Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Bożena Piątek"'
Publikováno v:
Journal of Applied Mathematics and Computational Mechanics, Vol 16, Iss 1, Pp 7-18 (2017)
Externí odkaz:
https://doaj.org/article/d0f7d5d2fb0a49f3b8ce72182a88f58b
Publikováno v:
Journal of Applied Mathematics and Computational Mechanics, Vol 15, Iss 1, Pp 5-15 (2016)
Externí odkaz:
https://doaj.org/article/440ea7440785477fbc7596dae91228fb
Autor:
Bożena Piątek
Publikováno v:
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, Vol 13, Iss 1, Pp 65-76 (2014)
In this work we consider two hyperconvex diversities (or hyperconvex metric spaces) (X; dX) and (Y; dY ) with nonempty intersection are given and we wonder whether there is a natural way to glue them so that the new glued diversity (or metric space)
Externí odkaz:
https://doaj.org/article/d4e7bb0fc10c430bab331643b03732ba
Autor:
Bożena Piątek
Publikováno v:
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, Vol 9, Iss 1, Pp 79-85 (2010)
We introduce asymptotic cyclic contractions as a generalization of cyclic contractions and this new type of mappings is considered under the recently introduced property UC for pairs of subsets of metric spaces. We show that there can be more than on
Externí odkaz:
https://doaj.org/article/f52099d68e9146a185fe399399bba9f0
Autor:
Bożena Piątek
Publikováno v:
Opuscula Mathematica, Vol 29, Iss 1, Pp 81-88 (2009)
The generalization of the Polovinkin theorem is studied.
Externí odkaz:
https://doaj.org/article/1a3e91367c3440ae8a2b1a241f2504a3
Autor:
Bożena Piątek
Publikováno v:
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, Vol 7, Iss 1, Pp 5-13 (2008)
We present an example of the Riemann integrable multifunction which is discontinuous at each point with respect to the Hausdorff metric. The constructed multifunction is neither lower nor upper semi-continuous.
Externí odkaz:
https://doaj.org/article/8d69deeced7f424388e03ed38e27a4aa
Autor:
Bożena Piątek
Publikováno v:
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, Vol 5, Iss 1, Pp 77-86 (2006)
We investigate some properties of {$*$}-concave and convex multifunctions on the real line with convex bounded closed values. In particularly we consider the Hadamard inequality and the Hardy--Little-wood--P'olya majorization theory in the case of mu
Externí odkaz:
https://doaj.org/article/a81e73ab8c4d4be29f1510d41aa89ef9
Publikováno v:
Fixed Point Theory and Applications, Vol 2010 (2010)
We study the existence of fixed points and convergence of iterates for asymptotic pointwise contractions in uniformly convex metric spaces. We also study the existence of fixed points for set-valued nonexpansive mappings in the same class of spaces.
Externí odkaz:
https://doaj.org/article/3a8d09d4f22640a18534425d4b34a0b6
Publikováno v:
Geometriae Dedicata. 202:69-80
This paper focuses on the relation between the fixed point property for continuous mappings and a discrete lion and man game played in a strongly convex domain. Our main result states that in locally compact geodesic spaces, the compactness of the do
Publikováno v:
Open Mathematics, Vol 15, Iss 1, Pp 477-485 (2017)
The aim of the paper is to present the binomial transformation formulae of Fibonacci numbers scaled by complex multipliers. Many of these new and nontrivial relations follow from the fundamental properties of the so-called delta-Fibonacci numbers def