Results 41 to 50 of about 55,047 (231)
Additive unit structure of endomorphism rings and invariance of modules [PDF]
, 2016 We use the type theory for rings of operators due to Kaplansky to describe the structure of modules that are invariant under automorphisms of their injective envelopes. Also, we highlight the importance of Boolean rings in the study of such modules. As a
P. A. G. Asensio +2 more
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On Stability of Endomorphisms [PDF]
Proceedings of the American Mathematical Society, 1988 In this note we prove a generalization of R. Mañé’s theorem. R. Mañé proved that C r {C^r} absolutely stable endomorphisms satisfy Axiom A. We prove that if an endomorphism f f is both C r {C^r} structurally and infinitesimally ...
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Local spectral theory of endomorphisms of the disk algebra
Demonstratio Mathematica, 2016 Let A(𝔻) denote the disk algebra. Every endomorphism of A(𝔻) is induced by some ϕ ∈ A(𝔻) with ‖ϕ‖ ≤ 1. In this paper, it is shown that if ϕ is not an automorphism of 𝔻 and ϕ has a fixed point in the open unit disk then the endomorphism induced by ϕ is ...
Trivedi Shailesh, Chandra Harish
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Remarks on log Calabi--Yau structure of varieties admitting polarized endomorphism [PDF]
, 2016 We discuss the Calabi--Yau type structure of normal projective surfaces and Mori dream spaces admitting a non-trivial polarized endomorphism.
Amaël Broustet, Yoshinori Gongyo
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Epis and monos which must be isos
International Journal of Mathematics and Mathematical Sciences, 1984 Orzech [1] has shown that every surjective endomorphism of a noetherian module is an isomorphism. Here we prove analogous results for injective endomorphisms of noetherian injective modules, and the duals of these results.
David J. Fieldhouse
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STRINGS OF GROUP ENDOMORPHISMS [PDF]
Journal of Algebra and Its Applications, 2010 Recently the strings and the string number of self-maps were used in the computation of the algebraic entropy of specific abelian group endomorphisms. We introduce two special kinds of strings, and their relative string numbers. We show that a dichotomy holds for all these three string numbers; in fact, they admit only zero and infinity as values on ...
DIKRANJAN, Dikran +2 more
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Endomorphism Algebras of Abelian varieties with special reference to Superelliptic Jacobians [PDF]
, 2016 This is (mostly) a survey article. We use an information about Galois properties of points of small order on an abelian variety in order to describe its endomorphism algebra over an algebraic closure of the ground field. We discuss in detail applications
Y. Zarhin
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The spacetime of a shift endomorphism [PDF]
Transactions of the American Mathematical Society, 2016 The automorphism group of a one dimensional shift space over a finite alphabet exhibits different types of behavior: for a large class with positive entropy, it contains a rich collection of subgroups, while for many shifts of zero entropy, there are ...
Van Cyr, J. Franks, Bryna Kra
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On central endomorphisms of a group [PDF]
International Journal of Group Theory, 2015 Let Γ be a normal subgroup of the full automorphism group Aut(G) of a group G , and assume that Inn(G)≤Γ . An endomorphism σ of G is said to be {\it Γ -central} if σ induces the the identity on the factor group G/C G (Γ) .
Alessio Russo
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Strong endomorphism kernel property for monounary algebras [PDF]
Mathematica Bohemica, 2018 All monounary algebras which have strong endomorphism kernel property are described.
Emília Halušková
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