(A,B,A1,B1) = coxMatrices(a,b,k)
We compute the Hankel matrices over the Cox ring, which give rize to the relative quadrics of a degenerate K3 X_e(a,b) in case of k resonance within the resonance scroll, see ES2018
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The object coxMatrices is a method function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/K3Carpets.m2:2054:0.