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Macaulay2 web site
AnalyzeSheafOnP1
::
doubleDualMap
doubleDualMap -- map from a module to its double dual
Synopsis
Usage:
e = doubleDualMap M
Inputs:
M
,
a
module
Outputs:
e
,
a
matrix
, map from M to double dual
Description
provide the natural map M --> Hom(Hom(M,S),S), where S = ring M.
Ways to use
doubleDualMap
:
doubleDualMap(Module)