Results 81 to 90 of about 2,901,259 (273)
Commuting functions with no common fixed point [PDF]
Transactions of the American Mathematical Society, 1969 Introduction. Let f and g be continuous functions mapping the unit interval I into itself which commute under functional composition, that is, f(g(x))=g(f(V)) for all x in I. In 1954 Eldon Dyer asked whetherf and g must always have a common fixed point, meaning a point z in I for which f(z) =z=g(z). A. L.
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Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
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Fixed and common fixed points for $(psi,varphi)$-weakly contractive mappings in $b$-metric spaces [PDF]
Sahand Communications in Mathematical Analysis, 2017 In this paper, we give a fixed point theorem for $(psi,varphi)$-weakly contractive mappings in complete $b$-metric spaces. We also give a common fixed point theorem for such mappings in complete $b$-metric spaces via altering functions. The given results
Hamid Faraji, Kourosh Nourouzi
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Common Fixed Points, Invariant Approximation and Generalized Weak Contractions
International Journal of Mathematics and Mathematical Sciences, 2012 Sufficient conditions for the existence of a common fixed point of generalized -weakly contractive noncommuting mappings are derived. As applications, some results on the set of best approximation for this class of mappings are obtained.
Sumit Chandok
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Some Remarks on Common Fixed Point Theorems
Journal of Mathematical Analysis and Applications, 1994 The author establishes several common fixed point theorems for compatible maps of a complete metric space using contractive conditions of Caristi type [\textit{J. Caristi}, Trans. Am. Math. Soc. 215, 241-251 (1976; Zbl 0305.47029)] and Hegedüs type [\textit{M. Hegedüs}, Acta Sci. Math. 42, 87-89 (1980; Zbl 0438.47057)].
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Common Fixed Points for Commuting Cournot Maps [PDF]
Real Analysis Exchange, 2003 The author studies the existence of common fixed points of two commuting Cournot maps on \([0,1]^2\). Extensions of results by \textit{J. R. Jachymski} [Proc. Am. Math. Soc. 124, 3229--3233 (1996; Zbl 0881.54043)] and \textit{G. F. Jungck} [Proc. Am. Math. Soc. 115, 495--499 (1992; Zbl 0771.54037)] to the Cournot case are given.
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Function‐driven design of a surrogate interleukin‐2 receptor ligand
FEBS Letters, EarlyView.Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang +9 more
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Common fixed points of maps on fuzzy metric spaces
International Journal of Mathematics and Mathematical Sciences, 1994 Following Grabiec's approach to fuzzy contraction principle, the purpose of this note is to obtain common fixed point theorems for asymptotically commuting maps on fuzzy metric spaces.
S. N. Mishra, Nilima Sharma, S. L. Singh
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Common Fixed Point Theorems for Contractive Maps
Journal of Mathematical Analysis and Applications, 1998 The author gives common fixed point theorems for a family of operators under minimal type commutativity and contractive conditions.
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Common fixed points under Lipschitz type condition [PDF]
Kathmandu University Journal of Science, Engineering and Technology, 1970 The present paper is aimed at obtaining common fixed point theorems for a pair of selfmaps satisfying nonexpansive or Lipschitz type condition by using the notion of pointwise R- weak commutativity but without assuming the completeness of the space or continuity of the mappings involved. Mathematics Subject Classification: 54 H 25.
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