5.1.171 wedge

Syntax:

wedge ( matrix_expression, int_expression )

Type:

matrix

Purpose:

wedge(M,n) computes the n-th exterior power of the matrix M.

Example:

ring r; matrix m[2][3]=x,y,y,z,z,x; print(m); ==> x,y,y, ==> z,z,x print(wedge(m,2)); ==> xz-yz,-x2+yz,xy-yz