Results 11 to 20 of about 1,287 (106)

A short proof of the Buchstaber-Rees theorem [PDF]

open access: yes, 2010
We give a short proof of the Buchstaber-Rees theorem concerning symmetric powers. The proof is based on the notion of a formal characteristic function of a linear map of algebras.Comment: 11 pages ...
H. M. Khudaverdian, Th, Th. Voronov
core   +2 more sources

Analytic equivalence of normal crossing functions on a real analytic manifold [PDF]

open access: yes, 2009
By Hironaka Desingularization Theorem, any real analytic function has only normal crossing singularities after a suitable modification. We focus on the analytic equivalence of such functions with only normal crossing singularities. We prove that for such
Fichou, Goulwen, Shiota, Masahiro
core   +5 more sources

Geometrical Description of the Local Integrals of Motion of Maxwell-Bloch Equation [PDF]

open access: yes, 1995
We represent a classical Maxwell-Bloch equation and related to it positive part of the AKNS hierarchy in geometrical terms. The Maxwell-Bloch evolution is given by an infinitesimal action of a nilpotent subalgebra $n_+$ of affine Lie algebra $\hat {sl}_2$
Antonov, A. V.   +2 more
core   +3 more sources

Characterizations of derivations [PDF]

open access: yes, 2019
The main purpose of this work is to characterize derivations through functional equations. This work consists of five chapters. In the first one, we summarize the most important notions and results from the theory of functional equations. In Chapter 2 we
Gselmann, Eszter
core   +2 more sources

The Gelfand map and symmetric products

open access: yes, 2001
If A is an algebra of functions on X, there are many cases when X can be regarded as included in Hom(A,C) as the set of ring homomorphisms. In this paper the corresponding results for the symmetric products of X are introduced.
A. Bergmann   +12 more
core   +1 more source

Operators on superspaces and generalizations of the Gelfand-Kolmogorov theorem

open access: yes, 2007
(Write-up of a talk at the Bialowieza meeting, July 2007.) Gelfand and Kolmogorov in 1939 proved that a compact Hausdorff topological space $X$ can be canonically embedded into the infinite-dimensional vector space $C(X)^* $, the dual space of the ...
Anatol Odzijewicz   +5 more
core   +1 more source

On generalized symmetric powers and a generalization of Kolmogorov-Gelfand-Buchstaber-Rees theory

open access: yes, 2007
The classical Kolmogorov-Gelfand theorem gives an embedding of a (compact Hausdorff) topological space X into the linear space of all linear functionals C(X)^* on the algebra of continuous functions C(X).
Khudaverdian, H. M., Voronov, Th. Th.
core   +1 more source

N-multipliers and their relations with n-homomorphisms

open access: yes, 2016
Let $A$ be a Banach algebra and $X$ be a Banach $A$-bimodule. We introduce and study the notions of $n$-multipliers and approximate local $n$-multipliers by generalizing the classical concept of multipliers from $A$ into $X$.
Fozouni, Mohammad, Laali, Javad
core   +1 more source

On Oriented Colourings of Graphs on Surfaces

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT For an oriented graph G $G$, the least number of colours required to oriented colour G $G$ is called the oriented chromatic number of G $G$ and denoted χ o ( G ) ${\chi }_{o}(G)$. For a non‐negative integer g $g$ let χ o ( g ) ${\chi }_{o}(g)$ be the least integer such that χ o ( G ) ≤ χ o ( g ) ${\chi }_{o}(G)\le \unicode{x0200A}{\chi }_{o}(g)
Alexander Clow
wiley   +1 more source

Signed Projective Cubes, a Homomorphism Point of View

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT The (signed) projective cubes, as a special class of graphs closely related to the hypercubes, are on the crossroad of geometry, algebra, discrete mathematics and linear algebra. Defined as Cayley graphs on binary groups, they represent basic linear dependencies.
Meirun Chen   +2 more
wiley   +1 more source

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