Results 21 to 30 of about 12,676 (312)

Common fixed point theorems for commuting k-uniformly Lipschitzian mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We give a common fixed point existence theorem for any sequence of commuting k-uniformly Lipschitzian mappings (eventually, for k=1 for any sequence of commuting nonexpansive mappings) defined on a bounded and complete metric space (X,d) with uniform ...
M. Elamrani, A. B. Mbarki, B. Mehdaoui
doaj   +1 more source

On strong commutativity‐preserving maps [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
We identify some strong commutativity‐preserving maps on semiprime rings. Among other results, we prove the following. (i) A centralizing homomorphism f of a semiprime ring R onto itself is strong commutativity preserving. (ii) A centralizing antihomomorphism f of a 2‐torsion‐free semiprime ring R onto itself is strong commutativity preserving.
openaire   +2 more sources

Some New Common Fixed Point Theorems under Strict Contractive Conditions in G-Metric Spaces

open access: yesJournal of Applied Mathematics, 2012
We introduce some new types of pairs of mappings (𝑓,𝑔) on G-metric space called G-weakly commuting of type (𝐴𝑓) and G-R-weakly commuting of type (𝐴𝑓).
Zead Mustafa
doaj   +1 more source

Common fixed point theorems for compatible mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
By using a compatibility condition due to Jungck we establish some common fixed point theorems for four mappings on complete and compact metric spaces These results also generalize a theorem of Sharma and Sahu.
Kenan Taş   +2 more
doaj   +1 more source

Representations of quivers and mixed graphs [PDF]

open access: yes, 2013
This is a survey article for "Handbook of Linear Algebra", 2nd ed., Chapman & Hall/CRC, 2014. An informal introduction to representations of quivers and finite dimensional algebras from a linear algebraist's point of view is given.
Horn, Roger A., Sergeichuk, Vladimir V.
core   +1 more source

Real submanifolds of maximum complex tangent space at a CR singular point [PDF]

open access: yes, 2014
We study a germ of real analytic $n$-dimensional submanifold of ${\mathbf C}^n$ that has a complex tangent space of maximal dimension at a CR singularity. Under the condition that its complexification admits the maximum number of deck transformations, we
Gong, Xianghong, Stolovitch, Laurent
core   +8 more sources

Coexistence in interval effect algebras [PDF]

open access: yes, 2010
Motivated by the notion of coexistence of effect-valued observables, we give a characterization of coexistent subsets of interval effect ...
Jenča, Gejza
core   +1 more source

Common fixed point theorems for two and three mappings

open access: yesFixed Point Theory and Applications, 2020
In this paper, we provide common fixed point theorems for two and three commuting mappings which generalize Darbo’s fixed point theorem. An explicit example is given for illustration.
Meryeme El Harrak, Ahmed Hajji
doaj   +1 more source

Some fixed point theorems for compatible maps

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1993
A collection of fixed point theorems is generalized by replacing hypothesized commutativity or weak commutativity of functions involved by compatibility.
G. jungck, B. E. Rhoades
doaj   +1 more source

Stability of commuting maps and Lie maps

open access: yesStudia Mathematica, 2012
info:eu-repo/semantics ...
Alaminos, J.   +3 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy