Results 11 to 20 of about 12,683 (242)

Continuous selections of multivalued mappings [PDF]

, 2014
This survey covers in our opinion the most important results in the theory of continuous selections of multivalued mappings (approximately) from 2002 through 2012.
A. Askoy, A. Brown, A. Fryszkowski, A. Karassev, A. Kisielewicz, A. L. Brown, A. Smajdor, B. Alleche, Ch. Horvath, Ch. Horvath, D. Repovš, D. Repovš, D. Repovš, D. Repovš, D. Repovš, D. Repovš, D. Repovš, D. Repovš, D. Repovš, E. A. Michael, E. A. Michael, E. A. Michael, E. A. Michael, E. A. Michael, E. A. Michael, E. A. Michael, E. A. Michael, E. A. Michael, E. Livshits, E. Shchepin, E. Tymchatyn, F. Blasi, F. Blasi, F. Blasi, F. Deutsch, F. Levy, G. Ivanov, G. Ivanov, G. Mägerl, H. Ben-El-Mechaiekh, H. Corson, H. Wicke, I. Blum, I. Ivanšić, I. Shishkov, I. Shishkov, I. Shishkov, I. Shishkov, J. J. Sánchez-Gabites, J. Markin, J. Markin, J. Mill, J. Vial, K. Ryutin, K. Ryutin, M. Balashov, M. Balashov, M. Balashov, M. Balashov, M. Choban, M. Choban, M. Choban, M. Khamsi, M. Vel, M. Zarichnyi, M. Zippin, N. Brodsky, N. Makala, P. Saveliev, P. Semenov, P. V. Semenov, R. Bielawski, S. Konyagin, S. Nedev, T. Banakh, T. Dobrowolski, T. Dobrowolski, T. Przymusinski, T. Yamauchi, T. Yamauchi, T. Yamauchi, T. Yamauchi, V. G. Gutev, V. G. Gutev, V. G. Gutev, V. G. Gutev, V. G. Gutev, V. Gorokhovik, V. Gutev, V. Gutev, V. Gutev, V. Gutev, V. Gutev, V. Gutev, V. Protasov, V. V. Fillipov, V. V. Fillipov, V. V. Fillipov, V. V. Uspenskii, X. Ding, X. Wu   +100 more
core   +2 more sources

Identification of discontinuous parameters in double phase obstacle problems

Advances in Nonlinear Analysis, 2022
In this article, we investigate the inverse problem of identification of a discontinuous parameter and a discontinuous boundary datum to an elliptic inclusion problem involving a double phase differential operator, a multivalued convection term (a ...
Zeng Shengda, Bai Yunru, Winkert Patrick, Yao Jen-Chih   +3 more
doaj   +1 more source

On fixed points of some multivalued mappings under certain function classes

Karpatsʹkì Matematičnì Publìkacìï, 2023
It is well known that the Banach contraction principle implies the existence of fixed points of single-valued mappings. On the other hand, S.B. Nadler has solved the problem that guarantees the existence of fixed point for multivalued mapping.
V. Karakaya, D. Sekman
doaj   +1 more source

Diametrically Contractive Multivalued Mappings [PDF]

Fixed Point Theory and Applications, 2007
AbstractDiametrically contractive mappings on a complete metric space are introduced by V. I. Istratescu. We extend and generalize this idea to multivalued mappings. An easy example shows that our fixed point theorem is more applicable than a former one obtained by H. K. Xu.
S. Dhompongsa, H. Yingtaweesittikul
openaire   +4 more sources

Hybrid Algorithm of Fixed Point for Weak Relatively Nonexpansive Multivalued Mappings and Applications

Abstract and Applied Analysis, 2012
The purpose of this paper is to present the notion of weak relatively nonexpansive multi-valued mapping and to prove the strong convergence theorems of fixed point for weak relatively nonexpansive multivalued mappings in Banach spaces.
Jingling Zhang, Yongfu Su, Qingqing Cheng   +2 more
doaj   +1 more source

On the Weak Relatively Nonexpansive Multivalued Mappings in Banach Spaces

Abstract and Applied Analysis, 2012
In recent years, the definition of relatively nonexpansive multivalued mapping and the definition of weak relatively nonexpansive multivalued mapping have been presented and studied by many authors.
Yongfu Su
doaj   +1 more source

On an Invariant Set in the Heat Conductivity Problem with Time Lag

Abstract and Applied Analysis, 2013
The problems of weak and strong invariance of a constant multivalued mapping with respect to the heat conductivity equation with time lag are studied. Sufficient conditions of weak and strong invariance of a given multivalued mapping are obtained.
M. Tukhtasinov, G. I. Ibragimov, N. O. Mamadaliev   +2 more
doaj   +1 more source

Fixed Points of Some Asymptotically Regular Multivalued Mappings Satisfying a Kannan-Type Condition

Axioms, 2021
In this paper, we establish some existence of fixed-point results for some asymptotically regular multivalued mappings satisfying Kannan-type contractive condition without assuming compactness of the underlying metric space or continuity of the mapping.
Pradip Debnath, Zoran D. Mitrović, Hari Mohan Srivastava   +2 more
doaj   +1 more source

Nonholonomic Mapping Principle for Classical Mechanics in Spaces with Curvature and Torsion. New Covariant Conservation Law for Energy-Momentum Tensor [PDF]

, 1997
The lecture explains the geometric basis for the recently-discovered nonholonomic mapping principle which specifies certain laws of nature in spacetimes with curvature and torsion from those in flat spacetime, thus replacing and extending Einstein's ...
A. Saa, B. A. Bilby, B. S. DeWitt, E. Kröner, E. Kröner, E. L. Stiefel, F. W. Hehl, F. W. Hehl, F. W. Hehl, H. Fuchs, H. Kleinert, H. Kleinert, H. Kleinert, H. Kleinert, H. Kleinert, H. Kleinert, H. Kleinert, H. Kleinert, H. Kleinert, H. Kleinert, H. Kleinert, H. Kleinert, Hagen Kleinert, J. A. Schouten, P. A. M. Dirac, P. Fiziev, P. P. Fiziev, R. Utiyama, R. Williams, S. Hojman, S. Weinberg, T. W. B. Kibble, V. de Sabbata   +32 more
core   +3 more sources

Existence of weak solutions to stochastic evolution inclusions [PDF]

, 2004
We consider the Cauchy problem for a semilinear stochastic differential inclusion in a Hilbert space. The linear operator generates a strongly continuous semigroup and the nonlinear term is multivalued and satisfies a condition which is more heneral than
De Fitte, Paul Raynaud, Jakubowski, Adam, Kamenskii, Mikhail   +2 more
core   +8 more sources