17pp.
ps pdf (15pp)
200.
Decomposition of cartesian products of regular graphs into isomorphic trees
(with K.F. Jao and A.V. Kostochka)
*J. Combinatorics* 4 (2013), 469-490.
ps pdf (18pp)
199.
New lower bounds on matching numbers of general and bipartite graphs
(with S. Jahanbekam)
*Congressus Numer.* 218 (2013), 57-59.
ps pdf (3pp)
198.
Extremal problems for game domination number (with W.B. Kinnersley and
R. Zamani)
*SIAM J. Discrete Math.* 27 (2013), 2090-2107.
ps pdf (22pp)
197.
Decomposition of sparse graphs into forests and a graph with bounded degree
(with S.-J. Kim, A.V. Kostochka, H. Wu, and X. Zhu)
*J. Graph Theory* 74 (2013), 369-391.
ps pdf (24pp)
slides
196.
Total acquisition in graphs (with T.D. LeSaulnier, N. Prince, P.S. Wenger,
and P. Worah)
*SIAM J. Discrete Math.* 27 (2013), 1800-1819.
ps pdf (24pp)
195.
Extremal graphs with a given number of perfect matchings
(with S.G. Hartke, D. Stolee, and M. Yancey)
*J. Graph Theory* 73 (2013), 449-468.
pdf (22pp)
194.
Bounds on the *k*-dimension of products of special posets (with M. Baym)
*Order* 30 (2013), 779-796.
ps pdf (21pp)
slides
193.
Visibility number of directed graphs (with M. Axenovich, A. Beveridge,
and J.P. Hutchinson)
*SIAM J. Discrete Math.* 27 (2013), 1429-1449.
ps pdf (24pp)
192.
Extensions to 2-factors in bipartite graphs (with J. Vandenbussche)
*Electronic J. Combinatorics* 20 (2013), no. 3, Paper #11, 10pp.
ps pdf
191.
Rainbow edge-coloring and rainbow domination (with T.D. LeSaulnier)
*Discrete Math.* 313 (2013), 2020-2025.
pdf (11pp) slides
190.
Game matching number of graphs (with D.W. Cranston, W.B. Kinnersley, and S. O)
*Discrete Applied Math.* 161 (2013), 1828-1836.
ps pdf (15pp)
slides
189.
Acquisition-extremal graphs (with T.D. LeSaulnier)
*Discrete Applied Math.* 161 (2013), 1521-1529.
ps pdf (15pp)
188.
Degree Ramsey numbers of cycles and blowups of trees
(with T. Jiang and K.G. Milans)
*European J. Combinatorics* 34 (2013), 414-423.
ps pdf (14pp)
187.
Chain-making games in grid-like posets (with D.W. Cranston, W.B. Kinnersley,
K.G. Milans, and G.J. Puleo)
ps pdf (14pp)
*J. Combinatorics* 3 (2012), 633-649.
186.
Revolutionaries and spies in trees and unicyclic graphs (with D.W. Cranston
and C.D. Smyth)
*J. Combinatorics* 3 (2012), 195-205.
ps pdf (9pp)
185.
Multicolor on-line degree Ramsey numbers of trees (with W.B. Kinnersley)
*J. Combinatorics* 3 (2012), 91-100.
ps pdf (8pp)
184.
Locating a robber on a graph via distance queries
(with J. Carraher, I. Choi, M. Delcourt, and L.H. Erickson)
*Theoretical Comp. Sci.* 463 (2012), 54-61.
ps pdf (14pp)
183.
Revolutionaries and Spies: Spy-good and spy-bad graphs (with J.V. Butterfield,
D.W. Cranston, G. Puleo, and R. Zamani)
*Theoretical Comp. Sci.* 463 (2012), 35-53.
ps pdf (34pp)
updated slides
182.
Cycle spectra of Hamiltonian graphs (with K. Milans, F. Pfender, D. Rautenbach,
and F. Regen)
*J. Comb. Theory (B)* 102 (2012), 869-874.
ps pdf (16pp)
181.
The *A*_{4}-structure of a graph (with M.D. Barrus)
*J. Graph Theory* 71 (2012), 159-175.
ps pdf (18pp)
180.
Spanning cycles through specified edges in bipartite graphs (with R. Zamani)
*J. Graph Theory* 71 (2012), 1-17.
pdf (16pp) slides
179.
Vertex degrees in outerplanar graphs (with K. F. Jao)
*J. Comb. Math. & Comb. Comput.* 82 (2012), 229-239.
ps pdf (10pp)
slides
178.
Packing of graphic *n*-tuples (with A.H. Busch, M.J. Ferrara, S.G. Hartke,
M.S. Jacobson, and H. Kaul)
*J. Graph Theory* 70 (2012), 29-39.
ps pdf (11pp)
177.
Overlap number of graphs (with D.W. Cranston, N. Korula, T.D. LeSaulnier,
K.G. Milans, C.J. Stocker, and J. Vandenbussche)
*J. Graph Theory* 70 (2012), 10-28.
ps pdf (21pp)
slides
176.
Degree Ramsey numbers of graphs (with W.B. Kinnersley and K.G. Milans)
*Combin., Probab., & Comput.* 21 (2012), 229-253.
ps pdf (27pp)
slides
175.
