Results 61 to 70 of about 823,346 (364)

Factorisation of orthogonal projectors

Математичні Студії, 2021
We study the problem of a special factorisation of an orthogonal projector~$P$ acting in the Hilbert space $L_2(\mathbb R)$ with $\dim\ker ...
N. S. Sushchyk, V. M. Degnerys
doaj   +1 more source

Triangular matrix algebras over quasi-hereditary algebras

Tsukuba Journal of Mathematics, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Kraskiewicz-Pragacz modules and Pieri and dual Pieri rules for Schubert polynomials [PDF]

Discrete Mathematics & Theoretical Computer Science, 2020
In their 1987 paper Kraskiewicz and Pragacz defined certain modules, which we call KP modules, over the upper triangular Lie algebra whose characters are Schubert polynomials.
Masaki Watanabe
doaj   +1 more source

Twisted Classical Poincar\'{e} Algebras

, 1993
We consider the twisting of Hopf structure for classical enveloping algebra $U(\hat{g})$, where $\hat{g}$ is the inhomogenous rotations algebra, with explicite formulae given for $D=4$ Poincar\'{e} algebra $(\hat{g}={\cal P}_4).$ The comultiplications of
A Nowicki, Chaichian M, de Azcaraga J A, Drinfeld V G, Drinfeld V G, Enriquez B, Faddeev L, Gurevich G, H Ruegg, J Lukierski, Kempf A, Khoroshkin S M, Khoroshkin S M, Levendorskii S, Podles P, Rembielinski J, Reshetikhin N, V N Tolstoy, Wightman A S, Wigner E P, Woronowicz S L   +20 more
core   +3 more sources

A highly accurate numerical method for solving boundary value problem of generalized Bagley‐Torvik equation

Mathematical Methods in the Applied Sciences, EarlyView.
A highly accurate numerical method is given for the solution of boundary value problem of generalized Bagley‐Torvik (BgT) equation with Caputo derivative of order 0<β<2$$ 0<\beta <2 $$ by using the collocation‐shooting method (C‐SM). The collocation solution is constructed in the space Sm+1(1)$$ {S}_{m+1}^{(1)} $$ as piecewise polynomials of degree at ...
Suzan Cival Buranay, Mtema James Chin, Nazim I. Mahmudov   +2 more
wiley   +1 more source

Perluasan Masalah Isoperimetrik pada Bangun Ruang

Jambura Journal of Mathematics, 2023
In this paper, several extensions of the isoperimetric problem in solid figures are explored, focusing on oblique and right prisms with rectangular, right-angled triangular, and regular hexagonal bases. The objective of this research is to find the prism
Andri Setiawan, Denny Ivanal Hakim, Oki Neswan   +2 more
doaj   +1 more source

Hirano inverse of anti-triangular matrix over Banach Algebras [PDF]

, 2023
Haibo Gou, Huanyin Chen
openalex   +1 more source

Derivations and the first cohomology group of trivial extension algebras

, 2017
In this paper we investigate in details derivations on trivial extension algebras. We obtain generalizations of both known results on derivations on triangular matrix algebras and a known result on first cohomology group of trivial extension algebras. As
Bennis, Driss, Fahid, Brahim
core   +1 more source

Graded triangular algebras

The Electronic Journal of Linear Algebra, 2014
The structure of graded triangular algebras T of arbitrary dimension are studied in this paper. This is motivated in part for the important role that triangular algebras play in the study of oriented graphs, upper triangular matrix algebras or nest algebras.
openaire   +1 more source