Results 11 to 20 of about 64,055 (183)

Johnson homomorphisms

open access: yesEMS Surveys in Mathematical Sciences, 2021
Torelli groups are subgroups of mapping class groups that consist of those diffeomorphism classes that act trivially on the homology of the associated closed surface. The Johnson homomorphism, defined by Dennis Johnson, and its generalization, defined by S. Morita, are tools for understanding Torelli groups.
openaire   +3 more sources

Carter-Payne homomorphisms and Jantzen filtrations [PDF]

open access: yes, 2009
We prove a q-analogue of the Carter-Payne theorem in the case where the differences between the parts of the partitions are sufficiently large. We identify a layer of the Jantzen filtration which contains the image of these Carter-Payne homomorphisms and
A. Mathas   +14 more
core   +1 more source

Some Brunn-Minkowski type inequalities for L p $L_{p}$ radial Blaschke-Minkowski homomorphisms

open access: yesJournal of Inequalities and Applications, 2016
Schuster introduced radial Blaschke-Minkowski homomorphisms. Recently, they were generalized to L p $L_{p}$ radial Blaschke-Minkowski homomorphisms by Wang et al.
Ying Zhou, Weidong Wang
doaj   +1 more source

Duality for powerset coalgebras [PDF]

open access: yesLogical 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
doaj   +1 more source

Weakly linear homomorphisms in skew boolean modules [PDF]

open access: yesJournal of Hyperstructures, 2015
In this paper we introduce the notion of linear, weakly linear and strongly linear homomorphisms between two Skew Boolean modules and obtain various properties. We also introduce a scalar multiplication on the set of all weakly linear homomorphisms (wHom(
Dawit Chernet, K. Venkateswarlu
doaj   +1 more source

Triple Derivations and Triple Homomorphisms of Perfect Lie Superalgebras [PDF]

open access: yes, 2016
In this paper, we study triple derivations and triple homomorphisms of perfect Lie superalgebras over a commutative ring $R$. It is proved that, if the base ring contains $\frac{1}{2}$, $L$ is a perfect Lie superalgebra with zero center, then every ...
Chen, Liangyun, Ma, Yao, Zhou, Jia
core   +1 more source

Enumerating homomorphisms

open access: yesJournal 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 ...
Bulatov, Andrei A.   +3 more
openaire   +5 more sources

Special classes of homomorphisms between generalized Verma modules for ${\mathcal U}_q(su(n,n))$ [PDF]

open access: yes, 2019
We study homomorphisms between quantized generalized Verma modules $M(V_{\Lambda})\stackrel{\phi_{\Lambda,\Lambda_1}}{\rightarrow}M(V_{\Lambda_1})$ for ${\mathcal U}_q(su(n,n))$.
Jakobsen, Hans Plesner
core   +2 more sources

On the Homomorphisms of the Lie Groups and

open access: yesAbstract 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 Özdemir, Hasan Özekes
doaj   +1 more source

Graph homomorphisms and components of quotient graphs [PDF]

open access: yes, 2016
We study how the number $c(X)$ of components of a graph $X$ can be expressed through the number and properties of the components of a quotient graph $X/\sim.$ We partially rely on classic qualifications of graph homomorphisms such as locally constrained ...
Bubboloni, Daniela
core   +2 more sources

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