Results 21 to 30 of about 303,948 (284)
Lorentz Transformation from Symmetry of Reference Principle [PDF]
, 2006 The Lorentz Transformation is traditionally derived requiring the Principle of Relativity and light-speed universality. While the latter can be relaxed, the Principle of Relativity is seen as core to the transformation.
A. Einstein +5 more
core +3 more sources
Representation of functionals of Ito processes and their first exit times [PDF]
, 2010 The representation theorem is obtained for functionals of non-Markov processes and their first exit times from bounded domains. These functionals are represented via solutions of backward parabolic Ito equations. As an example of applications, analogs of
Dokuchaev, Nikolai
core +2 more sources
A Generalisation of Contraction Principle in Metric Spaces
Fixed Point Theory and Applications, 2009 Here we introduce a generalisation of the Banach contraction mapping principle. We show that the result extends two existing generalisations of the same principle. We support our result by an example.
Binayak S. Choudhury, P. N. Dutta
doaj +1 more source
Projective metrics and contraction principles for complex cones [PDF]
, 2008 In this article, we consider linearly convex complex cones in complex Banach spaces and we define a new projective metric on these cones. Compared to the hyperbolic gauge of Rugh, it has the advantage of being explicit, and easier to estimate.
Dubois, Loic
core +2 more sources
A Coupled Random Fixed Point Result With Application in Polish Spaces [PDF]
Sahand Communications in Mathematical Analysis, 2018 In this paper, we present a new concept of random contraction and prove a coupled random fixed point theorem under this condition which generalizes stochastic Banach contraction principle.
Rashwan Ahmed Rashwan +1 more
doaj +1 more source
Level 2.5 large deviations for continuous time Markov chains with time periodic rates
, 2018 We consider an irreducible continuous time Markov chain on a finite state space and with time periodic jump rates and prove the joint large deviation principle for the empirical measure and flow and the joint large deviation principle for the empirical ...
Bertini, L. +3 more
core +3 more sources
Two examples of non strictly convex large deviations [PDF]
, 2016 We present two examples of a large deviations principle where the rate function is not strictly convex. This is motivated by a model used in mathematical finance (the Heston model), and adds a new item to the zoology of non strictly convex large ...
De Marco, S, Jacquier, A, Roome, P
core +3 more sources
Completeness and the contraction principle [PDF]
Proceedings of the American Mathematical Society, 1983 We prove (something more general than) the result that a convex subset of a Banach space is closed if and only if every contraction of the space leaving the convex set invariant has a fixed point in that subset. This implies that a normed space is complete if and only if every contraction on the space has a fixed point.
openaire +1 more source
Generalization of the Banach contraction principle [PDF]
, 2013 We introduce the concept of shifting distance functions, and we establish a new fixed point theorem which generalizes the Banach contraction principle.
Berzig, Maher
core
Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?
FEBS Letters, EarlyView.This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes +3 more
wiley +1 more source