Length thresholds for graphic lists given fixed largest and smallest entries
and bounded gaps
(with M.D. Barrus, S.G Hartke, and K.F. Jao)
*Discrete Math.* 312 (2012), 1494-1501.
ps pdf (14pp)
174.
Uniquely *C*_{4}-saturated graphs (with J. Cooper, J. Lenz,
T.D. LeSaulnier, and P.S. Wenger)
*Graphs and Combinatorics* 28 (2012), 189-197.
ps pdf (9pp)
173.
Packing of Steiner trees and *S*-connectors in graphs (with H. Wu)
*J. Combin. Th. (B)* 102 (2012), 186-205.
ps pdf (28pp)
slides
172.
Connected domination number of a graph and its complement
(with H. Karami, A. Khodkar, and S.M. Sheikholeslami)
*Graphs and Combinatorics* 28 (2012), 123-131.
ps pdf (9pp)
171.
Longest cycles in *k*-connected graphs with given independence number
(with S. O and H. Wu)
*J. Combin. Th. (B)* 101 (2011), 480-485.
ps pdf (8pp)
slides
170.
A short proof of the Berge-Tutte Formula and the Gallai-Edmonds Structure
Theorem,
*European J. Combinatorics* 32 (2011), 674-676.
ps pdf (4pp)
169.
A new proof of 3-colorability of Eulerian triangulations
(with M.-T. Tsai)
*Ars Mathematicae Contemp.* 4 (2011), 73-77.
ps pdf (6pp)
168.
On-line Ramsey Theory for bounded-degree graphs (with J. Butterfield,
T. Grauman, W.B. Kinnersley, K.G. Milans, and C.J. Stocker)
*Electronic J. Combinatorics* 18 (2011), Paper P136, 22 pages.
ps pdf
slides
167.
Acyclic sets in *k*-majority tournaments
(with K.G. Milans and D.H. Schreiber)
*Electronic J. Combinatorics* 18 (2011), Paper P122, 8 pages.
ps pdf
166.
Equitable hypergraph orientations (with Y. Caro and R. Yuster)
*Electronic J. Combinatorics* 18 (2011), Paper P121, 6 pages.
ps pdf
slides
165.
Matching and edge-connectivity in regular graphs (with Suil O)
*European J. Combinatorics* 32 (2011), 324-329.
ps pdf (8pp)
164.
Degree-splittability of multigraphs and caterpillars
(with J.O. Choi and L. Ozkahya)
Proc. 41st SE Conf., *Congressus Numer.* 202 (2010), 137--147.
ps pdf (9pp)
163.
The edge-count criterion for degree lists
(with G. Isaak)
*Electronic J. Combinatorics* 17 (2010), Paper N36, 4 pages.
ps pdf (4pp)
162.
Degree-associated reconstruction number of graphs
(with M.D. Barrus)
*Discrete Math.* 310 (2010), 2600-2612.
ps pdf (21pp)
slides
161.
Forbidden subposets for fractional weak discrepancy at most *k*
(with J. O. Choi)
*European J. Combinatorics* 31 (2010), 1957-1963.
ps pdf (9pp)
160.
Rainbow matching in edge-colored graphs (with T.D. LeSaulnier, C.J. Stocker,
and P.S. Wenger)
*Electronic J. Combinatorics* 17 (2010), Paper N26, 5 pages.
ps pdf (5pp)
slides
159.
Decomposition of sparse graphs, with application to game coloring number
(with M. Montassier, A. Pêcher, A. Raspaud, and X. Zhu)
*Discrete Math.* 310 (2010), 1520-1523.
ps pdf (7pp)
slides
158.
A short proof of the Erdős-Gallai characterization of degree lists
(with A. Tripathi and S. Venugopalan)
*Discrete Math.* 310 (2010), 843-844.
ps pdf (3pp)
157.
Balloons, cut-edges, matchings, and total domination in regular graphs of
odd degree (with S. O)
*J. Graph Theory* 64 (2010), 116-131.
ps pdf (16pp)
156.
Oriented diameter of graphs with diameter 3 (with P.K. Kwok and Q. Liu)
*J. Combinatorial Theory (B)* 100 (2010), 265-274.
ps pdf (12pp)
155.
Extremal problems for Roman domination
(with E.W. Chambers, W.B. Kinnersley, and N. Prince)
*SIAM J. Discrete Math.* 23 (2009), 1575-1586.
ps pdf (15pp)
154.
Matching extendibility in hypercubes (with J. Vandenbussche)
*SIAM J. Discrete Math.* 23 (2009), 1539-1547.
ps pdf (11pp)
153.
The pagenumber of *k*-trees (with J. Vandenbussche and G. Yu)
*SIAM J. Discrete Math.* 23 (2009), 1455-1464.
ps pdf (9pp)
152.
Classes of 3-regular graphs that are (7,2)-edge-choosable (with D.W. Cranston)
*SIAM J. Discrete Math.* 23 (2009), 872-881.
ps pdf (12pp)
151.
Chromatic number for a generalization of Cartesian product graphs
(with D. Král')
*Electronic J. Combinatorics* 16 (2009), Paper #R71, 9 pages.
ps pdf (9pp)
150.
