(New page: Think I might be stumped on this problem. I was thinking to show that Eisenstein fails when n isn't prime, but I'm not sure how to do that.)
 
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*Show that <math>Phi_n(x)</math> is reducible if <math>n</math> is not prime.
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Think I might be stumped on this problem.  I was thinking to show that Eisenstein fails when n isn't prime, but I'm not sure how to do that.
 
Think I might be stumped on this problem.  I was thinking to show that Eisenstein fails when n isn't prime, but I'm not sure how to do that.

Revision as of 17:59, 8 April 2009

  • Show that $ Phi_n(x) $ is reducible if $ n $ is not prime.

Think I might be stumped on this problem. I was thinking to show that Eisenstein fails when n isn't prime, but I'm not sure how to do that.

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Basic linear algebra uncovers and clarifies very important geometry and algebra.

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