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dualToIdeal -- dual ideal

Description

Takes an ideal I as input, dualizes the ideal, and maps it back into the ring, producing Hom_R(I,R) ~ J < R. Used to produce the global sections H^0(mD), where D is an integral divisor defined by I.

For the programmer

The object dualToIdeal is a method function.


The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/SectionRing.m2:395:0.