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surfaces -- get the special surfaces contained in the cubic fourfold

Usage:

surfaces X
Inputs:
- X, a doubly special cubic fourfold
Outputs:
- the two surfaces contained in the fourfold X

Description

i1 : X = specialFourfold "DSCF-6";

o1 : ProjectiveVariety, cubic fourfold in C_8 containing a surface of degree 4 and sectional genus 0 and a plane

i2 : surfaces X

o2 = (surface in PP^5 cut out by 6 hypersurfaces of degree 2, surface in PP^5
     ------------------------------------------------------------------------
     cut out by 3 hypersurfaces of degree 1)

o2 : Sequence

See also

surface(HodgeSpecialFourfold) -- get the special surface contained in the fourfold

Ways to use surfaces:

surfaces(DoublySpecialCubicFourfold)

For the programmer

The object surfaces is a method function.

The source of this document is in /build/reproducible-path/macaulay2-1.26.05+ds/M2/Macaulay2/packages/SpecialFanoFourfolds/docs.m2:566:0.