https://macaulay2.com/doc/Macaulay2/share/doc/Macaulay2/SimplicialComplexes/html/_dunce__Hat__Complex_lp__Polynomial__Ring_rp.html
dunceHatComplex(PolynomialRing) -- make a realization of the dunce hat with 8 vertices
of thedunce hatmakerealizationvertices