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- research-articleJanuary 2025
Dissimilar subalgebras of symmetry algebra of plasticity equations
Journal of Symbolic Computation (JOSC), Volume 127, Issue Chttps://doi.org/10.1016/j.jsc.2024.102358AbstractIn this paper we construct the optimal sets of dissimilar subalgebras up to dimension three for the Lie algebra of point symmetries of the system of three-dimensional stationary equations of perfect plasticity with the Huber–von Mises yield ...
- research-articleNovember 2024
Interpolation by decomposable univariate polynomials
AbstractThe usual univariate interpolation problem of finding a monic polynomial f of degree n that interpolates n given values is well understood. This paper studies a variant where f is required to be composite, say, a composition of two polynomials of ...
- ArticleSeptember 2024
Stability Analysis of a Differential Model for Quasi-Periodic Plasma Perturbations
AbstractThis paper deals with the stability of a differential model for quasi-periodic plasma perturbations. First, we derive the linear stability conditions on the parameters of the differential model by using symbolic computation of solving semi-...
- ArticleSeptember 2024
A Dataset for Suggesting Variable Orderings for Cylindrical Algebraic Decompositions
AbstractData have been playing a vital role in many successful applications of artificial intelligence. To embrace the power of modern artificial intelligence (AI) technology to accelerate symbolic algorithms, it is indispensable to have a large amount of ...
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- ArticleSeptember 2024
The Liouville Generator for Producing Integrable Expressions
AbstractThere has been a growing need to devise processes that can create comprehensive datasets in the world of Computer Algebra, both for accurate benchmarking and for new intersections with machine learning technology. We present here a method to ...
- research-articleAugust 2024
Arithmetic of D-algebraic functions
Journal of Symbolic Computation (JOSC), Volume 126, Issue Chttps://doi.org/10.1016/j.jsc.2024.102348AbstractWe are concerned with the arithmetic of solutions to ordinary or partial nonlinear differential equations which are algebraic in the indeterminates and their derivatives. We call these solutions D-algebraic functions, and their equations are ...
- research-articleJuly 2024
Symbolic matrix factorization for differential-algebraic equations index reduction
Journal of Computational and Applied Mathematics (JCAM), Volume 448, Issue Chttps://doi.org/10.1016/j.cam.2024.115898AbstractWe present an algorithm for the index reduction of first-order differential–algebraic equations. The proposed approach can be applied to generic differential–algebraic equations and exploits neither a priori knowledge nor ad hoc techniques to ...
- research-articleMay 2024
Toward finiteness of central configurations for the planar six-body problem by symbolic computations. (I) Determine diagrams and orders
Journal of Symbolic Computation (JOSC), Volume 123, Issue Chttps://doi.org/10.1016/j.jsc.2023.102277AbstractIn a series of papers we develop symbolic computation algorithms to investigate finiteness of central configurations for the planar n-body problem. Our approach is based on Albouy-Kaloshin's work on finiteness of central configurations for the 5-...
- research-articleApril 2024
Faster Modular Composition
Journal of the ACM (JACM), Volume 71, Issue 2Article No.: 11, Pages 1–79https://doi.org/10.1145/3638349A new Las Vegas algorithm is presented for the composition of two polynomials modulo a third one, over an arbitrary field. When the degrees of these polynomials are bounded by n, the algorithm uses O(n1.43) field operations, breaking through the 3/2 ...
- research-articleOctober 2023
Automated programming, symbolic computation, machine learning: my personal view
Annals of Mathematics and Artificial Intelligence (KLU-AMAI), Volume 91, Issue 5Pages 569–589https://doi.org/10.1007/s10472-023-09894-7AbstractIn this note, I present my personal view on the interaction of the three areas Automated Programming, Symbolic Computation, and Machine Learning. Programming is the activity of finding a (hopefully) correct program (algorithm) for a given problem. ...
- ArticleAugust 2023
Stability and Zero-Hopf Bifurcation Analysis of the Lorenz–Stenflo System Using Symbolic Methods
AbstractThis paper deals with the stability and zero-Hopf bifurcation of the Lorenz–Stenflo system by using methods of symbolic computation. Stability conditions on the parameters of the system are derived by using methods of solving semi-algebraic ...
- ArticleSeptember 2023
Iscalc: An Interactive Symbolic Computation Framework (System Description)
AbstractThe need to verify symbolic computation arises in diverse application areas. In this paper, based on earlier work on verifying computation of definite integrals in HolPy, we present a tool Iscalc for performing a variety of symbolic computations ...
- ArticleMarch 2023
Symbolic Computation in Automated Program Reasoning
AbstractWe describe applications of symbolic computation towards automating the formal analysis of while-programs implementing polynomial arithmetic. We combine methods from static analysis, symbolic summation and computer algebra to derive polynomial ...
- research-articleMarch 2023
The card guessing game: A generating function approach
Journal of Symbolic Computation (JOSC), Volume 115, Issue CPages 1–17https://doi.org/10.1016/j.jsc.2022.07.001AbstractConsider a card guessing game with complete feedback in which a deck of n cards ordered 1 , … , n is riffle-shuffled once. With the goal to maximize the number of correct guesses, a player guesses cards from the top of the deck one at ...
- research-articleJune 2022
Symmetry reductions, generalized solutions and dynamics of wave profiles for the (2+1)-dimensional system of Broer–Kaup–Kupershmidt (BKK) equations
Mathematics and Computers in Simulation (MCSC), Volume 196, Issue CPages 319–335https://doi.org/10.1016/j.matcom.2022.01.024AbstractIn this article, a (2+1)-dimensional system of Broer–Kaup–Kupershmidt (BKK) equations, which describes the non-linear, and long gravity waves in a dispersive system, is investigated by applying the method of Lie group of invariance. ...
Highlights- The system of (2+1)-dimensional Broer–Kaup–Kupershmidt (BKK) equations is investigated using the Lie symmetry approach.
- research-articleMarch 2022
Multiple-order breathers for a generalized (3+1)-dimensional Kadomtsev–Petviashvili Benjamin–Bona–Mahony equation near the offshore structure
Mathematics and Computers in Simulation (MCSC), Volume 193, Issue CPages 19–31https://doi.org/10.1016/j.matcom.2021.08.021AbstractIn this paper, a generalized (3+1)-dimensional Kadomtsev–Petviashvili Benjamin–Bona–Mahony equation which describes the fluid flow in the case of an offshore structure, is investigated. Here, making use of the bilinear form and ...
- research-articleDecember 2021
Two-to-one mappings and involutions without fixed points over F 2 n
Finite Fields and Their Applications (FFATA), Volume 76, Issue Chttps://doi.org/10.1016/j.ffa.2021.101913AbstractIn this paper, two-to-one mappings and involutions without any fixed point on finite fields of even characteristic are investigated. First, we characterize a closed relationship between them by implicit functions and develop an AGW-...
- ArticleSeptember 2021
Testing Binomiality of Chemical Reaction Networks Using Comprehensive Gröbner Systems
AbstractWe consider the problem of binomiality of the steady state ideals of biochemical reaction networks. We are interested in finding polynomial conditions on the parameters such that the steady state ideal of a chemical reaction network is binomial ...