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In the present paper, we study deformations of polar weighted homogeneous polynomials which are also polar weighted homogeneous polynomials. We describe a round handle decomposition of the Milnor fibration of a deformation of a polar…

Geometric Topology · Mathematics 2016-09-21 Kazumasa Inaba

We recall first some basic facts on weighted homogeneous functions and filtrations in the ring $A$ of formal power series. We introduce next their analogues for weighted homogeneous diffeomorphisms and vector fields. We show that the Milnor…

Algebraic Geometry · Mathematics 2019-04-09 Imran Ahmed

Polar weighted homogeneous polynomials are the class of special polynomials of real variables $x_i,y_i, i=1,..., n$ with $z_i=x_i+\sqrt{-1} y_i$, which enjoys a "polar action". In many aspects, their behavior looks like that of complex…

Algebraic Geometry · Mathematics 2008-01-25 Mutsuo Oka

We study a simplicial mixed polynomial of cyclic type and its associated weighted homogeneous polynomial. In the present paper, we show that their links are diffeomorphic and their Milnor fibrations are isomorphic.

Algebraic Geometry · Mathematics 2016-06-14 Kazumasa Inaba , Masayuki Kawashima , Mutsuo Oka

Let $f(\bfz,\bar\bfz)$ be a mixed strongly polar homogeneous polynomial of $3$ variables $\bfz=(z_1,z_2, z_3)$. It defines a Riemann surface $V:=\{[\bfz]\in \BP^{2}\,|\,f(\bfz,\bar\bfz)=0 \}$ in the complex projective space $\BP^{2}$. We…

Algebraic Geometry · Mathematics 2010-05-11 Mutsuo Oka

Let $f_{{\bf a},\{bf b}}({\bf z},\bar{\bf z})=z_1^{a_1+b_1}\bar z_1^{b_1}+...+z_n^{a_n+b_n}\bar z_n^{b_n}$ be a polar weighted homogeneous mixed polynomial with $a_j>0,b_j\ge 0$, $j=1,..., n$ and let $f_{{\bf a}}({\bf…

Algebraic Geometry · Mathematics 2009-09-28 Mutsuo Oka

We consider a homogeneous polynomial of degree equal to a prime power and examine the cohomology of the Milnor fiber.

Algebraic Geometry · Mathematics 2022-06-06 David B. Massey

We consider mixed type multiple orthogonal polynomials associated with a system of weight functions consisting of two vectors. One vector is defined in terms of scaled modified Bessel function of the first kind $I_\mu$ and $I_{\mu+1}$, the…

Classical Analysis and ODEs · Mathematics 2016-09-28 Lun Zhang

Given a bivariate weight function defined on the positive quadrant of $\mathbb{R}^2$, we study polynomials in two variables orthogonal with respect to varying measures obtained by special modifications of this weight function. In…

Classical Analysis and ODEs · Mathematics 2024-09-26 Cleonice F. Bracciali , Antonia M. Delgado , Lidia Fernández , Teresa E. Pérez

Milnor fibrations were extended by Mutsuo Oka for certain mixed polynomial. In this paper, we study singular points of differentiable maps into the 2-dimensional torus, called Milnor fibration product maps, obtained by several Milnor…

Geometric Topology · Mathematics 2012-11-27 Daiki Sumida

We introduce the theory of local and global monodromies of polynomials in cohomology groups in various geometric situations, focusing on its relations with toric geometry and motivic Milnor fibers, and moreover in the modern languages of…

Algebraic Geometry · Mathematics 2023-12-25 Kiyoshi Takeuchi

We employ the fact certain divided differences can be written as weighted means of B-splines and hence are positive. These divided differences include the complete homogeneous symmetric polynomials of even degree $2p$, the positivity of…

Combinatorics · Mathematics 2021-02-05 Albrecht Boettcher , Stephan Ramon Garcia , Mohamed Omar , Christopher O'Neill

We survey interactions between the topology and the combinatorics of complex hyperplane arrangements. Without claiming to be exhaustive, we examine in this setting combinatorial aspects of fundamental groups, associated graded Lie algebras,…

Combinatorics · Mathematics 2010-04-13 D. A. Macinic

We describe how to compute topological objects associated to a polynomial map of several complex variables with isolated singularities. These objects are: the affine critical values, the affine Milnor numbers for all irregular fibers, the…

Algebraic Geometry · Mathematics 2007-05-23 Arnaud Bodin

The space of polynomials in two real variables with values in a 2-dimensional irreducible module of a dihedral group is studied as a standard module for Dunkl operators. The one-parameter case is considered (omitting the two-parameter case…

Classical Analysis and ODEs · Mathematics 2014-04-16 Charles F. Dunkl

The motivation for this paper are computer calculations of complete lists of weight systems of quasihomogeneous polynomials with isolated singularity at 0 up to rather large Milnor numbers. We review combinatorial characterizations of such…

Algebraic Geometry · Mathematics 2016-04-28 Claus Hertling , Ralf Kurbel

We present an algebraic theory of orthogonal polynomials in several variables that includes classical orthogonal polynomials as a special case. Our bottom line is a straightforward connection between apolarity of binary forms and the inner…

Rings and Algebras · Mathematics 2014-10-20 Pasquale Petrullo , Domenico Senato , Rosaria Simone

In this article we investigate mixed polynomials and present conditions that can be applied on a specific class of polynomials in order to prove the existence of the Milnor Fibration, Milnor-L\^e Fibration and the equivalence between them.…

Algebraic Geometry · Mathematics 2020-03-03 N. G. Grulha , R. S. Martins

We consider the problem of uniform interpolation of functions with values in a complex inner product space of finite dimension. This problem can be casted within a modified weighted pluripotential theoretic framework. Indeed, in the…

Complex Variables · Mathematics 2025-04-10 Ludovico Bruni Bruno , Federico Piazzon

We present a family of complexes playing the same role, for homogeneous variational problems, that the horizontal parts of the variational bicomplex play for variational problems on a fibred manifold. We show that, modulo certain pullbacks,…

Differential Geometry · Mathematics 2007-05-23 D. J. Saunders
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