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For a germ of a meromorphic function f=P/Q, we offer notions of the monodromy operators at zero and at infinity. If the holomorphic functions P and Q are non-degenerated with respect to their Newton diagrams, we give an analogue of the…

Complex Variables · Mathematics 2008-02-03 Sabir M. Gusein-Zade , Igancio Luengo , Alejandro Melle-Hernández

For a generic (polynomial) one-parameter deformation of a complete intersection, there is defined its monodromy zeta-function. We provide explicit formulae for this zeta-function in terms of the corresponding Newton polyhedra in the case…

Algebraic Geometry · Mathematics 2012-12-04 Gleb Gusev

For an analytic family P_s of polynomials in n variables (depending on a complex number s, and defined in a neighborhood of s = 0), there is defined a monodromy transformation h of the zero level set V_s= {P_s=0} for s different from 0,…

Algebraic Geometry · Mathematics 2024-07-22 S. M. Gusein-Zade , D. Siersma

The monodromy conjecture is an umbrella term for several conjectured relationships between poles of zeta functions, monodromy eigenvalues and roots of Bernstein-Sato polynomials in arithmetic geometry and singularity theory. Even the…

Algebraic Geometry · Mathematics 2022-03-30 Alexander Esterov , Ann Lemahieu , Kiyoshi Takeuchi

A notion of Milnor fibration for meromorphic functions and the corresponding concepts of monodromy and monodromy zeta function have been introduced in [GZLM1]. In this article we define the topological zeta function for meromorphic germs…

Algebraic Geometry · Mathematics 2013-01-22 Manuel González Villa , Ann Lemahieu

Let $f(\mathbf z)$ be an analytic function defined in the neighborhood of the origin of $\mathbb C^n$ which have some Newton degenerate faces. We generalize the Varchenko formula for the zeta function of the Milnor fibration of a Newton…

Complex Variables · Mathematics 2021-05-28 Mutsuo Oka

We offer an equivariant version of the classical monodromy zeta function of a singularity as a series with coefficients from the Grothendieck ring of finite G-sets tensored by the field of rational numbers. Main two ingredients of the…

Algebraic Geometry · Mathematics 2008-03-27 S. M. Gusein-Zade , I. Luengo , A. Melle Hernandez

Motivic and topological zeta functions are singularity invariants, mainly associated to a function $f$ and a top differential form $\omega$ on a smooth variety. When $\omega$ is the standard form $dx_1\wedge \dots \wedge dx_n$ on affine…

Algebraic Geometry · Mathematics 2026-02-16 Lise Fonteyne , Willem Veys

We use the notion of Milnor fibres of the germ of a meromorphic function and the method of partial resolutions for a study of topology of a polynomial map at infinity (mainly for calculation of the zeta-function of a monodromy). It gives…

Algebraic Geometry · Mathematics 2007-05-23 S. M. Gusein-Zade , I. Luengo , A. Melle-Hernandez

Let $(X,x)$ be an isolated complete intersection singularity and let $f : (X,x) \to (\CC,0)$ be the germ of an analytic function with an isolated singularity at $x$. An important topological invariant in this situation is the…

Algebraic Geometry · Mathematics 2007-05-23 Wolfgang Ebeling

We study topological zeta functions of complex plane curve singularities using toric modifications and further developments. As applications of the research method, we prove that the topological zeta function is a topological invariant for…

Algebraic Geometry · Mathematics 2021-12-23 Quy Thuong Lê , Khanh Hung Nguyen

We discuss some features of the so-called Zariski's multiplicity problem especially the application of the work of A'Campo on the zeta function of a monodromy of an isolated singularity of a complex hypersurface to the problem.

Algebraic Geometry · Mathematics 2007-09-04 Mahdi Teymuri Garakani

This paper presents a proof of the monodromy conjecture for determinantal varieties. Our strategy centers on an in-depth analysis of monodromy zeta functions, leveraging a generalized A'Campo formula, an examination of multiple contact…

Algebraic Geometry · Mathematics 2025-10-31 Yifan Chen , Huaiqing Zuo

The monodromy conjecture states that every pole of the topological (or related) zeta function induces an eigenvalue of monodromy. This conjecture has already been studied a lot; however, in full generality it is proven only for zeta…

Algebraic Geometry · Mathematics 2009-10-13 Lise Van Proeyen , Willem Veys

By using sheaf-theoretical methods such as constructible sheaves, we generalize the formula of Libgober-Sperber concerning the zeta functions of monodromy at infinity of polynomial maps into various directions. In particular, some formulas…

Algebraic Geometry · Mathematics 2009-12-28 Yutaka Matsui , Kiyoshi Takeuchi

In this paper we define and study a Dedekind-like zeta function for the algebra of multicomplex numbers. By using the idempotent representations for such numbers, we are able to identify this zeta function with the one associated to a…

Number Theory · Mathematics 2016-01-20 A. Sebbar , D. C. Struppa , A. Vajiac , M. B. Vajiac

This is the second of four papers that study algebraic and analytic structures associated with the Lerch zeta function. In this paper we analytically continue it as a function of three complex variables. We that it is well defined as a…

Number Theory · Mathematics 2015-03-17 Jeffrey C. Lagarias , W. -C. Winnie Li

The paper \cite{BM} proposed a construction of a twisted representation of the lattice vertex algebra corresponding to the Milnor lattice of a simple singularity. The main difficulty in extending the above construction to an arbitrary…

Algebraic Geometry · Mathematics 2015-02-27 Todor Milanov

A meromorphic function on a compact complex analytic manifold defines a $\bc\infty$ locally trivial fibration over the complement of a finite set in the projective line $\bc\bp^1$. We describe zeta-functions of local monodromies of this…

Algebraic Geometry · Mathematics 2007-05-23 S. M. Gusein-Zade , I. Luengo , A. Melle-Hernandez

We consider a class of singular Riemannian manifolds, the deformed spheres $S^N_k$, defined as the classical spheres with a one parameter family $g[k]$ of singular Riemannian structures, that reduces for $k=1$ to the classical metric. After…

Mathematical Physics · Physics 2009-11-11 M. Spreafico , S. Zerbini
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