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ThinSincereQuivers :: primitiveArrows

primitiveArrows -- list the primitive arrows in a quiver

Synopsis

Usage:

primitiveArrows Q
Inputs:
- Q, an instance of the type ToricQuiver,
Outputs:
- L, a list, of arrow indices corresponding to the primitive arrows in Q

Description

an arrow a=(v0,v1) in Q.Q1 is primitive if there exists an oriented path from v0 to v1 in Q.Q1.

i1 : primitiveArrows toricQuiver {{0,1},{0,2},{0,3},{1,2},{1,3},{2,3}}

o1 = {0, 3, 5}

o1 : List

For the programmer

The object primitiveArrows is a function closure.