deficiencyModule(M,i)
deficiencyModule(I,i)
Let $S=K[x_1,\ldots,x_n]$ be the polynomial ring. Given a $S$-module $M$ (or an ideal $I\subset S$), it returns the $i$th module of deficiency $\omega^i(M)$ (or $\omega^i(S/I)$), defined as $\mathrm{Ext}_S^{n-i}(M,S(-n))$.
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The object deficiencyModule is a method function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/SCMAlgebras.m2:315:0.