Results 251 to 260 of about 357,854 (283)

On the Meaning of Local Symmetries: Epistemic-ontological Dialectics. [PDF]

Found Phys
François J, Ravera L.
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High-resolution electron-multi-ion coincidence set-up for gas-phase experiments in the tender and hard X-ray range. [PDF]

J Synchrotron Radiat
Kukk E, Vacheresse R, Ismail I, Marchenko T, Guillemin R, Piancastelli MN, Simon M, Travnikova O.   +7 more
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Recent advances in radionuclide medical imaging techniques. [PDF]

Front Med (Lausanne)
Xu S, Liu G, Wei Q, Liu H, Wu J, Liu Y, He ZX.   +6 more
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Coincidence Points and Generalized Coincidence Points of Two Set-Valued Mappings

Proceedings of the Steklov Institute of Mathematics, 2020
Let $(X,\rho_X)$ and $(Y,\rho_Y)$ be metric spaces and $G_i$, $i=1,2$ be mappings from $X$ to the collection of nonempty closed subsets of $Y$. Recall that a point $\xi\in X$ is called a coincidence point of $G_1$ and $G_2$ if $G_1(\xi)\cap G_2(\xi)\ne \emptyset$ and a generalized coincidence point if $\text{dist}_Y(G_1(\xi),G_2(\xi))=0$.
Arutyunov, A. V., Zhukovskiy, E. S., Zhukovskiy, S. E.   +2 more
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Around metric coincidence point theory

Studia Universitatis Babes-Bolyai Matematica, 2023
Let $(X,d)$ be a complete metric space, $(Y,\rho)$ be a metric space and $f,g:X\to Y$ be two mappings. The problem is to give metric conditions which imply that, $C(f,g):=\{x\in X\ |\ f(x)=g(x)\}\not=\emptyset$. In this paper we give an abstract coincidence point result with respect to which some results such as of Peetre-Rus (I.A.
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A coincidence point theorem for densifying mappings

Publicationes Mathematicae Debrecen, 1994
The main result is an interesting coincidence point theorem for densifying maps. Several corollaries are also derived. The main result unifies and extends several known results. To illustrate the theorem a suitable example is given.
Khan, M. S., Rao, K. P. R.
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Kantorovich’s Fixed Point Theorem in Metric Spaces and Coincidence Points

Proceedings of the Steklov Institute of Mathematics, 2019
The authors prove existence and uniqueness of fixed points of a self-mapping on a complete metric space, generalizing and improving the well-known Kantorovich's fixed point theorem in the setting of Banach spaces. Besides of a standard self-mapping, the authors also obtain coincidence point theorems for set-valued mappings on metric spaces.
Arutyunov A.V., Zhukovskiy E.S., Zhukovskiy S.E.   +2 more
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Coincidence points, generalized -nonexpansive multimaps, and applications

Nonlinear Analysis: Theory, Methods & Applications, 2007
Let \((D,d)\) be a metric space, \(CL(D)\) the family of all nonempty closed subsets of \(D\) endowed with the generalized Hausdorff metric \(H\), \(I:D\to D\) and \(T:D\to CL(D)\). In the first part of the paper, the authors study the existence of coincidence points and common fixed points of the pair \((I,T)\).
Al-Thagafi, M. A., Shahzad, Naseer
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ON POINTS OF COINCIDENCE OF TWO MAPPINGS

Mathematics of the USSR-Sbornik, 1981
This paper is devoted to the coincidence theory of two continuous mappings.A definition is given, in cohomological terms, of the coincidence index of two continuous mappings , where and are connected (not necessarily compact), orientable, -dimensional topological manifolds without boundary, is a compact mapping and is a proper mapping.Invariance ...
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Points where univalent functions may coincide

Complex Variables, Theory and Application: An International Journal, 1985
Let be a Blaschke sequence of points in the unit disk, with , such that converges to a point ζon the unit circle. We prove that if then there exists a pair of bounded univalent functions f and g, with f(0)=g(0)=0 and f′(0)=g′(0)=1, such that f(z)=g(z) if and only if .This result, and another slight extension of this result, gives a partial solution to ...
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