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findIdempotents -- construct idempotent endomorphisms

Description

This routine constructs nontrivial idempotents in the endomorphism algebra of a module. When successful, those idempotents can be used to recover direct sum decompositions. This is the main splitting strategy for modules over local rings.

See also

Ways to use findIdempotents:

  • findIdempotents(Module)

For the programmer

The object findIdempotents is a method function with options.


The source of this document is in /build/reproducible-path/macaulay2-1.26.06+ds/M2/Macaulay2/packages/DirectSummands/docs.m2:680:0.