Proper path-factors and interval edge-coloring of (3,4)-biregular bigraphs
(with A.S. Asratian, C.J. Casselgren, and J. Vandenbussche)
*J. Graph Theory* 61 (2009), 88-97.
ps pdf (12pp)
slides
149.
Independence number of 2-factor-plus-triangles graphs (with J. Vandenbussche)
*Electronic J. Combinatorics* 16 (2009), Research article #R27, 14pp.
ps pdf (14pp)
slides
148.
Implications among linkage properties in graphs (with Q. Liu and G. Yu)
*J. Graph Theory* 60 (2009), 327-337.
ps pdf (11pp)
147.
Repetition number of graphs (with Y. Caro)
*Electronic J. Combinatorics* 16 (2009), Research article #R7, 14pp.
ps pdf (15pp)
slides
146.
Optimal strong parity edge-coloring of complete graphs (with D. Bunde,
K. Milans, and H. Wu)
*Combinatorica* 28 (2008), 625-632.
ps pdf (7pp)
slides
145.
Duality for semiantichains and unichain coverings in products of special posets
(with Q. Liu) *Order* 25 (2008), 359-367.
ps pdf (9pp)
slides
144.
Triangle-free planar graphs with minimum degree 3 have radius at least 3
(with S.-J. Kim)
*Discuss. Math. Graph Theory* 28 (2008), 563-566.
ps pdf (3pp)
143.
(5,2)-coloring of sparse graphs
(with O.V. Borodin, S.G. Hartke, A.O. Ivanova, and A.V. Kostochka)
*Siberian Electr. Math. Reports* 5 (2008), 417-426.
ps pdf (19pp)
142.
The hub number of a graph (with T. Grauman, S.G. Hartke, A. Jobson,
W.B. Kinnersley, L. Wiglesworth, P. Worah, and H. Wu)
*Info. Proc. Lett.* 108 (2008) 226-228.
ps pdf (6pp)
141.
Long local search for maximal bipartite subgraphs (with H. Kaul)
*SIAM J. Discrete Math.* 22 (2008), 1138-1144.
ps pdf (9pp)
140.
Tree-thickness and caterpillar-thickness under girth constraints
(with Q. Liu)
*Electronic J. Combin.* 15 (2008), Paper #R93.
ps pdf (16pp)
139.
Pebbling and optimal pebbling in graphs
(with D.P. Bunde, E.W. Chambers, D.W. Cranston, and K. Milans)
*J. Graph Theory* 57 (2008), 215-238.
ps pdf (26pp)
slides
138.
Circular chromatic index of cartesian products of graphs (with X. Zhu)
*J. Graph Theory* 57 (2008), 7-18.
ps pdf (10pp)
slides
137.
Parity and strong parity edge-colorings of graphs (with D. Bunde, K. Milans,
and H. Wu)
*Congressus Numer.* 187 (2007), 193-213.
ps pdf (20pp)
slides
136.
Some conjectures of Graffiti.pc on total domination
(with E. DeLaVina, Q. Liu, R. Pepper, and B. Waller)
*Congressus Numer.* 185 (2007), 81-95.
pdf (15pp)
135.
Bounds for cut-and-paste sorting of permutations
(with D.W. Cranston and I.H. Sudborough)
*Discrete Math.* 307 (2007), 2866-2870.
ps pdf (6pp)
134.
Improved bounds on families under *k*-wise set-intersection constraints
(with W. Cao and K. Hwang)
*Graphs and Combinatorics* 23 (2007), 381--386.
ps pdf (6pp)
133.
Extending precolorings to circular colorings (with M.O. Albertson)
*J. Comb. Theory (B)* 96 (2006), 472-481.
ps pdf (13pp)
132.
Chvátal's condition cannot hold for both a graph and its complement
(with A.V. Kostochka)
*Discuss. Math. Graph Th.* 26 (2006), 73-76.
ps pdf (3pp)
131.
Nordaus-Gaddum-type theorems for decompositions into many parts
(with Z. Füredi, A.V. Kostochka, R. Skrekovski, and M. Stiebitz)
*J. Graph Theory* 50 (2005), 273-292.
ps pdf (19pp)
130.
Hypergraph extension of the Alon-Tarsi list coloring theorem
(with R. Ramamurthi)
*Combinatorica* 25 (2005), 355-366.
ps pdf (13pp)
129.
Precoloring extensions of Brooks' Theorem
(with M.O. Albertson and A.V. Kostochka)
*SIAM J. Discr. Math.* 18 (2004), 542-553.
ps pdf (16pp)
128.
The visibility number of a graph
(with Y.-W. Chang, J.P. Hutchinson, M.S. Jacobson, and J. Lehel)
*SIAM J. Discr. Math.* 18 (2004), 462-471.
ps pdf (13pp)
127.
Homomorphisms from sparse graphs with large girth
(with O.V. Borodin, S.-J. Kim, and A.V. Kostochka)
*J. Comb. Theory (B)* 90 (2004), 147-159.
ps pdf (15pp)
126.
On pattern Ramsey numbers of graphs
(with R.E. Jamison)
*Graphs and Combinatorics* 20 (2004), 333-339.
ps pdf (7pp)
125.
Interval numbers of powers of block graphs
(with M. Chen and G.J. Chang)
*Discrete Math.* 275 (2004), 87-96.
ps pdf (14pp)
124.
