Singular Manual: randommat

| #### D.2.10.3 randommat Procedure from library `random.lib` (see random_lib). Usage: randommat(n,m[,id,b]); n,m,b integers, id ideal Return: nxm matrix, entries are random linear combinations of elements of id and coefficients in [-b,b] [default: (id,b) = (maxideal(1),30000)] Note: For performance reasons try small bound b in char 0 Example:
    LIB "random.lib";
    ring r=0,(x,y,z),dp;
    matrix A=randommat(3,3,maxideal(2),9);
    print(A);
    ==> 9x2-2xy-8y2-9xz+yz+4z2, 9x2-4xy+y2-5xz+6yz-z2,   8x2+xy-9y2+2yz-8z2,
    ==> -x2+5xy-8y2-7xz+4yz-3z2,x2+xy-4y2-xz+5z2,        5x2-8xy+8y2+6xz+yz+7z2,
    ==> 4x2-5xy-6y2-4yz-5z2,    -4x2-6xy-4y2-8xz+3yz+5z2,2x2+3xy+y2+4xz-3yz+2z2
    A=randommat(2,3);
    print(A);
    ==> 15276x+9897y+7526z,  6495x-24178y+11295z,-5745x-14754y+15979z,
    ==> 20788x-28366y-20283z,24911x-10978y+3341z,12412x+11216y+15344z

User manual for Singular version 4-2-0p1, 2020, generated by texi2html.