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Macaulay2 web site
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)