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Author Topic:   A Deep Thought, Monty Hall, and Trisecting Angles
nwr
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Posts: 6412
From: Geneva, Illinois
Joined: 08-08-2005
Member Rating: 5.3


Message 18 of 18 (601600)
01-21-2011 9:03 PM
Reply to: Message 17 by Noetherian Atheist
01-21-2011 8:24 PM


Noetherian Atheist writes:
All you know is it's a root of an irreducible polynomial of degree 3.
My Galois theory is a bit rusty. As I recall, given an algebraic number, there is a minimal polynomial (a polynomial of least degree) that it satisfies (that part is trivial), and any polynomial that it satisfies is a multiple of the minimal polynomial. So it cannot be a root of an irreducible polynomial of degree a power of 2 (else that polynomial would not be irreducible).
Hmm, wouldn't a Noetherian (atheist or not) know that?

Jesus was a liberal hippie

This message is a reply to:
 Message 17 by Noetherian Atheist, posted 01-21-2011 8:24 PM Noetherian Atheist has not replied

  
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