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Let h = \sum h_{\alpha \beta} X^\alpha Y^\beta be a polynomial with complex coefficients. The Lojasiewicz exponent of the gradient of h at infinity is the upper bound of the set of all real \lambda such that |grad h(x, y)| >=…

Complex Variables · Mathematics 2009-09-25 Andrzej Lenarcik

The paper gives a full description of the growth of the gradient of a polynomial in two complex variables at infinity near any fiber of the polynomial

Algebraic Geometry · Mathematics 2007-05-23 Jacek Chadzynski , Tadeusz Krasinski

We present a global version of the {\L}ojasiewicz inequality on comparing the rate of growth of two polynomial functions in the case the mapping defined by these functions is (Newton) non-degenerate at infinity. In addition, we show that…

Algebraic Geometry · Mathematics 2021-02-16 Si-Tiep Dinh , Feng Guo , Tien-Son Pham

We present an algorithm for computing limits of quotients of real analytic functions. The algorithm is based on computation of a bound on the Lojasiewicz exponent and requires the denominator to have an isolated zero at the limit point.

Symbolic Computation · Computer Science 2021-02-03 Adam Strzebonski

We show that for a polynomial mapping F = (f_1,...,f_m): C^n \to C^m the Lojasiewicz exponent at infinity of F is attained on the set {z \in C^n : f_1(z)...f_m(z) = 0}

Algebraic Geometry · Mathematics 2007-05-23 J. Chadzynski , T. Krasinski

This note presents three resonances in commutative algebra and analytic geometry of the concept of Lojasiewicz inequality. The first is the interpretation in complex analytic geometry of the best possible exponent for a function g with…

Complex Variables · Mathematics 2012-03-05 Bernard Teissier

We develop a unified algebraic and valuative theory of Lojasiewicz exponents for pairs of graded families and filtrations of ideals. Within this framework, local Lojasiewicz exponents, gradient exponents, and exponents at infinity are all…

Commutative Algebra · Mathematics 2026-03-17 Tai Huy Ha

We consider the exponent of \L ojasiewicz inequality $\|\partial\,f(\mathbf z)\| \ge c |f(\mathbf z|^\theta$ for two classes of analytic functions and we will give an explicit estimation for $\theta$. First we consider certain…

Complex Variables · Mathematics 2020-12-01 Mutsuo Oka

The main goal of this paper is to present some explicit formulas for computing the {{\L}}ojasiewicz exponent in the {{\L}}ojasiewicz inequality comparing the rate of growth of two real bivariate analytic function germs.

Algebraic Geometry · Mathematics 2024-05-13 Si Tiep Dinh , Feng Guo , Hong Duc Nguyen , Tien Son Pham

We consider \L ojasiewicz inequalities for a non-degenerate holomorphic function with an isolated singularity at the origin. We give an explicit estimation of the \L ojasiewicz exponent in a slightly weaker form than the assertion in…

Algebraic Geometry · Mathematics 2017-05-01 Mutsuo Oka

We strengthen some estimations of the local and global {\L}ojasiewicz exponent for polynomial mappings on closed semialgebraic sets obtained by K.Kurdyka, S.Spodzieja and A.Szlachci\'nska.

Algebraic Geometry · Mathematics 2021-06-09 Kacper Grzelakowski

In this paper, we study polar quotients and \L ojasiewicz exponents of plane curve singularities, which are {\em not necessarily reduced}. We first show that the polar quotients is a topological invariant. We next prove that the \L…

Algebraic Geometry · Mathematics 2020-01-31 Hong-Duc Nguyen , Tien-Son Pham , Phi-Dung Hoang

Let $F(x) := (f_{ij}(x))_{i=1,\ldots,p; j=1,\ldots,q},$ be a ($p\times q$)-real polynomial matrix and let $f(x)$ be the smallest singular value function of $F(x).$ In this paper, we first give the following {\em nonsmooth} version of \L…

Algebraic Geometry · Mathematics 2016-04-12 Si Tiep Dinh , Tien Son Pham

We use directed graphs called "syzygy quivers" to study the asymptotic growth rates of the dimensions of the syzygies of representations of finite dimensional algebras. For any finitely generated representation of a monomial algebra, we…

Representation Theory · Mathematics 2010-11-23 Tom Howard

This paper aims to derive explicit and computable error bounds for the asymptotic expansion of the Jacobi polynomials as their degree approaches infinity, using an integral method. The analysis focuses on the outer or oscillatory region of…

Classical Analysis and ODEs · Mathematics 2025-08-07 Xiao-Min Huang , Yu Lin , Xiang-Sheng Wang , R. Wong

We study the analog of power series expansions on the Sierpinski gasket, for analysis based on the Kigami Laplacian. The analog of polynomials are multiharmonic functions, which have previously been studied in connection with Taylor…

Classical Analysis and ODEs · Mathematics 2018-06-29 Jonathan Needleman , Robert S. Strichartz , Alexander Teplyaev

We give an expression for the {\L}ojasiewicz exponent of a wide class of n-tuples of ideals $(I_1,..., I_n)$ in $\O_n$ using the information given by a fixed Newton filtration. In order to obtain this expression we consider a reformulation…

Algebraic Geometry · Mathematics 2016-12-23 Carles Bivià-Ausina , Santiago Encinas

We lift upper and lower estimates from linear functionals to $n$-homogeneous polynomials and using this result show that $l_\infty$ is finitely represented in the space of $n$-homogeneous polynomials, $n\ge2$, for any infinite dimensional…

Functional Analysis · Mathematics 2009-09-25 Sean Dineen

\noindent Let $I$ be an ideal of the ring of formal power series $\bK[[x,y]]$ with coefficients in an algebraically closed field $\bK$ of arbitrary characteristic. Let $\Phi$ denote the set of all parametrizations…

Algebraic Geometry · Mathematics 2019-10-02 A. B. de Felipe , E. R. García Barroso , J. Gwoździewicz , A. Płoski

In this note, we study the behaviour of the Lojasiewicz exponent under hyperplane sections and its relation to the order of tangency.

Algebraic Geometry · Mathematics 2021-01-05 Christophe Eyral , Tadeusz Mostowski , Piotr Pragacz
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