Results 11 to 20 of about 4,846 (246)

An integral that counts the zeros of a function

open access: yesOpen Mathematics, 2018
Given a real function f on an interval [a, b] satisfying mild regularity conditions, we determine the number of zeros of f by evaluating a certain integral. The integrand depends on f, f′ and f″.
Hungerbühler Norbert, Wasem Micha
doaj   +2 more sources

Deterministic homogenization of integral functionals with convex integrands [PDF]

open access: yesNonlinear Differential Equations and Applications NoDEA, 2010
The authors develop a framework adapted to the homogenization of problems involving integral functionals and based on the concept of \(H\)-algebra. The generic problem is written as \(\min \{F_\varepsilon(v):v\in W_0^{1,p}(\Omega ;\mathbb R^n)\}\) where the functional \(F_\varepsilon\) is defined on \(W_{0}^{1,p}(\Omega ;\mathbb R^{n})\) by \(F_ ...
Nguetseng, Gabriel   +2 more
openaire   +3 more sources

Nonlinear Volterra Integrodifferential Equations from above on Unbounded Time Scales

open access: yesMathematics, 2023
The paper is devoted to studying the existence, uniqueness and certain growth rates of solutions with certain implicit Volterra-type integrodifferential equations on unbounded from above time scales.
Andrejs Reinfelds, Shraddha Christian
doaj   +1 more source

Isoperimetric and Functional Inequalities

open access: yesМоделирование и анализ информационных систем, 2018
We establish lower estimates for an integral functional$$\int\limits_\Omega f(u(x), \nabla u(x)) \, dx ,$$where \(\Omega\) -- a bounded domain in \(\mathbb{R}^n \; (n \geqslant 2)\), an integrand \(f(t,p) \, (t \in [0, \infty),\; p \in \mathbb{R}^n)\) --
Vladimir S. Klimov
doaj   +1 more source

Nonstandard optimal control problem: case study in an economical application of royalty problem

open access: yesIJAIN (International Journal of Advances in Intelligent Informatics), 2019
This paper's focal point is on the nonstandard Optimal Control (OC) problem. In this matter, the value of the final state variable, y(T) is said to be unknown.
Wan Noor Afifah Wan Ahmad   +6 more
doaj   +1 more source

Challenging the Curse of Dimensionality in Multidimensional Numerical Integration by Using a Low-Rank Tensor-Train Format

open access: yesMathematics, 2023
Numerical integration is a basic step in the implementation of more complex numerical algorithms suitable, for example, to solve ordinary and partial differential equations.
Boian Alexandrov   +4 more
doaj   +1 more source

Properties of Laplace-Stieltjes-type integrals

open access: yesМатематичні Студії, 2023
The properties of Laplace-Stieltjes-type integrals $I(r)=\int_{0}^{\infty}a(x)f(xr)dF(x)$ are studied, where $F$ is a non-negative non-decreasing unbounded continuous on the right function on $[0,\,+\infty)$, $f(z)=\sum_{k=0}^{\infty}f_kz^k$ is an entire
M. M. Sheremeta
doaj   +1 more source

Tensorial Reconstruction at the Integrand Level [PDF]

open access: yes, 2010
We present a new approach to the reduction of one-loop amplitudes obtained by reconstructing the tensorial expression of the scattering amplitudes. The reconstruction is performed at the integrand level by means of a sampling in the integration momentum.
F. Tramontano   +9 more
core   +1 more source

On duality of color and kinematics in (A)dS momentum space

open access: yesJournal of High Energy Physics, 2021
We explore color-kinematic duality for tree-level AdS/CFT correlators in momentum space. We start by studying the bi-adjoint scalar in AdS at tree-level as an illustrative example.
Soner Albayrak   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy