Results 31 to 40 of about 152,483 (296)

Infinitesimal Morita homomorphisms and the tree-level of the LMO invariant [PDF]

open access: yes, 2011
Let S be a compact connected oriented surface with one boundary component, and let P be the fundamental group of S. The Johnson filtration is a decreasing sequence of subgroups of the Torelli group of S, whose k-th term consists of the self ...
Massuyeau, Gwenael
core   +3 more sources

Simplifications of homomorphisms

open access: yesInformation and Control, 1978
The notion of a simplification of a homomorphism is introduced and investigated. Its usefulness is demonstrated in providing rather short proofs of the following results: (i) Given an arbitrary homomorphism h and arbitrary words x, y it is decidable whether or not there exists an integer n such that hn(x) = hn(y). (ii) Given an arbitrary homomorphism h
Grzegorz Rozenberg, Andrzej Ehrenfeucht
openaire   +3 more sources

The Homomorphism Theorems of M-Hazy Rings and Their Induced Fuzzifying Convexities

open access: yesMathematics, 2020
In traditional ring theory, homomorphisms play a vital role in studying the relation between two algebraic structures. Homomorphism is essential for group theory and ring theory, just as continuous functions are important for topology and rigid movements
F. Mehmood   +3 more
semanticscholar   +1 more source

SMARANDACHE NEAR-RINGS AND THEIR GENERALIZATIONS [PDF]

open access: yes, 2002
In this paper we study the Smarandache semi-near-ring and nearring, homomorphism, also the Anti-Smarandache semi-near-ring. We obtain some interesting results about them, give many examples, and pose some problems.
Vasantha Kandasamy, W.B.
core   +1 more source

Homomorphism obstructions for satellite maps [PDF]

open access: yesTransactions of the American Mathematical Society. Series B, 2019
A knot in a solid torus defines a map on the set of (smooth or topological) concordance classes of knots in S 3 S^3 . This set admits a group structure, but a conjecture of Hedden suggests that satellite maps never induce interesting ...
Allison N. Miller
semanticscholar   +1 more source

Exact Algorithm for Graph Homomorphism and Locally Injective Graph Homomorphism [PDF]

open access: yes, 2013
For graphs $G$ and $H$, a homomorphism from $G$ to $H$ is a function $\varphi \colon V(G) \to V(H)$, which maps vertices adjacent in $G$ to adjacent vertices of $H$. A homomorphism is locally injective if no two vertices with a common neighbor are mapped
Rzążewski, Paweł
core   +1 more source

Universal mapping properties of some pseudovaluation domains and related quasilocal domains

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
If (R,M) and (S,N) are quasilocal (commutative integral) domains and f:R→S is a (unital) ring homomorphism, then f is said to be a strong local homomorphism (resp., radical local homomorphism) if f(M)=N (resp., f(M)⊆N and for each x∈N, there exists a
Ahmed Ayache   +2 more
doaj   +1 more source

Subexponential algorithms for variants of homomorphism problem in string graphs [PDF]

open access: yesInternational Workshop on Graph-Theoretic Concepts in Computer Science, 2018
We consider the complexity of finding weighted homomorphisms from intersection graphs of curves (string graphs) with $n$ vertices to a fixed graph $H$.
Karolina Okrasa, Paweł Rzaͅżewski
semanticscholar   +1 more source

Homomorphism and sigma polynomials

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
By establishing a connection between the sigma polynomial and the homomorphism polynomial, many of the proofs for computing the sigma polynmial are simplified, the homomorphism polynomial can be identified for several new classes of graphs, and progress ...
Richard Alan Gillman
doaj   +1 more source

Bijections and homomorphisms

open access: yesSemigroup Forum, 1984
Conditions on a map \(f:L\to M\) from a lattice L to a lattice M are considered under which f is a homomorphism of lattices in the case when f is a bijection. The main result of the paper is the following Theorem 4. Let L and M be lattices and let f:\(L\to M\) be a bijection.
Johnson, J., Moss, K.
openaire   +2 more sources

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