qq = rNP.quadraticForm
the polynomial that represents a pencil of quadrics qq=s*q1+t*q2 with a fixed isotropic subspace and a fixed corank one quadric in normal form q1.
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The object quadraticForm is a symbol.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/PencilsOfQuadrics.m2:2448:0.