Results 101 to 110 of about 4,589 (218)
Natural endomorphisms of Burnside rings
, 1979 The Burnside ring B ( G ) \mathcal {B}(G) of a finite group G consists of formal differences of finite G-sets.
Andreas Blass
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The supersingular endomorphism ring problem given one endomorphism
IACR Communications in CryptologyGiven a supersingular elliptic curve E and a non-scalar endomorphism α of E, we prove that the endomorphism ring of E can be computed in classical time about disc(Z[α])^1/4, and in quantum subexponential time, assuming the generalised Riemann hypothesis. Previous results either had higher complexities, or relied on heuristic assumptions.
Herlédan Le Merdy, Arthur +1 more
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Endomorphism spectra of graphs
Discrete Mathematics, 1992 Consider graphs \(G,H\) and a mapping \(f:V(G) \to V(H)\). Suppose that \(f\) is a homomorphism of \(G\) to \(H\), i.e., that any two vertices \(u,v\) in \(f(V(G))\), for which the sets \(f^{-1} (u)\) and \(f^{-1}(v)\) are joined in \(G\) by at least one edge, are adjacent in \(H\). If also conversely, for any two vertices \(u,v \in f(V(G))\) which are
Michael Böttcher, Ulrich Knauer
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Actions of formal groups on special quotients of algebras
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2007 Let k be a field of characteristic p > 0 and let F be a one dimensional commutative formal group over k. The endomorphisms of a k-algebra A that defines an action of F on A when A is isomorphic to the quotient B/pB, with B torsion-free Z-algebra, are ...
Restuccia, G, Crupi, M
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On Endomorphisms of Algebraic Varieties
International Mathematics Research Notices, 2021 Abstract Consider an endomorphism of an algebraic variety over an algebraically closed field of characteristic zero that is injective on the complement of a proper closed subvariety. We prove that such an endomorphism is an automorphism, provided the morphism is quasi-finite.
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Recurrence sequences over near-rings
Моделирование и анализ информационных систем, 2010 Periods and statistics of linear recurrence sequences over near-rings generated by endomorphisms of finite non-abelian extra-spexdal 2-groups are investigatexl.
A. V. Sboev
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On extending endomorphisms to automorphisms
International Journal of Mathematics and Mathematical Sciences, 1988 A monic endomorphism of a structure A can be extended to an automorphism of a larger structure A*. We investigate which properties are preserved by this process.
Hilbert Levitz, Warren Nichols
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A note on tensor fields in Hilbert spaces
Anais da Academia Brasileira de Ciências, 2002 We discuss and extend to infinite dimensional Hilbert spaces a well-known tensoriality criterion for linear endomorphisms of the space of smooth vector fields in n.Discutimos e estendemos para espaços de Hilbert um critério de tensorialidade para ...
LEONARDO BILIOTTI +2 more
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Virtual endomorphisms of the group $pg$
Researches in MathematicsA virtual endomorphism of a group $G$ is a homomorphism of the form $\phi:H\rightarrow G$, where ...
I. Bondarenko, D. Zashkolny
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Lefschetz formula for nonlocal elliptic problems associated with fibration
Современная математика: Фундаментальные направленияElliptic operator complexes associated with fibration are considered. The Atiyah-Bott-Lefschetz formula for endomorphisms of such complexes is given. The proof is based on the stationary phase method.
N. R. Orlova
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