Results 51 to 60 of about 7,762 (209)

Amenability Constants for Unconditional Sums of Banach Algebras

Mathematische Nachrichten, Volume 299, Issue 9, Page 2472-2494, September 2026.
ABSTRACT We study Johnson amenability for unconditional direct sums of Banach algebras. Given a family (Ai)i∈I$(A_i)_{i\in I}$ of Banach algebras and a Banach sequence lattice E$E$ on I$I$, the E$E$‐sum ⨁i∈IAiE${\bigl (\bigoplus _{i\in I} A_i\bigr)}_{\!E}$ carries a natural Banach algebra structure via coordinatewise multiplication.
Tomasz Kania, Jerzy Ka̧kol
wiley   +1 more source

The invariants of the second symmetric power representation of SL_2(F_q) [PDF]

, 2011
For a prime p>2 and q=p^n, we compute a finite generating set for the SL_2(F_q)-invariants of the second symmetric power representation, showing the invariants are a hypersurface and the field of fractions is a purely transcendental extension of the ...
R. James Shank, James Shank, R., Shank, R. James, Hobson, Ashley, Ashley Hobson   +4 more
core   +1 more source

Fuzzy BCI-subalgebras with interval-valued membership functions

International Journal of Mathematics and Mathematical Sciences, 2001
The purpose of this paper is to define the notion of an interval-valued fuzzy BCI-subalgebra (briefly, an i-v fuzzy BCI-subalgebra) of a BCI-algebra. Necessary and sufficient conditions for an i-v fuzzy set to be an i-v fuzzy BCI-subalgebra are stated. A
Sung Min Hong, Young Bae Jun, Seon Jeong Kim, Gwang Il Kim   +3 more
doaj   +1 more source

Introduction of Neutrosophic Soft Lie Algebras [PDF]

Neutrosophic Sets and Systems
We introduce the concept of neutrosophic soft Lie subalgebras of a Lie algebra and investigate some of their properties. The Cartesian product of neutrosophic soft Lie subalgebras will be discussed.
Sebuhi Abdullayev, Kemale Veliyeva, Sadi Bayramov   +2 more
doaj   +1 more source

Multi-folded N-Structures with Finite Degree and its Application in BCH- Algebras

International Journal of Computational Intelligence Systems, 2020
The generalization of N-structure is introduced first and then applied to BCH-algebra for research. The concepts of k-folded N-subalgebra, k-folded N-closed ideal and (closed) k-folded N-filter are introduced, and then their relations and several ...
Jeong-Gon Lee, Kul Hur, Young Bae Jun
doaj   +1 more source

Sharp Upper Bound for Amplitudes of Finite‐Gap Solutions of the Modified Korteweg‐de Vries Equation

Studies in Applied Mathematics, Volume 157, Issue 3, September 2026.
ABSTRACT A sharp upper bound is established for the amplitudes of finite‐gap solutions of the focusing modified Korteweg–de Vries equation. The proof shows that the optimization can be carried out entirely within the finite‐dimensional hierarchy, without explicit integration of the finite‐gap solution. The maximal amplitude is expressed in terms of the
Otis C. Wright III
wiley   +1 more source

e-Subalgebras and e-Homomorphisms of PGK2-Algebras

Journal of Mathematics
This paper is devoted for three main purposes. First, subalgebras, e-subalgebras of a principal generalized K2-algebra (PGK2-algebra), and their associated principal generalized K2-triples are studied. We prove that every GM-subalgebra, GK-subalgebra, De
Abd El-Mohsen Badawy, Essam El-Seidy, Mohiedeen Ahmed, Ahmed Gaber   +3 more
doaj   +1 more source

Generalizations of -Subalgebras in BCK/BCI-Algebras Based on Point -Structures

Journal of Applied Mathematics, 2012
The aim of this article is to obtain more general forms than the papers of (Jun et al. (2010); Jun et al. (in press)). The notions of -subalgebras of types , and are introduced, and the concepts of -support and -support are also introduced.
Young Bae Jun, Kyoung Ja Lee, Min Su Kang   +2 more
doaj   +1 more source

Levi Decomposition of Frobenius Lie Algebra of Dimension 6

Cauchy: Jurnal Matematika Murni dan Aplikasi, 2022
In this paper, we study notion of the Lie algebra  of dimension 6. The finite dimensional Lie algebra can be expressed in terms of decomposition between Levi subalgebra and the maximal solvable ideal.
Henti Henti, Edi Kurniadi, Ema Carnia
doaj   +1 more source

When weak convergence in von Neumann algebras implies almost uniform convergence?

Bulletin of the London Mathematical Society, Volume 58, Issue 9, September 2026.
Abstract We show that weak sequential convergence in a semifinite von Neumann algebra M$\mathcal {M}$ equipped with a faithful normal semifinite trace τ$\tau$ implies almost uniform convergence if and only if M$\mathcal {M}$ is of type Ifin$\mathrm{I}_{\rm fin}$ with τ(1)<∞;$\tau (\mathbf {1})<\infty;$ and that weak sequential convergence in a finite ...
Yerlan Nessipbayev, Fedor Sukochev, Dmitriy Zanin   +2 more
wiley   +1 more source