# codim(ProjectiveVariety) -- codimension of the projective variety

## Description

Computes the codimension of the projective variety V.
 i1 : R = ZZ/101[x_0..x_3]; i2 : M = matrix{{x_0,x_1,x_2},{x_1,x_2,x_3}} o2 = | x_0 x_1 x_2 | | x_1 x_2 x_3 | 2 3 o2 : Matrix R <--- R i3 : V = Proj(R/minors(2,M)); i4 : codim V o4 = 2

## Caveat

The returned value is the usual codimension if the base graded ring is an integral domain or, more generally, equidimensional.