Coincidence theorems for nonlinear hybrid contractions.
Coincidence theorems for set-valued maps with g-kkm property on generalized convex space
In this paper, a set-valued mapping with G-KKM property is defined and a generalization of minimax theorem for set-valued maps with G-KKM property on generalized convex space is established. As a consequence of this results we verify the coincidence theorem for set-valued maps with G-KKM property on G-convex space. Finally, we apply our results to the best approximation problem and fixed point problem.
Coincidence theorems for some multivalued mappings.
Coincidence theorems, generalized variational inequality theorems, and minimax inequality theorems for the -mapping on -convex spaces.
Combinatorial lemmas for polyhedrons
We formulate general boundary conditions for a labelling to assure the existence of a balanced n-simplex in a triangulated polyhedron. Furthermore we prove a Knaster-Kuratowski-Mazurkiewicz type theorem for polyhedrons and generalize some theorems of Ichiishi and Idzik. We also formulate a necessary condition for a continuous function defined on a polyhedron to be an onto function.
Combinatorial lemmas for polyhedrons I
We formulate general boundary conditions for a labelling of vertices of a triangulation of a polyhedron by vectors to assure the existence of a balanced simplex. The condition is not for each vertex separately, but for a set of vertices of each boundary simplex. This allows us to formulate a theorem, which is more general than the Sperner lemma and theorems of Shapley; Idzik and Junosza-Szaniawski; van der Laan, Talman and Yang. A generalization of the Poincaré-Miranda theorem is also derived.
Combinatorics of ideals --- selectivity versus density
This note is devoted to combinatorial properties of ideals on the set of natural numbers. By a result of Mathias, two such properties, selectivity and density, in the case of definable ideals, exclude each other. The purpose of this note is to measure the ``distance'' between them with the help of ultrafilter topologies of Louveau.
Comments concerning flows near compact invariant sets
Comments on a paper of Pachpatte
Comments on the paper by Gordji and Baghani entitled “A generalization of Nadler's fixed point theorem".
Comments on the papers “Arch Math. (Brno), 42 (2006), 51–58”, “Thai J. Math., 3 (2005), 63–70” and “Math. Communications 13 (2008), 85–96”.
Common coincidence points of -weakly commuting maps.
Common coupled fixed point theorems for contractive mappings in fuzzy metric spaces.
Common fixed point and approximation results for noncommuting maps on locally convex spaces.
Common Fixed Point of Continous Mappings in Metric Spaces.
Common Fixed Point Of Continuous Mappings In Metric Spaces
Common fixed point of multivalued generalized -weak contractive mappings.
Common fixed point of self-maps in intuitionistic fuzzy metric spaces
Common fixed point result for two self-maps in -metric spaces
Common fixed point results and its applications to best approximation in ordered semi-convex structure.