Singular Manual: coker

| #### D.4.16.23 coker Procedure from library `modules.lib` (see modules_lib). Usage: coker(M), M a Matrix Return: Module, the coker of M Example:
    LIB "modules.lib";
    ring r;
    matrix m[2][2]=x,y2,z,xz;
    Matrix M=m;
    M;
    ==>     {1}  {2}
    ==> {0}   x   y2
    ==> {0}   z   xz
    ==>
    coker(M);
    ==> cokernel | x y2 |
    ==>          | z xz |
    ==>
    ==>

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