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Melle Hernández, Alejandro and Artal Bartolo, Enrique and Cassou-Noguès, Pierrette and Luengo Velasco, Ignacio
(2005)
*Quasi-Ordinary power series and their Zeta functions.*
Memoirs of the American Mathematical Society , 178
(841).
VI-85.
ISSN 1947-6221

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Official URL: http://www.ams.org/journals/memo

## Abstract

The main objective of this paper is to prove the monodromy conjecture for the local Igusa zeta function of a quasi-ordinary polynomial of arbitrary dimension defined over a number field. In order to do it, we compute the local Denef-Loeser motivic zeta function Z(DL)(h,T) of a quasi-ordinary power series h of arbitrary dimension over an algebraically closed field of characteristic zero from its characteristic exponents without using embedded resolution of singularities. This allows us to effectively represent Z(DL)(h, T) = P(T)/Q(T) such that almost all the candidate poles given by Q(T) are poles. Anyway, these candidate poles give eigenvalues of the monodromy action on the complex R psi(h) of nearby cycles on h(-1)(0). In particular we prove in this case the monodromy conjecture made by Denef-Loeser for the local motivic zeta function and the local topological zeta function. As a consequence, if h is a quasi-ordinary polynomial defined over a number field we prove the Igusa monodromy conjecture for its local Igusa zeta function.

Item Type: | Article |
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Uncontrolled Keywords: | Motivic; Topological and Igusa zeta functions; Monodromy; Quasi-ordinary singularities |

Subjects: | Sciences > Mathematics > Algebraic geometry |

ID Code: | 13919 |

Deposited On: | 18 Nov 2011 08:21 |

Last Modified: | 06 Feb 2014 09:55 |

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