Results 21 to 30 of about 137,192 (245)

Julius Kruopis – the pioneer of applied statistics in Lithuania

open access: yesLithuanian Journal of Statistics, 2023
Julius Kruopis was born on 21.02.1941 in Utena district. In 1963 he graduated from Vilnius University,  Faculty of Physics and Mathematics. In 1964–1966 he worked as a  trainee lecturer at the Department of Probability Theory and Number Theory of the ...
Vilijandas Bagdonavičius   +3 more
doaj   +3 more sources

Taylor’s series expansions for real powers of two functions containing squares of inverse cosine function, closed-form formula for specific partial Bell polynomials, and series representations for real powers of Pi

open access: yesDemonstratio Mathematica, 2022
In this article, by virtue of expansions of two finite products of finitely many square sums, with the aid of series expansions of composite functions of (hyperbolic) sine and cosine functions with inverse sine and cosine functions, and in the light of ...
Qi Feng
doaj   +1 more source

On Some Formulas for the Lauricella Function

open access: yesMathematics, 2023
Lauricella, G. in 1893 defined four multidimensional hypergeometric functions FA, FB, FC and FD. These functions depended on three variables but were later generalized to many variables.
Ainur Ryskan, Tuhtasin Ergashev
doaj   +1 more source

Sum and Shifted-Product Subsets of Product-Sets over Finite Rings [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2012
For sufficiently large subsets $\mathcal{A}, \mathcal{B}, \mathcal{C}, \mathcal{D}$ of $\mathbb{F}_q$, Gyarmati and Sárközy (2008)  showed the solvability of the equations $a + b= c d$ and $a b + 1 = c d$ with $a \in \mathcal{A}$, $b \in\mathcal{B}$, $c \in \mathcal{C}$, $d \in \mathcal{D}$.
openaire   +2 more sources

Analytic Continuation of Mellin Transforms up to two-loop Order [PDF]

open access: yes, 2000
The analytic continuation of the Mellin transforms to complex values of N for the basic functions $g_i(x)$ of the momentum fraction x emerging in the quantities of massless QED and QCD up to two-loop order, as the unpolarized and polarized splitting ...
Abramowitz   +32 more
core   +2 more sources

Sums of finite products of Pell polynomials in terms of hypergeometric functions [PDF]

open access: yesJournal of the Egyptian Mathematical Society, 2022
AbstractIn this work, we study sums of finite products of Pell polynomials and express them in terms of some special orthogonal polynomials. Furthermore, each of the obtained expression is represented as linear combinations of classical polynomials involving hypergeometric functions by means of explicit computations.
Asim Patra, Gopal Krishna Panda
openaire   +2 more sources

The large N limit of SU(N) integrals in lattice models

open access: yesNuclear Physics B, 2020
The standard U(N) and SU(N) integrals are calculated in the large N limit. Our main finding is that for an important class of integrals this limit is different for two groups. We describe the critical behaviour of SU(N) models and discuss implications of
O. Borisenko, V. Chelnokov, S. Voloshyn
doaj   +1 more source

Rayleigh-Ritz majorization error bounds with applications to FEM [PDF]

open access: yes, 2009
The Rayleigh-Ritz (RR) method finds the stationary values, called Ritz values, of the Rayleigh quotient on a given trial subspace as approximations to eigenvalues of a Hermitian operator $A$.
Argentati, Merico E., Knyazev, Andrew V.
core   +1 more source

The Sum and Product of Finite Sequences of Complex Numbers [PDF]

open access: yesFormalized Mathematics, 2010
The Sum and Product of Finite Sequences of Complex Numbers This article extends the [10]. We define the sum and the product of the sequence of complex numbers, and formalize these theorems. Our method refers to the [11].
Miyajima, Keiichi, Kato, Takahiro
openaire   +2 more sources

Representing Sums of Finite Products of Chebyshev Polynomials of the First Kind and Lucas Polynomials by Chebyshev Polynomials

open access: yesMathematics, 2018
In this paper, we study sums of finite products of Chebyshev polynomials of the first kind and Lucas polynomials and represent each of them in terms of Chebyshev polynomials of all kinds.
Taekyun Kim   +3 more
doaj   +1 more source

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