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200 papers

We classify homogeneous degree $d\neq2$ solutions to fully nonlinear elliptic equations.

Analysis of PDEs · Mathematics 2007-05-23 Nikolai Nadirashvili , Yu Yuan

Hypergeometric solutions to seven q-Painlev\'e equations in Sakai's classification are constructed. Geometry of plane curves is used to reduce the q-Painlev\'e equations to the three-term recurrence relations for q-hypergeometric functions.

Exactly Solvable and Integrable Systems · Physics 2007-05-23 Kenji Kajiwara , Tetsu Masuda , Masatoshi Noumi , Yasuhiro Ohta , Yasuhiko Yamada

We prove that persuasion is an NP-complete problem.

Computational Complexity · Computer Science 2025-07-09 Alban Grastien

A $\tau$ function formalism for Sakai's elliptic Painlev'e equation is presented. This establishes the equivalence between the two formulations by Sakai and by Ohta-Ramani-Grammaticos. We also give a simple geometric description of the…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 Kenji Kajiwara , Masatoshi Noumi , Tetsu Masuda , Yasuhiro Ohta , Yasuhiko Yamada

Starting with a Riccati equation solved by hypergeometric functions, some sequences of rational solutions to Painleve' VI are obtained.

Classical Analysis and ODEs · Mathematics 2007-05-23 Gert Almkvist

We consider a modified Boussinesq type equation. The Painlev\'{e} test of the WTC method is performed for this equation and it shows that the equation has weak Painlev\'{e} property. Some exact solutions are constructed.

solv-int · Physics 2016-09-08 Q. P. Liu

In this paper, we are concerned with the sign-changing solutions of variational inequality problems. In order to give the existence results of the sign-changing solutions for variational inequality problems, we first construct a suitable…

Analysis of PDEs · Mathematics 2024-04-19 Xu Xian , Wang Taotao

A general novel approach mapping discrete, combinatorial, graph-theoretic problems onto ``physical'' models - namely $n$ simplexes in $n-1$ dimensions - is applied to the graph equivalence problem. It is shown to solve this long standing…

Statistical Mechanics · Physics 2007-05-23 Vladimir Gudkov , Shmuel Nussinov

We present a determinant expression for a family of classical transcendental solutions of the Painlev\'e V and the Painlev\'e VI equation. Degeneration of these solutions along the process of coalescence for the Painlev\'e equations is…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 Tetsu Masuda

All possible 1-parametric classical and transcendent degenerated solutions of the fourth Painleve equation with the corresponding connection formulae of the asymptotic parameters are described.

solv-int · Physics 2007-05-23 Andrei A. Kapaev

This paper has inappropriate amounts of overlap with the following papers also written by the authors or their collaborators: gr-qc/0506135, gr-qc/0207026, gr-qc/0502059, gr-qc/0502061, gr-qc/0510037, and others.

General Relativity and Quantum Cosmology · Physics 2019-10-21 Ali Havare , Murat Korunur , Oktay Aydogdu , Mustafa Salti , Taylan Yetkin

We describe an approach to the question of finding real solutions to problems of enumerative geometry, in particular the question of whether a problem of enumerative geometry can have all of its solutions be real. We give some methods to…

alg-geom · Mathematics 2008-02-03 Frank Sottile

In this paper, we prove a threshold result for the Robin problem of semilinear parabolic equations

Analysis of PDEs · Mathematics 2010-03-22 Junhui Xie , Qiuyi Dai , Huaxiang Hu

The ``Painlev\'e analysis'' is quite often perceived as a collection of tricks reserved to experts. The aim of this course is to demonstrate the contrary and to unveil the simplicity and the beauty of a subject which is in fact the theory…

solv-int · Physics 2007-05-23 R. Conte

We study the equilibrium problem on general Riemannian manifolds. The results on existence of solutions and on the convex structure of the solution set are established. Our approach consists in relating the equilibrium problem to a suitable…

Optimization and Control · Mathematics 2018-01-10 Chong Li , Xiangmei Wang , Genaro LÓpez , Jen-Chih Yao

We consider the q-Painlev\'e equation of type $A_4^{(1)}$ (a version of q-Painlev\'e V equation) and construct a family of solutions expressible in terms of certain basic hypergeometric series. We also present the determinant formula for…

Exactly Solvable and Integrable Systems · Physics 2009-11-13 Taro Hamamoto , Kenji Kajiwara

We give an explicit determinant formula for a class of rational solutions of a q-analogue of the Painlev\'e V equation. The entries of the determinant are given by the continuous q-Laguerre polynomials.

Exactly Solvable and Integrable Systems · Physics 2007-05-23 Tetsu Masuda

We give a uniform estimate and an inequality for solutions of an equation with Dirichlet boundary condition.

Analysis of PDEs · Mathematics 2024-10-29 Samy Skander Bahoura

We prove a version of Dedekind's Transposition Principle that holds in lattices of equivalence relations.

Rings and Algebras · Mathematics 2013-01-30 William DeMeo

This paper will be replaced later by a revised version.

Classical Analysis and ODEs · Mathematics 2007-05-23 Y. Gaspar