getDiagonalClass beta
Given a symmetric bilinear form, this method uses the diagonalizeViaCongruence command in order to produce a diagonal symmetric bilinear form isomorphic to $\beta$, with reduced square classes appearing as the diagonal entries.
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Note that the GrothendieckWittClass type caches diagonal versions of a form once they've been computed. We can recover this quickly in the following way.
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The object getDiagonalClass is a method function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/A1BrouwerDegrees/Documentation/SimplifiedRepresentativesDoc.m2:23:0.