Results 1 to 10 of about 12,499 (158)
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.
Christopher J. Fewster
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On Automorphisms and Endomorphisms of Projective Varieties [PDF]
, 2014 We first show that any connected algebraic group over a perfect field is the neutral component of the automorphism group scheme of some normal projective variety.
Michel Brion
semanticscholar +6 more sources
Automorphisms and endomorphisms of lacunary hyperbolic groups [PDF]
Groups, Geometry, and Dynamics, 2018 In this article we study automorphisms and endomorphisms of lacunary hyperbolic groups. We show that if a lacunary hyperbolic group has the fix point property for actions on $\mathbb R$-trees, then its outer automorphism group is locally finite.
Rémi Coulon, Vincent Guirardel
semanticscholar +9 more sources
Lifting endomorphisms to automorphisms [PDF]
, 2008 Normal endomorphisms of von Neumann algebras need not be extendable to automorphisms of a larger von Neumann algebra, but they always have asymptotic lifts.
William Arveson, Dennis Courtney
core +7 more sources
Partial automorphisms and injective partial endomorphisms of a finite undirected path [PDF]
Semigroup Forum, 2021 In this paper, we study partial automorphisms and, more generally, injective partial endomorphisms of a finite undirected path from Semigroup Theory perspective.
Ilinka Dimitrova +3 more
semanticscholar +7 more sources
From endomorphisms to automorphisms and back: dilations and full corners [PDF]
Journal of the London Mathematical Society, 1999 When S is a discrete subsemigroup of a discrete group G such that G = S−1S, 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 ...
Marcelo Laca
semanticscholar +7 more sources
Endomorphisms and anti-endomorphisms of some finite groupoids
Журнал Средневолжского математического общества, 2022 In this paper, we study anti-endomorphisms of some finite groupoids. Previously, special groupoids $S(k, q)$ of order $k(1+k)$ with a generating set of $k$ elements were introduced.
Litavrin Andrey V.
doaj +2 more sources
On Anti-endomorphisms of Groupoids
Известия 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
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An inner automorphism is only an inner automorphism, but an inner endomorphism can be something strange [PDF]
, 2011 The inner automorphisms of a group G can be characterized within the category of groups without reference to group elements: they are precisely those automorphisms of G that can be extended, in a functorial manner, to all groups H given with ...
George M. Bergman
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On automorphisms of the semigroup of endomorphisms of a free abelian dimonoid
Visnyk Lvivskogo Universytetu. Seriya Mekhaniko-Matematychna, 2019 The notion of a dimonoid was introduced by J.-L. Loday in [1]. Recall that a nonempty set D with two binary associative operations a and ` is called a dimonoid if for all x, y, z ∈ D the following conditions hold: (D1) (xay)az = xa(y`z), (D2) (x`y)az = x`
Oleksandra Desiateryk
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