Singular Manual: setLetterplaceAttributes

| #### 7.11.4.11 setLetterplaceAttributes Procedure from library `freegb.lib` (see freegb_lib). Usage: setLetterplaceAttributes(R, d, b); R a ring, b,d integers Return: ring with special attributes set Purpose: sets attributes for a letterplace ring: 'isLetterplaceRing' = 'lV' = b, 'uptodeg' = d, where 'uptodeg' stands for the degree bound, 'lV' for the number of variables in the block 0. Note: Activate the resulting ring by using `setring` Example:
    LIB "freegb.lib";
    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); setring R;
    lpVarBlockSize(R);
    ==> 2
    lieBracket(x(1),y(1),2);
    ==> y(1)*x(2)*x(3)-2*x(1)*y(2)*x(3)+x(1)*x(2)*y(3)

User manual for Singular version 4-1-3, 2020, generated by texi2html.