Results 1 to 10 of about 30,957 (176)

Endomorphism Type of P(3m + 1,3) [PDF]

open access: goldMathematics, 2023
There are six different classes of endomorphisms for a graph. The sets of these endomorphisms always form a chain under the inclusion of sets. In order to study these different endomorphisms more systematically, Böttcher and Knauer proposed the concept ...
Rui Gu, Hailong Hou
doaj   +2 more sources

Mass endomorphism and spinorial Yamabe type problems on conformally flat manifolds [PDF]

open access: bronze, 2006
Let M be a compact manifold equipped with a Riemannian metric g and a spin structure \si. We let $\lambda (M,[g],\si)= \inf_{\tilde{g} \in [g]} \lambda_1^+(\tilde{g}) Vol(M,\tilde{g})^{1/n}$ where $\lambda_1^+(\tilde{g})$ is the smallest positive ...
Ammann, Bernd   +2 more
core   +6 more sources

Endomorphism Spectra of Double-Edge Fan Graphs

open access: yesMathematics, 2023
There are six classes of endomorphisms for a graph. The sets of these endomorphisms form a chain under the inclusion of sets. In order to systematically study these endomorphisms, Böttcher and Knauer defined the concepts of the endomorphism spectrum and ...
Kaidi Xu, Hailong Hou, Yu Li
doaj   +1 more source

Descending endomorphism graphs of groups

open access: yesAKCE International Journal of Graphs and Combinatorics, 2023
We define a new type of graph of a group with reference to the descending endomorphisms of the group. A descending endomorphism of a group is an endomorphism that induces a corresponding endomorphism in every homomorphic image of the group. We define the
Vinay Madhusudanan   +2 more
doaj   +1 more source

On Anti-endomorphisms of Groupoids

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
In this paper, we study the problem of element-by-element description of the set of all anti-endomorphisms of an arbitrary groupoid. In particular, the structure of the set of all anti-automorphisms of a groupoid is studied. It turned out that the set of
A.V. Litavrin
doaj   +1 more source

On the geometry of sub-Riemannian manifolds equipped with a canonical quarter-symmetric connection

open access: yesДифференциальная геометрия многообразий фигур, 2023
In this article, a sub-Riemannian manifold of contact type is under­stood as a Riemannian manifold equipped with a regular distribution of codimension-one and by a unit structure vector field orthogonal to this distribution. This vector field is called a
S. V. Galaev
doaj   +1 more source

Endomorphism Spectra of Double Fan Graphs

open access: yesMathematics, 2020
There are six different classes of endomorphisms for a graph. The sets of these endomorphisms always form a chain under the inclusion of sets. For a more systematic treatment of different endomorphisms, Böttcher and Knauer proposed the concepts of the ...
Mengdi Tong, Hailong Hou
doaj   +1 more source

Description of the automorphism groups of some Leibniz algebras

open access: yesResearches in Mathematics, 2023
Let $L$ be an algebra over a field $F$ with the binary operations $+$ and $[,]$. Then $L$ is called a left Leibniz algebra if it satisfies the left Leibniz identity: $[[a,b],c]=[a,[b,c]]-[b,[a,c]]$ for all elements $a,b,c\in L$.
L.A. Kurdachenko, O.O. Pypka, M.M. Semko
doaj   +1 more source

Connections with parallel skew-symmetric torsion on sub-Riemannian manifolds

open access: yesДифференциальная геометрия многообразий фигур, 2020
On a sub-Riemannian manifold M of contact type, is considered an N-connection defined by the pair (, N), where is an interior metric connection, is an endomorphism of the distribution D.
S. Galaev
doaj   +1 more source

A first Catalgorithm? [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2018
We propose building a new PKC in a ring structure, the classification of rings being an open problem. The difficulty of the scheme is based on retrieving the eigenvalues of endomorphism on a finite type module over a non-commutative ring. It is resistant
Jean-François Geneste
doaj   +1 more source

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