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Re: Cyclotomic polynomial question
Posted:
Nov 5, 2012 3:06 PM


In article <afq6naFduk2U1@mid.dfncis.de>, <fc3a501@unihamburg.de> wrote:
> Clearly X^B*(1X)*(1+X^A+X^(2A)) are cyclotomic polynomials > of the form X^P+X^Q+X^RX^SX^TX^U (don't worry about the > X=0 stuff, I'm just too lazy to divide it out properly) but > are it the *only* ones? The (1X) factor is obvious but the > rest might telescope, e.g. like in (1X)*(1+X^3+X^4+X^6). > (The latter factor isn't cyclotomic...but COULD it be?)
Are you saying exactly what you mean? Cyclotomic polynomials are irreducible over Z, so can't have factors as you described.
Ken Pledger.



