BettiMatrix -- the matrix of the graded Betti numbers |
Syntax |
BettiMatrix(M: IDEAL|MODULE|LISTResolution) |
Description |
Example |
/**/ use R ::= QQ[t,x,y,z]; /**/ I := ideal(x^2-y*t, x*y-z*t, x*y); /**/ PrintRes(I); 0 --> R^2(-5) --> R^4(-4) --> R^3(-2) /**/ BettiMatrix(I); matrix(ZZ, [[0, 0, 0], [3, 0, 0], [0, 0, 0], [0, 4, 0], [0, 0, 2]]) /**/ PrintBettiMatrix(I); -- --> --> -- 0 0 0 0 0 3 0 0 0 0 4 0 2 0 0 -- --> --> -- |
See Also |