next | previous | forward | backward | up | top | index | toc | Macaulay2 website

ChainComplexOperations :: eulerCharacteristic

eulerCharacteristic -- sum of the lengths of the even degree homology minus the odd degree homology groups

Synopsis

Usage:

m = eulerCharacteristic F
Inputs:
- F, a chain complex,
Outputs:
- m, an integer,

Caveat

Returns an error if any homology has infinite length

Ways to use `eulerCharacteristic` :

"eulerCharacteristic(ChainComplex)"

For the programmer

The object eulerCharacteristic is a method function.