Results 71 to 80 of about 248,977 (280)

Twisted Alexander polynomials and surjectivity of a group homomorphism

open access: yes, 2005
If phi: G-->G' is a surjective homomorphism, we prove that the twisted Alexander polynomial of G is divisible by the twisted Alexander polynomial of G'.
Crowell   +7 more
core   +1 more source

Truncated polynomial algebras over the Steenrod algebra

open access: yesPublicacions Matemàtiques, 1990
It is shown that the classification of polynomial algebras over the mod p Steenrod algebra is an essentially different problem from the classification of polynomial algebras truncated at height greater than p over the Steenrod algebra.
openaire   +5 more sources

Study on fracture parameter calibration and failure characteristics of rock with hole and crack

open access: yesDeep Underground Science and Engineering, EarlyView.
The SIF and plastic zone equations for a single hole and crack have been derived. The model's failure state leads to the identification of four types of cracks. The plastic zone increases with increased brittleness and decreased crack length. Abstract Cracks within the surrounding rock of roadways significantly affect their stability and failure ...
Shaochi Peng, Wensong Wang
wiley   +1 more source

Some remarks about Mishchenko-Fomenko subalgebras [PDF]

open access: yes, 2014
We discuss and compare two different approaches to the notion of Mishchenko--Fomenko subalgebras in Poisson-Lie algebras of finite-dimensional Lie algebras.
Bolsinov, Alexey
core  

Moderate Deviation Principles for Lacunary Trigonometric Sums

open access: yesMathematische Nachrichten, EarlyView.
ABSTRACT Classical works of Kac, Salem, and Zygmund, and Erdős and Gál have shown that lacunary trigonometric sums despite their dependency structure behave in various ways like sums of independent and identically distributed random variables. For instance, they satisfy a central limit theorem (CLT) and a law of the iterated logarithm.
Joscha Prochno, Marta Strzelecka
wiley   +1 more source

On the degree of the polynomial defining a planar algebraic curves of constant width

open access: yes, 2013
In this paper, we consider a family of closed planar algebraic curves $\mathcal{C}$ which are given in parametrization form via a trigonometric polynomial $p$.
Bardet, Magali, Bayen, Térence
core   +1 more source

Interpolation in Valiant's theory [PDF]

open access: yes, 2007
We investigate the following question: if a polynomial can be evaluated at rational points by a polynomial-time boolean algorithm, does it have a polynomial-size arithmetic circuit? We argue that this question is certainly difficult.
Koiran, Pascal, Perifel, Sylvain
core   +3 more sources

Extending the hyper‐logistic model to the random setting: New theoretical results with real‐world applications

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
We develop a full randomization of the classical hyper‐logistic growth model by obtaining closed‐form expressions for relevant quantities of interest, such as the first probability density function of its solution, the time until a given fixed population is reached, and the population at the inflection point.
Juan Carlos Cortés   +2 more
wiley   +1 more source

The Cubic Polynomial Differential Systems with two Circles as Algebraic Limit Cycles

open access: yesAdvanced Nonlinear Studies, 2018
In this paper we characterize all cubic polynomial differential systems in the plane having two circles as invariant algebraic limit cycles.
Giné Jaume, Llibre Jaume, Valls Claudia
doaj   +1 more source

INEQUALITIES FOR ALGEBRAIC POLYNOMIALS ON AN ELLIPSE

open access: yesUral Mathematical Journal, 2020
The paper presents new solutions to two classical problems of approximation theory. The first problem is to find the polynomial that deviates least from zero on an ellipse. The second one is to find the exact upper bound of the uniform norm on an ellipse
Tatiana M. Nikiforova
doaj   +1 more source

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