Results 21 to 30 of about 8,614,380 (320)

Decomposition Strategies to Count Integer Solutions over Linear Constraints

open access: yesInternational Joint Conference on Artificial Intelligence, 2021
Counting integer solutions of linear constraints has found interesting applications in various fields. It is equivalent to the problem of counting integer points inside a polytope. However, state-of-the-art algorithms for this problem become too slow for
Cunjing Ge, Armin Biere
semanticscholar   +1 more source

Existence of Self-Excited and Hidden Attractors in the Modified Autonomous Van Der Pol-Duffing Systems

open access: yesMathematics, 2023
This study investigates the multistability phenomenon and coexisting attractors in the modified Autonomous Van der Pol-Duffing (MAVPD) system and its fractional-order form.
A. E. Matouk   +4 more
doaj   +1 more source

An elementary proof of Fermat’s last theorem for all even exponents

open access: yesJournal of Mathematical Cryptology, 2020
An elementary proof that the equation x2n + y2n = z2n can not have any non-zero positive integer solutions when n is an integer ≥ 2 is presented. To prove that the equation has no integer solutions it is first hypothesized that the equation has integer ...
Karmakar Sudhangshu B.
doaj   +1 more source

Equations of higher orders

open access: yesLietuvos Matematikos Rinkinys, 2019
A complicated system of two equations with two variables is considered. The theory of equations of higher orders required for solution is given. Many different methods of solution are indicated.
Juozas Juvencijus Mačys
doaj   +1 more source

On Polynomial Solutions of Pell’s Equation

open access: yesJournal of Mathematics, 2021
Polynomial Pell’s equation is x2−Dy2=±1, where D is a quadratic polynomial with integer coefficients and the solutions X,Y must be quadratic polynomials with integer coefficients. Let D=a2x2+a1x+a0 be a polynomial in Zx.
Hasan Sankari, Ahmad Abdo
doaj   +1 more source

A Comparative Study of the Fractional-Order Clock Chemical Model

open access: yesMathematics, 2020
In this paper, a comparative study has been made between different algorithms to find the numerical solutions of the fractional-order clock chemical model (FOCCM). The spectral collocation method (SCM) with the shifted Legendre polynomials, the two-stage
Hari Mohan Srivastava, Khaled M. Saad
doaj   +1 more source

Flow shop scheduling with earliness, tardiness and intermediate inventory holding costs [PDF]

open access: yes, 2003
We consider the problem of scheduling customer orders in a flow shop with the objective of minimizing the sum of tardiness, earliness (finished goods inventory holding) and intermediate (work-in-process) inventory holding costs. We formulate this problem
Bulbul, Kerem   +3 more
core   +2 more sources

A Survey for Solving Mixed Integer Programming via Machine Learning [PDF]

open access: yesNeurocomputing, 2022
This paper surveys the trend of leveraging machine learning to solve mixed integer programming (MIP) problems. Theoretically, MIP is an NP-hard problem, and most of the combinatorial optimization (CO) problems can be formulated as the MIP.
Jiayi Zhang   +5 more
semanticscholar   +1 more source

An equation involving the F.Smarandache multiplicative function [PDF]

open access: yes, 2007
The main purpose of this paper is using the elementary methods to study the solutions of an equation involving the F.Smarandache multiplicative function, and give its all positive integer ...
Chen, Jianbin
core   +2 more sources

Pathological study on uncertain numbers and proposed solutions for discrete fuzzy fractional order calculus

open access: yesOpen Physics, 2023
A pathological study in the definition of uncertain numbers is carried out, and some solutions are proposed. Fundamental theorems for uncertain discrete fractional and integer order calculus are established.
Shiri Babak   +2 more
doaj   +1 more source

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