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euler(CoherentSheaf) -- Euler characteristic of coherent sheaf
Function:
euler
Usage:
euler F
Inputs:
F
,
a
coherent sheaf
Outputs:
an
integer
, the Euler characteristic of the cohomology of the sheaf
Description
The command returns
chi(F)
the Euler characteristic of the sheaf
F
i.e. the alternated sum of the dimensions of its cohomology groups
See also
eulers(CoherentSheaf)
genus
Ways to use this method:
euler(CoherentSheaf)
-- Euler characteristic of coherent sheaf
The source of this document is in
Varieties/euler-doc.m2:54:0
.