Macaulay2 » Documentation
Packages » SRdeformations :: facets
next | previous | forward | backward | up | index | toc

facets -- The maximal faces of a complex.

Description

The maximal faces of C arranged in a list of lists with ascending dimension of the facets.

i1 : R=QQ[x_0..x_5]

o1 = R

o1 : PolynomialRing
 
i2 : C=fullCyclicPolytope(3,R)

o2 = 3: x x x x x x  
         0 1 2 3 4 5

o2 : complex of dim 3 embedded in dim 3 (printing facets)
     equidimensional, non-simplicial, F-vector {1, 6, 12, 8, 1}, Euler = 0
 
i3 : facets C

o3 = {{}, {}, {}, {}, {x x x x x x }}
                        0 1 2 3 4 5

o3 : List
 
i4 : dC=boundaryOfPolytope(C);
 
i5 : facets dC

o5 = {{}, {}, {}, {x x x , x x x , x x x , x x x , x x x , x x x , x x x ,
                    0 1 2   0 2 3   0 3 4   0 1 5   1 2 5   2 3 5   0 4 5 
     ------------------------------------------------------------------------
     x x x }, {}}
      3 4 5

o5 : List

See also

Ways to use facets:

  • facets(Complex)
  • facets(List)

For the programmer

The object facets is a method function.

The source of this document is in /__w/M2/M2/macaulay2-1.26.05+ds/M2/Macaulay2/packages/SRdeformations.m2:6284:0.