Results 81 to 90 of about 7,742 (177)
Generators of semigroups of completely positive maps [PDF]
Communications in Mathematical Physics, 1978 Any generator of a norm continuous semigroup of completely positive normal maps on a von Neumann algebraM can be decomposed into a sum of a completely positive map and a map of the formm→x*m+mx.
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Entropies of a semigroup of maps
Discrete and Continuous Dynamical Systems, 2004 The notion of topological entropy introduced originally for homeomorphisms admits several entropy-like invariants in the case of endomorphisms related to the noninvertibility of the map under study. The most known among them are the standard topological entropy, the preimage relation entropy, the preimage branch entropy, and the point entropy.
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On the semigroup of differentiable mappings [PDF]
Journal of the Australian Mathematical Society, 1969 The purpose of this paper is to improve a result in [2] on the automorphisms of the semigroup D = D(E) of all (Fréchet)-differentiable mappings of a real Banach space E into itself.
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Common fixed points for lipschitzian semigroup
Electronic Journal of Differential Equations, 2006 Lim and Xu [4] established a fixed point theorem for uniformly Lipschitzian mappings in metric spaces with uniform normal structure. Recently, Huang and Hong [1] extended hyperconvex metric space version of this theorem, by showing a common fixed point ...
Samir Lahrech +2 more
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, 2003 We review some of our results from the theory of product systems of Hilbert modules. We explain that the product systems obtained from a CP-semigroup in a paper by Bhat and Skeide and in a paper by Muhly and Solel are commutants of each other.
Hilbert Modules, Michael Skeide
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Permutations of a semigroup that map to inverses [PDF]
Semigroup Forum, 2013 14 ...
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Automata and automata mappings of semigroups
, 2015 6 ...
Plotkin, Boris, Plotkin, Tatjana
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Common fixed-points for equicontinuous semigroups of mappings [PDF]
Proceedings of the American Mathematical Society, 1972 Let S be a semigroup of equicontinuous self maps of X, a compact Hausdorff space. It is shown that if S is left reversible (that is every pair of right ideals of S has nonempty intersection), then there is a compact group G of homeomorphisms of a retract Y of X with the property that S has a common fixed-point in X if and only if G has a common fixed ...
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Coverings of solenoids and automorphisms of semigroup C*-algebras
Учёные записки Казанского университета: Серия Физико-математические науки, 2018 The paper deals with finite-sheeted covering mappings onto the C*-adic solenoids and limit endomorphisms of semigroup C*-algebras. The aim of our exposition is two-fold: firstly, to present the results concerning the above-mentioned mappings and ...
R.N. Gumerov
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Characterization of quasi idempotent in semigroups of full contraction mappings
Proceedings of the Nigerian Society of Physical SciencesLet Tn be the semigroup of full transformation of a finite set and let Xn = {1, 2, · · · , n}. A transformation α : Domα ⊂ Xn →Im(α) ⊂ Xn is said to be full or total transformation if Domα = Xn.
Adediran Dauda Adeshola +3 more
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