Results 11 to 20 of about 7,742 (177)

Attractors of Compactly Generated Semigroups of Regular Polynomial Mappings [PDF]

open access: yesComplexity, 2018
We investigate the metric space of pluriregular sets as well as the contractions on that space induced by infinite compact families of proper polynomial mappings of several complex variables.
Azza Alghamdi   +2 more
doaj   +5 more sources

Semigroup Actions of Expanding Maps [PDF]

open access: yesJournal of Statistical Physics, 2016
A few typos were corrected, Sections 8 and 9 were improved and a variational relation for the relative entropy has been included in Section ...
Maria Carvalho   +2 more
openaire   +4 more sources

Contractification of a Semigroup of Maps [PDF]

open access: yesProceedings of the American Mathematical Society, 1979
Let ( X , τ ) (X,\tau ) be a metrizable topological space, P ( τ ) \mathcal {P}(\tau ) be the family of all metrics on X whose metric topologies are τ \tau .
Ko, Hwei-Mei, Tan, Kok-Keong
openaire   +2 more sources

Spectral mapping theorems for differentiable $$C_0$$ semigroups [PDF]

open access: yesRendiconti del Circolo Matematico di Palermo Series 2, 2020
Let $(T(t))_{t\geq 0}$ be a $C_0$ semigroup on a Banach space $X$ with infinitesimal generator $A$. In this work, we give conditions for which the spectral mapping theorem $ _{*}(T(t))\backslash \{0\}=\{e^{ s}, \in _{*}(A)\}$ holds, where $ _*$ can be equal to the essential, Browder and Kato spectrum.
Boua, Hamid   +2 more
openaire   +2 more sources

On the semigroup of differentiable mappings (II) [PDF]

open access: yesGlasgow Mathematical Journal, 1972
In [2], K. D. Magill, Jr. has proved that every automorphism of the semigroup (with respect to composition) of all real-valued differentiable functions of a real variable is inner. The purpose of this paper is to generalize this fact to arbitrary finite-dimensional real Banach spaces.
Wood, G. R., Yamamuro, Sadayuki
openaire   +2 more sources

Common fixed points for semigroups of mappings [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
Let X be a compact convex subset of a strictly convex Banach space. Let S be a Hausdorff topological semigroup which is either left amenable or left reversible. Then for any generalised nonexpansive (jointly) continuous action of S on X, X contains a common fixed point of S.
Lau, Anthony To-Ming, Wong, Chi Song
openaire   +1 more source

Semigroups of constant maps [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1985
AbstractIn this paper “a map” denotes an arbitrary (everywhere defined, or partial, or even multi-valued) mapping. A map is constant if any two elements belonging to its domain have precisely the same images under this map. We characterize those semigroups which can be isomorphic to semigroups of constant maps or to involuted semigroups of constant ...
openaire   +2 more sources

Nonlinear ergodic theorems for asymptotically almost nonexpansive curves in a Hilbert space

open access: yesAbstract and Applied Analysis, 2000
We introduce the notion of asymptotically almost nonexpansive curves which include almost-orbits of commutative semigroups of asymptotically nonexpansive type mappings and study the asymptotic behavior and prove nonlinear ergodic theorems for such curves.
Gang Li, Jong Kyu Kim
doaj   +1 more source

A note on Kakutani type fixed point theorems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
We present Kakutani type fixed point theorems for certain semigroups of self maps by relaxing conditions on the underlying set, family of self maps, and the mappings themselves in a locally convex space setting.
A. R. Khan, N. Hussain, L. A. Khan
doaj   +1 more source

A General Class of Differential Hemivariational Inequalities Systems in Reflexive Banach Spaces

open access: yesMathematics, 2021
We consider an abstract system consisting of the parabolic-type system of hemivariational inequalities (SHVI) along with the nonlinear system of evolution equations in the frame of the evolution triple of product spaces, which is called a system of ...
Lu-Chuan Ceng   +3 more
doaj   +1 more source

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