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ReturnSingletons

Description

This is an optional argument for the function maximalNonstableSubquivers, which allows the user to consider single vertices as subquivers. For most computations, these subquivers are trivial, and are ignored.

i1 : maximalNonstableSubquivers(bipartiteQuiver (2, 3), ReturnSingletons => true)

o1 = HashTable{NonSingletons => {{0, 1, 2, 3}, {0, 1, 2, 4}, {0, 1, 2, 5}, {0, 3, 4, 5}, {1, 3, 4, 5}, {2, 3, 4, 5}}}
               Singletons => {{0}, {1}}

o1 : HashTable
 
i2 : maximalNonstableSubquivers(bipartiteQuiver (2, 3), ReturnSingletons => false)

o2 = HashTable{NonSingletons => {{0, 1, 2, 3}, {0, 1, 2, 4}, {0, 1, 2, 5}, {0, 3, 4, 5}, {1, 3, 4, 5}, {2, 3, 4, 5}}}

o2 : HashTable

See also

Functions with optional argument named ReturnSingletons:

  • maximalNonstableSubquivers(...,ReturnSingletons=>...) -- see maximalNonstableSubquivers -- return the maximal subquivers that are semistable
  • maximalUnstableSubquivers(...,ReturnSingletons=>...) -- see maximalUnstableSubquivers -- return the maximal subquivers that are unstable

For the programmer

The object ReturnSingletons is a symbol.

The source of this document is in /build/macaulay2-88fgJW/macaulay2-1.25.11+ds/M2/Macaulay2/packages/ThinSincereQuivers.m2:3279:0.