Results 41 to 50 of about 60,494 (275)
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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Rings whose additive endomorphisms are ring endomorphisms [PDF]
Bulletin of the Australian Mathematical Society, 1990 A ring R is said to be an AE-ring if every additive endomorphism is a ring endomorphism. In this paper further steps are made toward solving Sullivan's Problem of characterising these rings. The classification of AE-rings with. R3 ≠ 0 is completed. Complete characterisations are given for AE-rings which are either: (i) subdirectly irreducible, (ii ...
Birkenmeier, Gary, Heatherly, Henry
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Prime ideal on the end_Z (Z^n ) Ring
Al-Jabar, 2022 The set of all endomorphisms over -module is a non-empty set denoted by . From we can construct the ring of over addition and composition function. The prime ideal is an ideal which satisfies the properties like the prime numbers.
Zakaria Bani Ikhtiyar +2 more
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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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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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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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Infinitesimally stable endomorphisms [PDF]
Transactions of the American Mathematical Society, 1994 For diffeomorphisms infinitesimal stability is well-known to be an open property that is equivalent to structural stability. The author uses an idea of K. Odani to show that for endomorphisms this property is not open. It is shown also that if an endomorphism \(f\) belongs to the interior of the set of infinitesimally stable ones, then \(f\) is ...
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Rings whose additive endomorphisms are ring endomorphisms [PDF]
Bulletin of the Australian Mathematical Society, 1992 A ring R is said to be an AE-ring if every endomorphism of its additive group R+ is a ring endomorphism. Clearly, the zero ring on any abelian group is an AE-ring. In a recent article, Birkenmeier and Heatherly characterised the so-called standard AE-lings, that is, the non-trivial AE-rings whose maximal 2-subgroup is a direct summand.
Dugas, Manfred +2 more
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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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