Results 31 to 40 of about 8,614,380 (320)

A parametric integer programming algorithm for bilevel mixed integer programs [PDF]

open access: yes, 2009
We consider discrete bilevel optimization problems where the follower solves an integer program with a fixed number of variables. Using recent results in parametric integer programming, we present polynomial time algorithms for pure and mixed integer ...
A. Barvinok   +23 more
core   +5 more sources

Study on the variable coefficient space–time fractional Korteweg de Vries equation

open access: yesAin Shams Engineering Journal, 2018
In this paper, the fractional Riccati method is modified for solving nonlinear variable coefficients fractional differential equations involving modified Riemann–Liouville derivative.
Emad A-B. Abdel-Salam, Gamal F. Hassan
doaj   +1 more source

Tandem Recurrence Relations for Coefficients of Logarithmic Frobenius Series Solutions about Regular Singular Points

open access: yesAxioms, 2022
We enhance Frobenius’ method for solving linear ordinary differential equations about regular singular points. Key to Frobenius’ approach is the exploration of the derivative with respect to a single parameter; this parameter is introduced through the ...
Ramses van der Toorn
doaj   +1 more source

Equal sums of like polynomials [PDF]

open access: yes, 2005
Let $f$ be a polynomial of degree $d>6$, with integer coefficients. Then the paucity of non-trivial positive integer solutions to the equation $f(a)+f(b)=f(c)+f(d)$ is established.
Browning, T. D.
core   +1 more source

An exact method for a discrete multiobjective linear fractional optimization [PDF]

open access: yes, 2007
Integer linear fractional programming problem with multiple objective MOILFP is an important field of research and has not received as much attention as did multiple objective linear fractional programming.
Chergui, M. E-A, Moulai, M.
core   +2 more sources

Practical and Secure Solutions for Integer Comparison [PDF]

open access: yes, 2007
Yao’s classical millionaires’ problem is about securely determining whether x > y, given two input values x, y, which are held as private inputs by two parties, respectively. The output x > y becomes known to both parties. In this paper, we consider a variant of Yao’s problem in which the inputs x, y as well as the output bit x > y are ...
Garay, J.   +2 more
openaire   +3 more sources

Does there Exist an Algorithm which to Each Diophantine Equation Assigns an Integer which is Greater than the Modulus of Integer Solutions, if these Solutions form a Finite Set? [PDF]

open access: yesFundamenta Informaticae, 2009
Let En = {xi = 1; xi + xj = xk; xi · xj = xk : i; j; k ∈ {1,...,n}}. We conjecture that if a system $S \subseteq E_n$ has only finitely many solutions in integers x1,...,xn, then each such solution (x1,...,xn) satisfies |x1|,...,|xn| ≤ 22n−1.
A. Tyszka
semanticscholar   +1 more source

A Study of the Soliton Solutions with an Intrinsic Fractional Discrete Nonlinear Electrical Transmission Line

open access: yesFractal and Fractional, 2022
This study aims to identify soliton structures as an inherent fractional discrete nonlinear electrical transmission lattice. Here, the analysis is founded on the idea that the electrical properties of a capacitor typically contain a non-integer-order ...
Hassan Almusawa, Adil Jhangeer
doaj   +1 more source

Positive integer solutions of certain diophantine equations

open access: yesProceedings - Mathematical Sciences, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Patel, Bijan Kumar   +2 more
openaire   +1 more source

Exact solution of the two-axis countertwisting Hamiltonian [PDF]

open access: yes, 2016
It is shown that the two-axis countertwisting Hamiltonian is exactly solvable when the quantum number of the total angular momentum of the system is an integer after the Jordan-Schwinger (differential) boson realization of the SU(2) algebra.
Draayer, Jerry P.   +2 more
core   +2 more sources

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