Graphic and protographic lists of integers (with D. Fon-Der-Flaass)
*Electronic J. Comb* 11 (2004), \#1, Paper R4.
ps pdf (5pp)
123.
Maximum face-constrained colorings of plane graphs (with R. Ramamurthi).
*Discrete Mathematics* 274 (2004), 233-240, and *Electronic Notes in
Discrete Math.* Volume 11 (July 2002 online publication).
ps pdf (8pp)
122.
Edge-colorings of complete graphs that avoid polychromatic trees
(with T. Jiang).
*Discrete Mathematics* 274 (2004), 137-145, and *Electronic Notes in
Discrete Math.* Volume 11 (July 2002 online publication).
ps pdf (10pp)
121.
Probabilistic methods for decomposition dimension of graphs
(with M. Hagita and A. Kündgen)
*Graphs and Combinatorics* 19 (2003), 493--503.
ps pdf (10pp)
120.
A list analogue of equitable coloring
(with A.V. Kostochka and M.J. Pelsmajer)
*J. Graph Theory* 44 (2003), 166-177.
ps pdf (11pp)
119.
On the Erdös-Simonovits-Sós Conjecture about the anti-Ramsey number
of a cycle (with T. Jiang)
*Combinatorics, Probability, and Computing* 12 (2003), 585-598.
ps pdf (14pp)
118.
Isometric cycles and bridged graphs
(with T. Jiang and S.-J. Kim)
*J. Graph Theory* 43 (2003), 161-170.
ps pdf (11pp)
117.
On the existence of Hamiltonian paths in the cover graph of *M(n)*
(with C.D. Savage and I. Shields)
*Discrete Mathematics* 262 (2003), 241-252.
ps pdf (13pp)
116.
Restricted edge-colorings of bicliques (with D. Mubayi)
*Discrete Mathematics* 257 (2002), 513-529.
ps pdf (16pp)
115.
The chromatic spectrum of mixed hypergraphs
(with T. Jiang, D. Mubayi, Zs. Tuza, and V. Voloshin)
*Graphs and Combinatorics* 18(2002), 309-318.
ps pdf (11pp)
114.
A Fibonacci tiling of the plane (with C. Huegy).
*Discrete Mathematics* 249(2002), 111-116.
ps pdf (4pp)
113.
A proof of the two-path conjecture
(with H. Fleischner, R. Molina, and K.W. Smith)
*Electronic J. Comb* 9(2002), \#1, Note 4, 4pp.
ps pdf (2pp)
112.
Cevian dissections of triangles (with V.J. Matsko and J.E. Wetzel)
*Journal of Geometry* 72(2001), 115-127.
ps pdf (12pp)
111.
Structural diagnosis of wiring networks: finding connected components
of an unknown subgraph (with W. Shi, elaboration of #83)
*SIAM J. Discr. Math.* 14(2001), 510-523.
110.
Realizing degree imbalances in directed graphs (with D. Mubayi and T.G. Will).
*Discrete Mathematics* 239(2001), 147-153.
ps pdf (4pp)
109.
Ramsey theory and bandwidth of graphs
(with Z. Füredi)
*Graphs and Combinatorics* 17(2001), 463-471.
ps pdf (8pp)
108.
On the number of vertices with specified eccentricity (with D. Mubayi)
*Graphs and Combinatorics* 16(2000), 441-452.
ps pdf (9pp)
107.
Edge-bandwidth of theta graphs
(with D. Eichhorn, D. Mubayi, and K. O'Bryant)
*J. Graph Theory* 35(2000), 89-98.
ps pdf (9pp)
106.
Multiple vertex covering with specified induced subgraphs
(with Z. Füredi and D. Mubayi)
*J. Graph Theory* 34(2000), 180-190.
ps pdf (9pp)
105.
Connected domination and spanning trees with many leaves
(with Y. Caro and R. Yuster)
*SIAM J. Discrete Math.* 13(2000), 202-211.
ps pdf (12pp)
104.
Perfection thickness of graphs
(with H. Asari, T. Jiang, and A. Kündgen)
*Discrete Math.* 215(2000), 263-264.
ps pdf (1pp)
103.
Generalized chromatic number and generalized girth (with B. Bollobás).
*Discrete Math.* 213(2000), 29-34.
ps pdf (6pp)
102.
Partially Ordered Sets (with G. Brightwell).
Chapter 11 in *Handbook of Discrete and Combinatorial Mathematics*
(K.H. Rosen, editor-in-chief), (CRC Press, 2000), 717-752.
(not available on-line)
101.
Every outerplanar graph is a union of two interval graphs
(with A.V. Kostochka). (30th SE Conf. Comb. Graph Th. Comp.)
*Congr. Num.* 139(1999), 354-358.
ps pdf (3pp)
100.
Edge-bandwidth of graphs (with T. Jiang, D. Mubayi, and A. Shastri).
*SIAM J. Discrete Math.* 12(1999), 307-316.
ps pdf (13pp)
99.
Coloring of trees with minimum sum of colors
(with T. Jiang). *J. Graph Theory* 32(1999), 354-358
ps pdf (5pp)
98.
