| ##### 7.7.8.0. lpPower Procedure from library `freegb.lib` (see freegb_lib). Usage: lpPower(f,n); f letterplace polynomial, int n Return: poly Assume: basering has a letterplace ring structure Purpose: compute the letterplace form of f^n Example:
    LIB "freegb.lib";
    // define a ring in letterplace form as follows:
    ring r = 0,(x(1),y(1),x(2),y(2),x(3),y(3),x(4),y(4)),dp;
    def R = setLetterplaceAttributes(r,4,2); // supply R with letterplace structure
    setring R;
    poly a = x(1)*y(2) + y(1); poly b = y(1) - 1;
    lpPower(a,2);
    ==> x(1)*y(2)*x(3)*y(4)+y(1)*x(2)*y(3)+x(1)*y(2)*y(3)+y(1)*y(2)
    lpPower(b,4);
    ==> y(1)*y(2)*y(3)*y(4)-4*y(1)*y(2)*y(3)+6*y(1)*y(2)-4*y(1)+1

User manual for Singular version 4-0-2, 2015, generated by texi2html.