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Macaulay2 website
SpecialFanoFourfolds
::
ring(SpecialCubicFourfold)
ring(SpecialCubicFourfold) -- ambient polynomial ring of the fourfold
Synopsis
Function:
ring
Usage:
ring X
Inputs:
X
,
a
special cubic fourfold
, or
a
special Gushel-Mukai fourfold
Outputs:
a
ring
, the common ambient polynomial ring of the fourfold and of the surface contained in it.