Intersection representation of digraphs in trees with few leaves
(with I.-J. Lin and M.K. Sen). *J. Graph Theory* 32(1999), 340-353.
ps (pdf unavailable) (12pp)
97.
A short proof that "proper = unit"
(with K.P. Bogart). *Discrete Math.* 201(1999), 21-23.
ps pdf (2pp)
96.
Diagnosis of wiring networks: An optimal randomized algorithm for finding
connected components of unknown graphs (with W. Shi) (elaboration of #75)
*SIAM J. Computing* 28(1999), 1541-1551.
ps pdf (12pp)
95.
Rectangle number for hypercubes and complete multipartite graphs
(with Y.-W. Chang). (29th SE Conf. Comb. Graph Th. Comp.) *Congr. Num.*
132(1998), 19-28.
ps pdf (9pp)
94.
The leafage of a chordal graph (with I.-J. Lin and T.A. McKee).
*Discuss. Math. Graph Th.* 18(1998), 23-48.
ps pdf (19pp)
93.
Largest regular graphs with equal connectivity and independence number
(with P.K. Kwok). *Proc. 8th Intl. Graph Theory Conf. (Kalamazoo 1996)*
(Wiley, 1998), 587-589.
ps pdf (3pp)
92.
Line digraphs and coreflexive vertex sets (with X. Liu).
*Discr. Math.* 188(1998), 269-277.
ps pdf (8pp)
91.
Star-factors of tournaments (with G. Chen and X. Lu).
*J. Graph Theory* 28(1998), 141-145.
ps pdf (5pp)
90.
Bandwidth and density for block graphs
(with L.T.Q. Hung, M.M. Syslo and M.L. Weaver).
*Discrete Math.* 189(1998), 163-176.
ps pdf (14pp)
89.
Interval number and boxicity of digraphs (with Y.-W. Chang).
*Proc. 8th Intl. Graph Theory Conf. (Kalamazoo 1996)* (Wiley, 1998),
171-179. ps pdf (9pp)
88.
The bricklayer problem and the strong cycle lemma (with H. Snevily).
*Amer. Math. Monthly* 105(1998), 131-143.
ps pdf (15pp)
87.
Short proofs for interval digraphs.
*Discrete Math.* 178(1998), 287-292.
ps pdf (6pp)
86.
Classes of interval digraphs and 0,1-matrices (with I.-J. Lin and M.K. Sen).
Proc. 28th SE Conf., *Congressus Numer.* 125(1997), 201-209.
ps pdf (9pp)
85.
The number of dependent edges in an acyclic orientation
(with D.C. Fisher, K. Fraughnaugh, and L. Langley).
*J. Combinatorial Theory (B)* 71(1997), 73-78.
ps pdf (5pp)
84.
Optimal structural diagnosis of wiring networks
(with W. Shi).
*Proc. 27th Intl. Symp. Fault-Tolerant Computing (FTCS-27) - Seattle 1997*
(IEEE Press, 1997), 162-191.
ps pdf (25pp)
83.
Total interval number for graphs with bounded degree
(with A. Kostochka). *J. Graph Theory* 25(1997), 79-94.
ps pdf (7pp)
82.
The superregular graphs. *J. Graph Theory* 23(1996), 289-295.
ps pdf (8pp)
81.
The total interval number of a graph II: Trees and complexity
(with T.M. Kratzke). *SIAM J. Discr. Math.* 9(1996), 339-348.
ps pdf (12pp)
80.
Large 2*P*_{3}-free graphs with bounded degree (with M.-S. Chung).
*Discrete Math.* 150(1996), 69-79.
ps pdf (11pp)
79.
The path spectrum of a graph (with M.S. Jacobson, A.E. Kézdy,
E. Kubicka, G. Kubicki, J. Lehel, and C. Wang).
Proc. 26th SE Conf., *Congressus Numer.* 112(1995), 49-64.
(postscript unavailable)
78.
Multitrack interval number (with A. Gyárfás).
Proc. 26th SE Conf., *Congressus Numer.* 109(1995), 109-116.
ps pdf (8pp)
77.
Representing digraphs using intervals or circular arcs
(with M.K. Sen and B.K. Sanyal). *Discrete Math.* 147(1995), 235-245.
ps pdf (11pp)
76.
Optimal algorithms for finding connected components of an unknown graph (with
W. Shi). In *Computing and Combinatorics: 1st Annual International
Conference COCOON '95 (Xi'an, China)*. (eds. D.-Z. Du and M. Li)
*Lecture Notes in Computer Science* 959(1995), 131-140.
ps pdf (12pp)
75.
Interval number of special posets and random posets (with T. Madej).
*Discrete Math.* 144(1995), 67-74.
ps pdf (8pp)
74.
Parsimonious 2-multigraphs (with T.G. Will).
*Graph theory, Combinatorics, and Algorithms (Proc. 7th Intl. Conf. Graph
Th. - Kalamazoo 1992*) (Y. Alavi and A. Schwenk, eds.)
(Wiley 1995), 1249-1258.
ps pdf (10pp)
73.
Interval digraphs that are indifference digraphs (with I.-J. Lin).
*Graph theory, Combinatorics, and Algorithms*
(*Proc. 7th Intl. Conf. Graph Th. - Kalamazoo 1992*) (Y. Alavi and
A. Schwenk, eds.) (Wiley 1995), 751-765.
ps pdf (15pp)
72.
