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Primitive Prime Divisors in Zero Orbits of Polynomials

  • Kevin Doerksen EMAIL logo and Anna Haensch
Published/Copyright: May 31, 2012
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Integers
From the journal Volume 12 Issue 3

Abstract.

Let be a sequence of integers. A primitive prime divisor of a term is a prime which divides but does not divide any of the previous terms of the sequence. A zero orbit of a polynomial is a sequence of integers where the n-th term is the n-th iterate of at 0. We consider primitive prime divisors of zero orbits of polynomials. In this note, we show that for in , where and , every iterate in the zero orbit of contains a primitive prime divisor whenever zero has an infinite orbit. If , then every iterate after the first contains a primitive prime divisor.

Received: 2010-09-20
Revised: 2011-06-02
Accepted: 2012-01-01
Published Online: 2012-05-31
Published in Print: 2012-June

© 2012 by Walter de Gruyter Berlin Boston

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