67.8 IsIrreducible for GModules

IsIrreducible( module )

module is a G-module. IsIrreducible tests module for irreducibility, and returns true or false. If module is reducible, a sub- and quotient-module can be constructed using InducedAction (see InducedAction).

The algorithm is described in [5].

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GAP 3.4.4
April 1997