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This paper explores the well known approximation approach to decide weak bisimilarity of Basic Parallel Processes. We look into how different refinement functions can be used to prove weak bisimilarity decidable for certain subclasses. We…

Formal Languages and Automata Theory · Computer Science 2012-08-15 Piotr Hofman , Patrick Totzke

We apply the Thom-Milnor theorem to obtain the upper bounds on the amount of isolated (1) critical points of a potential generated by several fixed point charges(Maxwell's problem on point charges), (2) critical points of SINR, (3) critical…

Mathematical Physics · Physics 2023-07-18 Vladimir Zolotov

The existence of unimodular forms with small norms on sequence spaces is crucial in a variety of problems in modern analysis. We prove that the infimum of $\left\Vert A\right\Vert $ over all unimodular $d$-linear (complex or real) forms $A$…

Functional Analysis · Mathematics 2019-12-16 Nacib Gurgel Albuquerque , Lisiane Rezende

Prefix normal words are binary words in which each prefix has at least the same number of $\so$s as any factor of the same length. Firstly introduced by Fici and Lipt\'ak in 2011, the problem of determining the index of the prefix…

Formal Languages and Automata Theory · Computer Science 2020-05-20 Pamela Fleischmann , Mitja Kulczynski , Dirk Nowotka

Meanders form a set of combinatorial problems concerned with the enumeration of self-avoiding loops crossing a line through a given number of points, $n$. Meanders are considered distinct up to any smooth deformation leaving the line fixed.…

Statistical Mechanics · Physics 2007-05-23 Iwan Jensen , Anthony J Guttmann

We prove a new lower bound for the Mahler measure of a polynomial in one and in several variables that depends on the complex coefficients, and the number of monomials. In one variable our result generalizes a classical inequality of…

Number Theory · Mathematics 2022-03-22 Shabnam Akhtari , Jeffrey D. Vaaler

In a previous paper, Yakubovich and the author of this article proved that certain shifted combinations of completed Dirichlet series have infinitely many zeros on the critical line. Here we provide some lower bounds for the number of…

Number Theory · Mathematics 2024-01-08 Pedro Ribeiro

We obtain limit theorems for extreme residuals in linear regression model in the case of minimax estimation of parameters.

Probability · Mathematics 2015-10-08 Aleksander Ivanov , Ivan Matsak , Sergiy Polotskiy

We extend some results on even sets of nodes which have been proved for surfaces up to degree 6 to surfaces up to degree 10. In particular, we give a formula for the minimal cardinality of a nonempty even set of nodes.

alg-geom · Mathematics 2007-05-23 Stephan Endrass

The purpose of [1] was as follows. ?We consider special sets of continuants which occur in applications. For these sets we solve the problem of finding maximal and minimal continuants. There are several methods for finding extremum such as…

Number Theory · Mathematics 2021-06-08 I. D. Kan

We study the problems of finding a shortest synchronizing word and its length for a given prefix code. This is done in two different settings: when the code is defined by an arbitrary decoder recognizing its star and when the code is…

Formal Languages and Automata Theory · Computer Science 2018-06-19 Andrew Ryzhikov , Marek Szykuła

The minimum number of clauses in a CNF representation of the parity function $x_1 \oplus x_2 \oplus \dotsb \oplus x_n$ is $2^{n-1}$. One can obtain a more compact CNF encoding by using non-deterministic variables (also known as guess or…

Computational Complexity · Computer Science 2022-05-17 Gregory Emdin , Alexander S. Kulikov , Ivan Mihajlin , Nikita Slezkin

This paper addresses the problem of deciding the lower-boundedness of an arbitrary real polynomial p in n variables.

Optimization and Control · Mathematics 2025-12-01 Nguyen Hong Duc , Vu Trung Hieu

We obtain tight bounds for the minimal number of generators of an ideal with bounded-degree generators in a polynomial ring $K[X_1,\dots,X_n],$ as well as a sharp quantification of the maximum possible size of a minimal generating set of…

Commutative Algebra · Mathematics 2025-09-23 Andrei Mandelshtam

In this paper, we extend the theory of minimal limit key polynomials of valuations on the polynomial ring $\kx$. We use the theory of cuts on ordered abelian groups to show that the previous results on bounded sets of key polynomials of…

Commutative Algebra · Mathematics 2023-11-23 Enric Nart , Josnei Novacoski

We describe here, for the first time, a lower bound on the total number of fundamental constants required for a mathematical description of our physical universe to be complete. The answer is shown to be one. The formal arithmetized…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-01 William Luke Matthewson

We provide a simple proof of the radial symmetry of any nonnegative minimizer for a general class of quasi-linear minimization problems

Functional Analysis · Mathematics 2010-04-21 H. Hjaiej , M. Squassina

We use the optimized perturbation theory, or linear delta expansion, to evaluate the critical exponents in the critical 3d O(N) invariant scalar field model. Regarding the implementation procedure, this is the first successful attempt to…

Other Condensed Matter · Physics 2009-11-10 Marcus Benghi Pinto , Rudnei O. Ramos , Paulo J. Sena

We characterize componentwise linear monomial ideals with minimal Taylor resolution and consider the lower bound for the Betti numbers of componentwise linear ideals.

Commutative Algebra · Mathematics 2007-05-23 Juergen Herzog , Takayuki Hibi , Satoshi Murai , Yukihide Takayama

We give the classification, up to homeomorphisms, of reduced complex polynomials with 2 variables with one critical value.

Algebraic Geometry · Mathematics 2007-05-23 Arnaud Bodin