Sommaire

On Fefferman’s Non-existence Problems
Common Fixed Point Theorems of Meir and Keeler Type for Weakly Compatible Maps
On Quaternary Associative Operations
Common Fixed Point for Set and Single Valued Functions without Continuity and Compatibility
On Separation Axioms and Sequences
An Alternative Moving Frame for Tubular Surface around the Spacelike Curve with a Spacelike Binormal in Minkowski 3-Space
Remark on Some Functional Equations
Intuitionistic Fuzzy Strong Precompactness in Coker’s Sense
L-Ultrafilters, L-Sets and LC-Property
Two Coincidence and Fixed Point Theorems for Hybrid Strict Contractions
Best Approximations in Cone Metric Spaces
Relativistic Nonlinear Physics of the Lower Transversal Spaces and Consequences