Results 11 to 20 of about 552,366 (332)

Solving problems of radiation and diffraction electromagnetic waves based on integral representations electromagnetic field

open access: diamondФизика волновых процессов и радиотехнические системы, 2020
Various forms of integral representations of the electromagnetic field are considered. It is shown that the use of analytically developed integral representations of the electromagnetic field instead of the vector potential method makes it possible to ...
Dmitry P. Tabakov, Sergey V. Morozov
doaj   +3 more sources

Correlation functions of the XXZ spin-1/2 Heisenberg chain at the free fermion point from their multiple integral representations [PDF]

open access: green, 2002
Using multiple integral representations, we derive exact expressions for the correlation functions of the spin-1/2 Heisenberg chain at the free fermion point.Comment: 24 pages ...
Au-Yang   +29 more
core   +6 more sources

Regulator constants of integral representations of finite groups [PDF]

open access: green, 2018
Let G be a finite group and p be a prime. We investigate isomorphism invariants of $\mathbb{Z}_{p}[G]$-lattices whose extension of scalars to $\mathbb{Q}_p$ is self-dual, called regulator constants.
Torzewski, Alex
core   +4 more sources

Integral Representations of the Catalan Numbers and Their Applications

open access: yesMathematics, 2017
In the paper, the authors survey integral representations of the Catalan numbers and the Catalan–Qi function, discuss equivalent relations between these integral representations, supply alternative and new proofs of several integral representations ...
Feng Qi, Bai-Ni Guo
doaj   +1 more source

Pseudoclassical description of scalar particle in non-Abelian background and path-integral representations [PDF]

open access: yes, 2007
Path-integral representations for a scalar particle propagator in non-Abelian external backgrounds are derived. To this aim, we generalize the procedure proposed by Gitman and Schvartsman 1993 of path-integral construction to any representation of SU(N ...
Barbashov B. M.   +13 more
core   +1 more source

INTEGRAL REPRESENTATIONS FOR THE JACOBI–PINEIRO POLYNOMIALS AND THE FUNCTIONS OF THE SECOND KIND

open access: yesПроблемы анализа, 2019
We consider the Hermite – Pad´e approximants for the Cauchy transforms of the Jacobi weights in one interval. The denominators of the approximants are known as Jacobi – Pi˜neiro polynomials.
V. G. Lysov
doaj   +1 more source

Differentiation of the Mittag-Leffler Functions with Respect to Parameters in the Laplace Transform Approach

open access: yesMathematics, 2020
In this work, properties of one- or two-parameter Mittag-Leffler functions are derived using the Laplace transform approach. It is demonstrated that manipulations with the pair direct–inverse transform makes it far more easy than previous methods to ...
Alexander Apelblat
doaj   +1 more source

Common Mathematical Foundations of Expected Utility and Dual Utility Theories [PDF]

open access: yes, 2012
We show that the main results of the expected utility and dual utility theories can be derived in a unified way from two fundamental mathematical ideas: the separation principle of convex analysis, and integral representations of continuous linear ...
Dentcheva, Darinka, Ruszczynski, Andrzej
core   +2 more sources

A Short Calculation of the Multiple Sum of Krivokolesko-Leinartas with Linear Constraints on Summation Indices

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2019
The method of integral representation and calculation of the combinatorial sums of various type (the method of coefficients) using the formal Laurent power series over $\mathbbm C$, the theory of analitical functions and the theory of multiple residues ...
G.P. Egorychev
doaj   +1 more source

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