Results 81 to 90 of about 1,104,947 (264)

Lefschetz fixed point theorem for digital images

open access: yes, 2013
In this article we study the fixed point properties of digital images. Moreover, we prove the Lefschetz fixed point theorem for a digital image. We then give some examples about the fixed point property.
Ozgur Ege, Ismet Karaca
semanticscholar   +1 more source

A fixed point theorem for distributions

open access: yesStochastic Processes and their Applications, 1992
The author studies, in a systematic form, the contractive behavior of the map \(S\) of distributions to distributions \(S(F)\overset{\mathcal D}=\sum_ i T_ i X_ i+C\), \((C,T=(T_ 1,T_ 2,\dots))\), \(X_ i\) are independent random variables with distribution function \(F\). Further the author obtains the higher and exponential moments of the fixed point.
openaire   +2 more sources

A fixed-point theorem for trees [PDF]

open access: yesBulletin of the American Mathematical Society, 1941
Not ...
openaire   +3 more sources

Nonlinear Inequality, Fixed Point and NashEquilibrium [PDF]

open access: yes
In this paper, we give new sufficient conditions for the existence of a solution of theg-maximum equality. As a consequence, we prove a new fixed point theorem.
Moussa Larbani   +2 more
core  

FIXED POINT THEOREM ON PARTIAL METRIC SPACES INVOLVING RATIONAL EXPRESSIONS

open access: yes, 2013
We establish a fixed point theorem involving a rational expression in a complete partial metric space. Our result generalizes a well-known result in (usual) metric spaces. Also, we introduce an example to illustrate the usability of our result.
E. Karapınar, W. Shatanawi, K. Tas
semanticscholar   +1 more source

Existence of Perfect Equilibria: A Direct Proof [PDF]

open access: yes
We formulate and prove a modification of Eilenberg-Montgomery fixed-point theorem, which is a generalization of Kakutani’s theorem. It enables us to provide a direct proof of the existence of perfect equilibria in finite normal form games and extensive ...
I. Topolyan
core  

Some new generalizations of Mizoguchi-Takahashi type fixed point theorem

open access: yes, 2013
In the light of the paper of Hasanzade Asl et al. (Fixed Point Theory Appl. 2012:212, 2012, doi:10.1186/1687-1812-2012-212), we obtain a fixed point theorem for multivalued mappings on a complete metric space.
Gülhan Minak, I. Altun
semanticscholar   +1 more source

A fixed point theorem for set-valued quasi-contractions in b-metric spaces

open access: yesFixed Point Theory and Applications, 2012
In this article, we give a fixed point theorem for set-valued quasi-contraction maps in b-metric spaces. This theorem extends, unifies and generalizes several well known comparable results in the existing literature.
H. Aydi   +3 more
semanticscholar   +1 more source

A Generalization of Kannan's Fixed Point Theorem

open access: yesFixed Point Theory and Applications, 2009
In order to observe the condition of Kannan mappings, we prove a generalization of Kannan's fixed point theorem. Our theorem involves constants and we obtain the best constants to ensure a fixed point.
Yusuke Enjouji   +2 more
doaj   +1 more source

A Short And Constructive Proof of Tarski's Fixed-Point Theorem [PDF]

open access: yes
I give short and constructive proofs of Tarski's fixed-point theorem, and of a much-used extension of Tarski's fixed-point theorem to set- valued maps.tarski, fixed-point theorem, supermodular, supermodular games, strategic complementarities, equilibrium
Federico Echenique
core  

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