Results 81 to 90 of about 406 (162)
From Endomorphisms to Automorphisms and Back: Dilations and Full Corners [PDF]
Journal of the London Mathematical Society, 2000 When S is a discrete subsemigroup of a discrete group G such that G = S^{-1} S, it is possible to extend circle-valued multipliers from S to G; to dilate (projective) isometric representations of S to (projective) unitary representations of G; and to dilate/extend actions of S by injective endomorphisms of a C*-algebra to actions of G by automorphisms ...
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On endomorphisms of the direct product of two free groups
, 2022 We describe the endomorphisms of the direct product of two free groups of finite rank and obtain conditions for which the subgroup of fixed points is finitely generated and we do the same for periodic points.
Carvalho, André
core
On cyclic automorphisms of a group
, 2021 An endomorphism α of a group G is called a cyclic endomorphism if the subgroup is cyclic for all elements x of G. It can be proved that every cyclic endomorphism is normal, i.e. it commutes with every inner automorphism of G (see [F. de Giovanni, M. L.
Brescia, M. +3 more
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ENDOMORPHISMS AND AUTOMORPHISMS OF LOCALLY COVARIANT QUANTUM FIELD THEORIES [PDF]
Reviews in Mathematical Physics, 2013 In the framework of locally covariant quantum field theory, a theory is described as a functor from a category of spacetimes to a category of *-algebras. It is proposed that the global gauge group of such a theory can be identified as the group of automorphisms of the defining functor.
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Inertial endomorphisms of an abelian group
, 2016 We describe inertial endomorphisms of an abelian group $A$, that is endomorphisms $\varphi$ with the property $|(\varphi(X)+X)/X|
RINAURO, Silvana +5 more
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On the Endomorphism Semigroups of Extra-special $p$-groups and Automorphism Orbits
International Journal of Group Theory, 2019 23 ...
Pradhan, Soham Swadhin +1 more
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Modules in which kernels of endomorphisms are invariant under all automorphisms
A right R-module M is called kernel-invariant (under automorphisms) if the kernels of all endomorphisms of M are invariant under all automorphisms of M. We show that the classes of kernel-invariant modules and rings inherit some of the important features
Chi, Nguyen Thi Diem +2 more
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Orienteering with One Endomorphism. [PDF]
Mathematica (N Y), 2023 Arpin S +5 more
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Rings generated by the inner-automorphisms of non-abelian groups
, 1971 The endomorphisms of an abelian group form a ring. The characterization of groups in which endomorphisms generate a ring is still an open question. It is shown here that the inner-automorphisms of a group generate a ring if and only if the conjugate ...
A. John Chandy
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Unlikely intersections on the p-adic formal ball. [PDF]
Res Number Theory, 2023 Serban V.
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