Maximum bandwidth under edge addition
(with J.-F. Wang and B. Yao). *J. Graph Theory* 20(1995), 87-90.
ps pdf (4pp)
### Earlier papers

For the earlier papers, I had just a few old files that would still run under
groff. Mostly what is here are scans or downloads of the published papers that
I believe are now in Open Archive, since it has been more than 20 years since
they were published.

71.
The 2-intersection number of paths and bounded-degree trees
(with M.S. Jacobson and A.E. Kézdy).
*J. Graph Theory* 19 (1995), 461-469.
pdf
70.
Gray code enumeration of families of integer partitions
(with D. Rasmussen and C.D. Savage)
*J. Combinatorial Theory A* 70 (1995), 201-229.
pdf
69.
Acyclic orientations of complete bipartite graphs.
*Discrete Math.* 138 (1995), 393-396.
pdf
68.
A graph-theoretic game and its application to the k-server problem
(with N. Alon, R.M. Karp, and D. Peleg). *Proc. Workshop on On-line Algs.,
DIMACS Series Disc. Math. Theor. Comp. Sci.* 7 (1992), 1-9 (extended
abstract), and *SIAM J. Comp.* 24 (1995), 78-100 (complete paper).
pdf
67.
The p-intersection number of a complete bipartite graph and orthogonal
double coverings of a clique (with M.-S. Chung).
*Combinatorica* 14 (1994), 453-461.
pdf
66.
Size, chromatic number, and connectivity, (with J. Bhasker and T. Samad).
*Graphs and Combinatorics* 10 (1994), 209-213.
pdf
65.
Relaxed chromatic numbers of graphs (with M.L. Weaver).
*Graphs and Combinatorics* 10 (1994), 75-93.
pdf
64.
Covering a poset by interval orders.
*J. Combinatorial Theory (A)* 66 (1994), 169-171.
pdf
63.
Gray code results for acyclic orientations
(with C.D. Savage and M.B. Squire)
In *Proc. 24th SE Intl. Conf. Graph Th. Comb. Comput.*,
*Congressus Numerantium* 96 (1993), 185-204.
ps pdf (21pp)
62.
The total interval number of a graph I: Fundamental classes
(with T.M. Kratzke).
*Discrete Math.* 118 (1993), 145-156.
pdf
61.
Subtree and substar intersection numbers
(with Y.-W. Chang, M.S. Jacobson, and C.L. Monma).
*Discrete Appl. Math.* 44 (1993), 205-220.
pdf
60.
Generating linear extensions by adjacent transpositions.
*J. Combinatorial Theory (B)* 58 (1993), 58-64.
pdf
59.
Clique coverings of the edges of the random graph
(with B. Bollobás, P. Erdös and J. Spencer).
*Combinatorica* 13 (1993), 1-5.
pdf
58.
Vertex degrees in planar graphs (with T.G. Will). In *Planar Graphs*,
(W.T. Trotter, ed.) *DIMACS Series Discrete Math. Theor. Comp. Sci.*
9 (1993), 139-149.
pdf scan
57.
Large *P*_{4}-free graphs with bounded degree (with M.-S. Chung).
*J. Graph Theory* 17 (1993), 109-116.
pdf
56.
A characterization of influence graphs of a prescribed graph
(with G. Chen, R.J. Gould, M.S. Jacobson, and R. Schelp).
*Vishwa Intl. J. Graph Theory* 1 (1992), 77-81.
preprint
55.
Large regular graphs with no induced *2K*_{2}
(with M. Paoli, G.W. Peck, and W.T. Trotter).
*Graphs and Combinatorics* 8 (1992), 165-197.
pdf
54.
Representing digraphs by arcs of a circle (with M. Sen and S. Das). In
*Combinatorial mathematics and applications (Calcutta, 1988)*, special
issue of *Sankhya Ser. A* 54 (1992), 421-427.
53.
The maximum number of winning 2-sets.
*Discrete Appl. Math.* 34 (1991), 279-284.
pdf
52.
The interval inclusion number of a partially ordered set (with T. Madej).
*Discrete Math.* 88 (1991), 259-277.
pdf
51.
Spanning trees with many leaves (with D.J. Kleitman).
*SIAM J. Discrete Math.* 4 (1991), 99-106.
pdf
50.
Wide posets with fixed height and cutset number
(with A.E. Kézdy and M. Markert).
*Order* 7 (1990), 115-132.
pdf
49.
Adding up to powers (with E.A. Bender and F. Kochman).
*Amer. Math. Monthly* 97 (1990), 139-143.
pdf
48.
Tetrahedrizing point sets in three dimensions (with H. Edelsbrunner
and F.P. Preparata). In
*Symbolic and Algebraic Computation (Proc. Intl. Symp. Symb. Alg. Comp., Rome
1988).* *Lect. Notes in Comp. Sci.* 358 (Springer-Verlag, 1988),
315-331.
Also *J. Symbolic Computation* 10 (1990), 335-347.
pdf
47.
An entropy inequality for the bi-multivariate hypergeometric distribution
(with F. Kochman and A. Murray).
*Proc. Amer. Math. Soc.* 107 (1989), 479-485.
pdf
46.
