Results 91 to 100 of about 45,671 (275)

Coordinate‐ and Spacetime‐Independent Quantum Physics

Annalen der Physik, Volume 538, Issue 1, January 2026.
This article studies in the framework of quantum field theory in curved spacetime, if there exists a single zero‐rank‐tensor solution of a Klein‐Gordon PDE, being valid at once for the depicted spacetimes. The answer is shown to be affirmative, even for a class of such solutions having the standard applications in particle physics. ABSTRACT The concept
Viacheslav A. Emelyanov, Daniel Robertz
wiley   +1 more source

A solvability conditions of mixed problems for equations of parabolic type with involution

Қарағанды университетінің хабаршысы. Математика сериясы, 2018
In this work the partial differential equations with involutions are considered. The mixed problems for the parabolic type equation, with constant and variable constants, corresponding to the Dirichlet type boundary conditions is investigated.
A.A. Sarsenbi
doaj   +1 more source

On basicity of eigenfunctions of one discontinuous differential operator in Banach function spaces [PDF]

, 2022
Fatih Şirin, Yusuf Zeren, Telman Gasymov   +2 more
openalex   +1 more source

Dark diversity in temperate forests of northeastern China: drivers and implications

Oikos, Volume 2026, Issue 1, January 2026.
Understanding the species composition of a community, including those species present and those absent but potentially able to occur, is vital for assessing biodiversity changes and informing conservation planning. Typically, studies focus on observed taxonomic diversity but ignore undetected species expected to be present based on co‐occurrence ...
Wushuang Li, Minhui Hao, Chunyu Fan, Juan Wang, John A. Kershaw Jr., Caixia Li, Xiuhai Zhao, Chunyu Zhang   +7 more
wiley   +1 more source

Diffraction by Circular Pin: Wiener–Hopf Method

Mathematics
In this paper, the boundary value problem of wave diffraction on a semi-infinite circular pin is solved using the Wiener–Hopf method with compensation of eigenmodes.
Seil Sautbekov, Merey Sautbekova, Gulnara Bairova   +2 more
doaj   +1 more source

On singular integral equations with variable limits of integration

Қарағанды университетінің хабаршысы. Математика сериясы, 2019
The wide range of problems of mathematical physics is reduced to a special Volterra integral equation of the second kind or to integral equations with variable limits of integration.
D.M. Akhmanova, K.E. Kervenev, A.M. Baltabayeva   +2 more
doaj   +1 more source

Random Lie bracket on sl2(Fp)

Random Structures &Algorithms, Volume 68, Issue 1, January 2026.
ABSTRACT We study a random walk on the Lie algebra sl2(Fp)$$ {\mathfrak{sl}}_2\left({\mathbf{F}}_p\right) $$ where new elements are produced by randomly applying adjoint operators of two generators. Focusing on the generic case where the generators are selected at random, we analyze the limiting distribution of the random walk and the speed at which it
Urban Jezernik, Matevž Miščič
wiley   +1 more source

On solvability of the initial-boundary value problems for a nonlocal hyperbolic equation with periodic boundary conditions

Қарағанды университетінің хабаршысы. Математика сериясы
In this paper, the solvability of initial-boundary value problems for a nonlocal analogue of a hyperbolic equation in a cylindrical domain is studied. The elliptic part of the considered equation involves a nonlocal Laplace operator, which is introduced
M.T. Baizhanova, B.Kh. Turmetov
doaj   +1 more source

Eigenvector index for two female fertility traits based in random regression coefficients matrix in Holstein cows

Spanish Journal of Agricultural Research, 2018
A total of 71,518 days open (DO) and number of services per conception (NSC) records of 28,523 Iranian Holstein cows were analysed by random regression model.
Heydar Ghiasi, Maria J. Carabaño
doaj   +1 more source

Generic Laplace eigenfunctions on metric graphs [PDF]

, 2022
Lior Alon
openalex   +1 more source