FineGrading

Description

The default is FineGrading => false. If the option FineGrading=>true is given, then the ideal returned has the natural ZZ⁴ grading, where x_i has degree {1,0,i,a-i} and y_i has degree {0,1,i,b-i}. (Note that after the call carpet(a1,a2) we have a = min(a1,a2), b = max(a1,a2).)

Functions with optional argument named FineGrading :

canonicalCarpet(..., FineGrading => ...), see canonicalCarpet -- Carpet of given genus and Clifford index
canonicalHomotopies(..., FineGrading => ...), see canonicalHomotopies -- Homotopies on the resolution of a K3 carpet
carpet(..., FineGrading => ...), see carpet -- Ideal of the unique Gorenstein double structure on a 2-dimensional scroll

For the programmer

The object FineGrading is a symbol.