Circular-arc digraphs: A characterization (with M.K. Sen and S. Das).
*J. Graph Theory* 13 (1989), 581-592.
pdf
45.
Interval digraphs: An analogue of interval graphs
(with M.K. Sen, S. Das, and A.B. Roy).
*J. Graph Theory* 13 (1989), 189-202.
pdf
44.
Highly asymmetric graphs.
*Amer. Math. Monthly* 96 (1989), 60-62.
pdf
43.
A short proof of the degree bound for interval number.
*Discrete Math.* 73 (1989), 309-310.
pdf
42.
Interval representations of cliques and of subset intersection graphs
(with E.R. Scheinerman). In *Combinatorial Mathematics* (Proc. 3rd Intl.
Conf. Combinatorics, New York 1985, G.S. Bloom et al, eds.)
* Ann. N.Y. Acad. Sci.* 555 (1989), 363-367.
pdf scan
41.
A length-width inequality for partially ordered sets with two-element
cutsets (with J. Ginsburg and B. Sands).
*J. Combinatorial Theory (B)* 46 (1989), 232-239.
pdf
40.
Pagenumber of complete bipartite graphs (with D.J. Muder and M.L. Weaver).
*J. Graph Theory* 12 (1988), 469-489.
pdf
39.
Eigensharp graphs: Decomposition into complete bipartite subgraphs
(with T. Kratzke and B. Reznick).
*Trans. Amer. Math. Soc.* 308 (1988), 637-651.
pdf
38.
On the construction of communication networks satisfying bounded
fan-in of service ports (with P. Banerjee).
*IEEE Transactions on Computers* 37 (1988), 1148-1151.
pdf
37.
The addition game: An abstraction of a communication problem
(with D. Miklös, M.J. Newman, and A. Seress).
*Discrete Math.* 68 (1988), 165-172.
pdf
36.
Bandwidth of the integer simplex.
*Amer. Math. Monthly* 94 (1987), 997-1000.
pdf
35.
Regressions and monotone chains II: the poset of intervals of integers
(with N. Alon and W.T. Trotter).
*Order* 4 (1987), 155-164.
pdf
34.
An improved edge bound on the interval number of a graph
(with J. Spinrad and G. Vijayan).
*J. Graph Theory* 11 (1987), 447-449.
pdf
33.
Sorting by insertion of leading elements (with M. Aigner).
*J. Combinatorial Theory (B)* 45 (1987), 306-309.
pdf
32.
Two easy duality theorems on direct products of posets (with L.E. Trotter).
*Discrete Appl. Math.* 16 (1987), 283-286.
pdf
31.
Poset boxicity of graphs (with W.T. Trotter).
* Discrete Math.* 64 (1987), 105-107.
pdf
30. Unichain coverings in products of posets with nested saturation
property.
*Discrete Math.* 63 (1987), 297-303.
pdf
29. Lower bounds on common knowledge in distributed algorithms, with
applications (with E. Gafni, M. C. Loui, P. Tiwari, and S. Zaks).
In *Distributed Algorithms on Graphs (Proc. 1st Intl.
Works. Distr. Alg., Ottawa 1985).* Carleton Univ. Press (1986), 49-67.
preprint
28. The Borsuk-Ulam theorem and bisection of necklaces (with N. Alon).
*Proceedings Amer. Math. Soc.* 98 (1986), 623-628.
pdf
27. Election in a complete network with a sense of direction
(with M.C. Loui and T.A. Matsushita).
*Information Processing Letters* 22 (1986), 185-187.
pdf
(corrigendum *IPL* 28 (1988), 327).
26. ``Polyunsaturated posets:'' the Greene-Kleitman theorem is best
possible. *J. Combinatorial Theory (A)* 41 (1986), 105-116.
pdf
25. Partial matchings in degree-restricted bipartite graphs
(with P. Banerjee). In *Proc. 16th S.E. Conf. Comb., Graph Th., and
Computing (Boca Raton, 1985).*
*Congressus Numerantium* 49 (1985), 259-266.
pdf scan
24. Decomposition of product graphs into complete bipartite subgraphs
(with B. Reznick and P. Tiwari).
*Discrete Math.* 57 (1985), 189-193.
pdf
23. Compatible matching in bipartite graphs (with C.P. Kruskal).
In *Graph Theory with Applications to Algorithms and Computer Science
(Proc. 5th Intl. Conf. Graph Th., Kalamazoo 1984, Alavi et al, eds.).*
Wiley (1985), 489-500.
preprint
22. Networks and chain coverings in partial orders and their products.
(with C.A. Tovey).
*Order* 2 (1985), 49-60.
pdf
21.
A note on the interval number of a graph
(with P. Erdős).
* Discrete Math.* 55(1985), 129-133.
pdf
20.
Parameters in partial orders and graphs: Packing, covering, and representation.
In *Graphs and Order (Proc. NATO ASI, Banff 1984, I. Rival, ed.).*
D. Reidel (1985), 267-350.
preprint
19. Bisection of circle colorings (with C.H. Goldberg).
*SIAM J. Algeb. Disc. Meth.* 6 (1985), 93-106.
pdf
18.
Recognizing graphs with fixed interval number is NP-complete
(with D.B. Shmoys).
