check for absolute irreducibility

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check for absolute irreducibility

Message par jocaps » mer. déc. 12, 2018 2:25 pm


Is there an absolute irreducibility check in giac/XCas? In maple we have AIrreduc to check absolute irreducibility. For instance I can do:

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evala(AIrreduc(x^2+y^2+z^2)); #returns true
evala(AIrreduc(x^2+y^2)); #returns false

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Re: check for absolute irreducibility

Message par parisse » mer. déc. 12, 2018 2:35 pm

There is no builtin command, but if you open Help>Examples>poly>afactor.xws, there is a program that does absolute factorization, absolute irreductibility can be viewed as a particular case.