Results 11 to 20 of about 6,567 (235)
Semitopological Homomorphisms [PDF]
Rendiconti del Seminario Matematico della UniversitΓ di Padova, 2008 Inspired by an analogous result of Arnautov about isomorphisms, we prove that all continuous surjective homomorphisms of topological groups f :G β H can be obtained as restrictions of open continuous surjective homomorphisms
Giordano Bruno, Anna
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Approximate π-Lie Homomorphisms and Jordan π-Lie Homomorphisms on π-Lie Algebras [PDF]
Abstract and Applied Analysis, 2012 Using fixed point methods, we establish the stability of π-Lie homomorphisms and Jordan π-Lie homomorphisms on π-Lie algebras associated to the following generalized Jensen functional equation βππ(ππ=1π₯πβ/π)+πππ=2βπ(ππ=1,πβ ππ₯πβ(πβ1)π₯π/π)=π(ππ₯1)(πβ₯2).
M. Eshaghi Gordji, G. H. Kim
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Fredholm Theory Relative to Any Algebra Homomorphisms
MathematicsIn this paper, we give another definition of Ruston elements and almost Ruston elements, which is equivalent to the definitions given by Mouton and Raubenheimer in the case that the homomorphism has a closed range and Riesz property.
Yingying Kong, Yabo Wang, Jingen Yang
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On skew derivations as homomorphisms or anti-homomorphisms [PDF]
Commentationes Mathematicae Universitatis Carolinae, 2016 Let \(R\) be a prime ring. An additive map \(\delta :R\to R\) is called a skew derivation on \(R\) if there exists an automorphism \(\phi\) of \(R\) such that \(\delta(xy)=\delta(x)y+\phi(x)\delta(y)\) for all \(x,y\in R\). The paper presents a single theorem, stated as follows: Let \(R\) be prime with center \(Z\), and let \(I\) be a nonzero ideal of \
Raza, Mohd Arif +2 more
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On the complexity of counting homomorphisms under surjectivity constraints
, 2021 Given two graphs G and H, a function h that maps the vertices of G to vertices of H is a (graph) homomorphism if h preserves the edges of G, i.e., whenever two vertices u, v of G share an edge then h(u) and h(v) must share an edge in H.
Focke, Jacob
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Journal of Computer and System Sciences, 2012 The homomorphism problem for relational structures is an abstract way of formulating constraint satisfaction problems (CSP) and various problems in database theory. The decision version of the homomorphism problem received a lot of attention in literature; in particular, the way the graph-theoretical structure of the variables and constraints ...
Andrei A. Bulatov +3 more
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Continuity of homomorphisms and derivations from algebras of approximable and nuclear operators [PDF]
, 1994 1. Let be a Banach algebra. We say that homomorphisms from are continuous if every homomorphism from into a Banach algebra is automatically continuous, and that derivations from are continuous if every derivation from into a Banach -bimodule is ...
Dales, H.G. +3 more
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Homomorphisms of heterogeneous algebras [PDF]
, 1970 summary:A construction of all homomorphisms of a heterogeneous algebra into an algebra of the same type is presented. A relational structure is assigned to any heterogeneous algebra, and homomorphisms between these relational structures make it possible ...
Birkhoff, Garrett +5 more
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On the Homomorphisms of the Lie Groups and
Abstract and Applied Analysis, 2013 We first construct all the homomorphisms from the Heisenberg group to the 3-sphere. Also, defining a topology on these homomorphisms, we regard the set of these homomorphisms as a topological space.
Fatma Γzdemir, Hasan Γzekes
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Duality for powerset coalgebras [PDF]
Logical Methods in Computer Science, 2022 Let CABA be the category of complete and atomic boolean algebras and complete boolean homomorphisms, and let CSL be the category of complete meet-semilattices and complete meet-homomorphisms. We show that the forgetful functor from CABA to CSL has a left
Guram Bezhanishvili +2 more
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