* Discrete Appl. Math.* 8(1984), 295-305.
pdf
17.
The number of complete subgraphs in graphs with non-majorizable degree
sequences. In *Progress in Graph Theory (Proc. Silver Jubilee Conf., Waterloo
1982, J.A. Bondy and U.S.R. Murty, eds.)*.
Academic Press Canada (1984), 509-521.
pdf
16.
Regressions and monotone chains: a Ramsey-type extremal problem in partial
orders (with W.T. Trotter, G.W. Peck, and P. Shor).
*Combinatorica* 4 (1984), 117-119.
pdf
15.
The interval number of a complete multipartite graph
(with L.B. Hopkins and W.T. Trotter).
* Discrete Appl. Math.* 8(1984), 163-187.
pdf
14.
Some remarks on normalized matching (with L.H. Harper and D.E. Daykin).
* J. Combinatorial Theory (A)* 35 (1983), 301-308.
pdf
13.
The interval number of a planar graph -- three intervals suffice
(with E.R. Scheinerman).
*J. Combinatorial Theory B* 35(1983), 224-239.
pdf
(Note: the proof in this paper has a gap.)
12.
Gossiping without duplicate transmissions.
*SIAM J. Algebraic & Discrete Meth.* 3(1982), 418-419.
pdf
11.
A class of solutions to the gossip problem, III.
*Discrete Math.* 40(1982), 285-310.
pdf
10.
A class of solutions to the gossip problem, II.
*Discrete Math.* 40(1982), 87-113.
pdf
9.
A class of solutions to the gossip problem, I.
*Discrete Math.* 39(1982), 307-326.
pdf
8.
Extremal problems in partially ordered sets.
In *Ordered Sets (Proc. NATO ASI,
Banff 1981, I. Rival, ed.)*. D. Reidel (1982), 473-521.
pdf
7.
Semiantichains and unichains in direct products of partial orders (with C.A.
Tovey). *SIAM J. Algeb. Disc. Meth.* 2 (1981), 295-305.
pdf
6.
A symmetric chain decomposition of *L(4,n)*.
*European J. Combinatorics* 1 (1980), 379-383.
pdf
5.
Extremal values of the interval number of a graph (with J.R. Griggs).
*SIAM J. Algeb. Disc. Meth.* 1(1980), 1-7.
pdf
4.
Maximum antichains of rectangular arrays (as part of G.W. Peck).
*J. Combinatorial Theory A* 27 (1979), 397-400.
pdf
3.
Skew chain orders and sets of rectangles (with D.J. Kleitman).
*Discrete Math.* 27 (1979), 99-102.
pdf
2.
The number of meets between two subsets of a lattice (with D.E. Daykin and D.J.
Kleitman).
*J. Combinatorial Theory (A)* 26 (1979), 135-156.
pdf
1.
Pairs of adjacent Hamiltonian circuits with small intersection.
*Studies in Applied Math.* 59 (1978), 245-248.
pdf scan
### Slides for older one-hour or expository lectures

"Some Things I Don't Know" slides:
Joint Math Meetings (special session), Baltimore (Jan 2014)
"Acquisition Parameters of Graphs" slides:
Graph Theory Workshop, Jinhua, China (Dec 2013);
23rd Cumberland Conf, U. Mississippi (May 2010);
23rd Midwest Conference on Combinatorics and Combinatorial Computing (MCCCC 23),
Rochester, NY (Oct 2009)
"Topics in Matching: The Chinese Postman and Game Matching Problems",
slides:
Zhengzhou University, Zhengzhou, China (Apr 2013)
"On-line Choice Number or Paintability of Graphs"
slides: 44th SE Intl Conf on Combinatorics,
Graph Theory, and Computing, Boca Raton, FL (Mar 2013)
"The Game of Revolutionaries and Spies" slides:
GRASTA 2012, Banff (Oct 2012); Zhoushan Island, China (Dec 2012)
"Strengthening choosability results to paintability",
at Cycles & Colourings 2012, High Tatras, Slovakia (Sep 2012)
slides
"Two results on long cycles", at Cycles & Colourings 2010, Tatranska Strba,
Slovakia (Sep 2010) Fouquet-Jolivet slides,
*F*-Hamiltonian bigraph slides
"Decomposition of sparse graphs", at International Conference on Recent
Trends in Graph Theory and Combinatorics, Cochin, India (Aug 2010)
slides
"Degree Ramsey and On-Line Degree Ramsey Numbers",
at Workshop in Graph Theory, Tiruchirappalli, India (Aug 2010)
slides. [updated from 2009 Workshop on
Graph Theory (Kaohsiung), Graph Theory 2008 (honoring Carsten Thomassen's 60th
birthday), and MIGHTY XLVII.]
"Old and New Results on Degree Lists of Graphs",
at CoNE Revisited (in memory of Michael O. Albertson), Smith College,
Northampton, MA (Mar 2010)
slides
"Three Variations on Edge-Coloring", at 12th CID Meeting, Karpacz,
Poland (Sep 2007)
slides
"Coloring and List Coloring in Graphs and Hypergraphs", for Math 499,
slides
"Circular Coloring", at Graph Theory with Altitude (May 2005, honoring
Joan Hutchinson's 60th Birthday)
scanned slides (my last handwritten talk)