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MultiprojectiveVarieties :: degreeSequence

degreeSequence -- the (multi)-degree sequence of a (multi)-rational map

Synopsis

Description

i1 : Phi = inverse first graph last graph rationalMap PP_(ZZ/33331)^(1,3);

o1 : MultirationalMap (birational map from threefold in PP^3 x PP^2 to threefold in PP^3 x PP^2 x PP^2)
i2 : degreeSequence Phi

o2 = {[(1, 0)], [(0, 1), (2, 0)], [(0, 1), (2, 0)]}

o2 : List

References

Cremona transformations and some related algebras, by A. Simis.

See also

Ways to use degreeSequence :

For the programmer

The object degreeSequence is a method function.