Results 11 to 20 of about 349,839 (123)

On the structure of the set of coincidence points

open access: yesSbornik: Mathematics, 2015
We consider the set of coincidence points for two maps between metric spaces. Cardinality, metric and topological properties of the coincidence set are studied. We obtain conditions which guarantee that this set (a) consists of at least two points; (b) consists of at least n points; (c) contains a countable subset; (d) is uncountable.
Arutyunov A.V., Gel'man B.D.
openaire   +4 more sources

Coincidence points of mappings in Banach spaces [PDF]

open access: yesFixed Point Theory, 2020
In this article we prove an existence theorem for coincidence points of mappings in Banach spaces. This theorem generalizes the Kantorovich fixed point theorem.
openaire   +3 more sources

Coincident-point rigidity in normed planes

open access: yesArs Mathematica Contemporanea, 2023
A bar-joint framework $(G,p)$ is the combination of a graph $G$ and a map $p$ assigning positions, in some space, to the vertices of $G$. The framework is rigid if every edge-length-preserving continuous motion of the vertices arises from an isometry of the space.
Dewar, Sean   +2 more
openaire   +3 more sources

Self-motions of pentapods with linear platform [PDF]

open access: yes, 2015
We give a full classification of all pentapods with linear platform possessing a self-motion beside the trivial rotation about the platform. Recent research necessitates a contemporary and accurate re-examination of old results on this topic given by ...
Nawratil, Georg, Schicho, Josef
core   +1 more source

A coincidence point theorem and related results

open access: yesApplied Mathematics Letters, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tarafdar E.U., Watson P.J.
openaire   +4 more sources

Coincidence Theorem and Saddle Point Theorem [PDF]

open access: yesProceedings of the American Mathematical Society, 1986
We discuss Browder’s coincidence theorem and derive a saddle point theorem from it.
openaire   +1 more source

N=1 Mirror Symmetry and Open/Closed String Duality [PDF]

open access: yes, 2001
We show that the exact N=1 superpotential of a class of 4d string compactifications is computed by the closed topological string compactified to two dimensions. A relation to the open topological string is used to define a special geometry for N=1 mirror
Mayr, P.
core   +3 more sources

Localized intersection of currents and the Lefschetz coincidence point theorem

open access: yes, 2015
We introduce the notion of a Thom class of a current and define the localized intersection of currents. In particular we consider the situation where we have a smooth map of manifolds and study localized intersections of the source manifold and currents ...
Bisi, Cinzia   +3 more
core   +1 more source

Geometric and homotopy theoretic methods in Nielsen coincidence theory

open access: yes, 2006
In classical fixed point and coincidence theory the notion of Nielsen numbers has proved to be extremely fruitful. Here we extend it to pairs (f_1, f_2) of maps between manifolds of arbitrary dimensions. This leads to estimates of the minimum numbers MCC(
Koschorke, Ulrich
core   +4 more sources

A new approach on the stability analysis in ELKO cosmology [PDF]

open access: yes, 2015
In this work it has been developed a new approach to study the stability of a system composed by an ELKO field interacting with dark matter, which could give some contribution in order to alleviate the cosmic coincidence problem.
Jesus, J. F.   +2 more
core   +2 more sources

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