Singular Manual: power_products

| #### D.7.1.25 power_products Procedure from library `finvar.lib` (see finvar_lib). Usage: power_products(dv,d); dv: an <intvec> giving the degrees of homogeneous polynomials, d: the degree of the desired power products Return: a size(dv)*m <intmat> where each column ought to be interpreted as containing the exponents of the corresponding polynomials. The product of the powers is then homogeneous of degree d. Example:
    LIB "finvar.lib";
    intvec dv=5,5,5,10,10;
    print(power_products(dv,10));
    ==>      2     1     1     0     0     0     0     0
    ==>      0     1     0     2     1     0     0     0
    ==>      0     0     1     0     1     2     0     0
    ==>      0     0     0     0     0     0     1     0
    ==>      0     0     0     0     0     0     0     1
    print(power_products(dv,7));
    ==>      0
    ==>      0
    ==>      0
    ==>      0
    ==>      0

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