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Single polynomials that correspond to pairs of cyclotomic polynomials with interlacing zeros

James McKee, Chris Smyth (2013)

Open Mathematics

We give a complete classification of all pairs of cyclotomic polynomials whose zeros interlace on the unit circle, making explicit a result essentially contained in work of Beukers and Heckman. We show that each such pair corresponds to a single polynomial from a certain special class of integer polynomials, the 2-reciprocal discbionic polynomials. We also show that each such pair also corresponds (in four different ways) to a single Pisot polynomial from a certain restricted class, the cyclogenic...

Singularité de séries de Dirichlet associées à des polynômes de plusieurs variables et applications en théorie analytique des nombres

Driss Essouabri (1997)

Annales de l'institut Fourier

Soit P [ X 1 , ... , X n ] un polynôme. On appelle série de Dirichlet associée à P la fonction : s Z ( P ; s ) = m * n P ( m ) - s ( s ) . Dans cet article nous étudions l’existence et les propriétés du prolongement méromorphe d’une telle série sous l’hypothèse qu’il existe B ] 0 , 1 [ tel que : i) P ( x ) + quand | | x | | + et x [ B , + [ n et ii) d ( Z ( P ) , [ B , + [ n ) > 0 Z ( P ) = { z n | P ( z ) = 0 } . Cette hypothèse est probablement optimale et en tout cas contient strictement toutes les classes de polynômes déjà traitées antérieurement. Sous cette hypothèse nos principaux résultats sont : l’existence du prolongement méromorphe au plan...

Six lonely runners.

Bohman, Tom, Holzman, Ron, Kleitman, Dan (2001)

The Electronic Journal of Combinatorics [electronic only]

Skolem–Mahler–Lech type theorems and Picard–Vessiot theory

Michael Wibmer (2015)

Journal of the European Mathematical Society

We show that three problems involving linear difference equations with rational function coefficients are essentially equivalent. The first problem is the generalization of the classical Skolem–Mahler–Lech theorem to rational function coefficients. The second problem is whether or not for a given linear difference equation there exists a Picard–Vessiot extension inside the ring of sequences. The third problem is a certain special case of the dynamical Mordell–Lang conjecture. This allows us to deduce...

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