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D.4.16.6 torusInvariants
Procedure from library normaliz.lib (see normaliz_lib).
- Usage:
- torusInvariants(intmat A);
torusInvariants(intmat A, intvec grading);
- Return:
- Returns an ideal representing the list of monomials generating the ring of
invariants as an algebra over the coefficient field.
The function returns the ideal given by the input matrix A if one of
the options supp , triang , volume , or
hseries has been activated.
However, in this case some numerical invariants are computed, and
some other data may be contained in files that you can read into
Singular (see showNuminvs, exportNuminvs).
- Background:
Example:
See also:
diagInvariants;
finiteDiagInvariants;
intersectionValRingIdeals;
intersectionValRings.
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