Results 21 to 30 of about 1,782,193 (256)

On Gelfand-Mazur theorem on a class of F-algebras

open access: yesTopological Algebra and its Applications, 2014
A topological algebra A is said to be fundamental if there exists b > 1 such that for every sequence(xn) in A, (xn) is Cauchy whenever the sequence bn(xn − xn-1) tends to zero as n → ∞.
Anjidani E.
doaj   +1 more source

Hierarchical Zonotopal Power Ideals [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
Zonotopal algebra deals with ideals and vector spaces of polynomials that are related to several combinatorial and geometric structures defined by a finite sequence of vectors.
Matthias Lenz
doaj   +1 more source

DMA:an algebra for multicriteria spatial modeling [PDF]

open access: yes, 2006
The objective of this paper is to propose a new algebra, called decision map algebra (DMA), especially devoted to multicriteria spatial modeling. DMA is a generic and context-independent modeling language inspired from map algebra and other similar ...
Chakhar, Salem, Mousseau, Vincent
core   +1 more source

p-Absolutely summable sequences of fuzzy real numbers [PDF]

open access: yesMaejo International Journal of Science and Technology, 2013
In this paper the fuzzy sequence space is introduced and some algebraic properties such as solidness, symmetricalness, convergence free and sequence algebra are studied, and some inclusion relations for the space are provided.
Ayhan Esi
doaj  

Gysin sequences and SU(2)‐symmetries of C∗‐algebras

open access: yesTransactions of the London Mathematical Society, 2021
Motivated by the study of symmetries of C∗‐algebras, as well as by multivariate operator theory, we introduce the notion of an SU(2)‐equivariant subproduct system of Hilbert spaces. We analyse the resulting Toeplitz and Cuntz–Pimsner algebras and provide
Francesca Arici, Jens Kaad
doaj   +1 more source

On the Non-Abelian U-Duality of 11D Backgrounds

open access: yesUniverse, 2022
In this work, we generalise the procedure of the non-abelian T-duality based on a B-shift and a sequence of formal abelian T-dualities in non-isometric directions to 11-dimensional backgrounds.
Edvard T. Musaev
doaj   +1 more source

On Instruction Sets for Boolean Registers in Program Algebra [PDF]

open access: yesScientific Annals of Computer Science, 2016
In previous work carried out in the setting of program algebra, including work in the area of instruction sequence size complexity, we chose instruction sets for Boolean registers that contain only instructions of a few of the possible kinds.
J.A. Bergstra, C.A. Middelburg
doaj   +1 more source

Nilpotent subspaces of maximal dimension in semisimple Lie algebras [PDF]

open access: yes, 2006
We show that a linear subspace of a reductive Lie algebra g that consists of nilpotent elements has dimension at most equal to the number of positive roots, and that any nilpotent subspace attaining this upper bound is equal to the nilradical of a Borel ...
Kuttler, J   +8 more
core   +1 more source

Some Double Sequence Spaces of Fuzzy Real Numbers of Paranormed Type

open access: yesJournal of Mathematics, 2013
We study different properties of convergent, null, and bounded double sequence spaces of fuzzy real numbers like completeness, solidness, sequence algebra, symmetricity, convergence-free, and so forth. We prove some inclusion results too.
Bipul Sarma
doaj   +1 more source

Spontaneous symmetry breaking from anyon condensation

open access: yesJournal of High Energy Physics, 2019
In a physical system undergoing a continuous quantum phase transition, spontaneous symmetry breaking occurs when certain symmetries of the Hamiltonian fail to be preserved in the ground state.
Marcel Bischoff   +3 more
doaj   +1 more source

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