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character -- compute characters of finite group action


Use this method to compute the Betti characters of a finite group action on a minimal free resolution or the characters of a finite group action on the components of a graded module. See the specific use cases for more details.

All characters are bigraded by homological degree and internal degree (inherited from the complex or module they are computed from). Modules are considered to be concentrated in homological degree zero.

Characters may also be constructed by hand using character(PolynomialRing,ZZ,HashTable).

Ways to use character :

For the programmer

The object character is a method function.