Temat: continuity - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: On some forms of quasi-uniform convergence of transfinite sequence of multifunctions
Autorzy:: Przemski, Marian
Powiązania:: https://bibliotekanauki.pl/articles/745194.pdf
Data publikacji:: 2010
Wydawca:: Polskie Towarzystwo Matematyczne
Tematy:: convergences
quasiuniform
multifunctions
generalized continuity
hyperspaces
cluster sets
Opis:: In this paper we introduce various forms of convergence of transfinite sequences of multifunctions with values in a quasi-uniform space. We also study some weak types of continuity for such multifunctions. Any such sequence of multifunctions generates the sequence of the sets of weak types of continuity points and the sequence of various types of cluster sets of members of such sequence. We study the connection between convergence of a transfinite sequences of multifunctions and convergence of the corresponding sequences of the sets of the weak continuity points and the sequences of cluster sets. Some of the presented results concern of general nets of multifunctions.
Źródło:: Commentationes Mathematicae; 2010, 50, 1
0373-8299
Pojawia się w:: Commentationes Mathematicae
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Approximation of functions of two variables by modified Szasz-Mirakyan operators
Autorzy:: Herzog, Monika
Powiązania:: https://bibliotekanauki.pl/articles/745477.pdf
Data publikacji:: 2012
Wydawca:: Polskie Towarzystwo Matematyczne
Tematy:: Linear positive operators
Bessel function
Modulus of continuity
Degree of approximation
Opis:: In this paper we study approximative properties of modified Szasz-Mirakyan operators for functions of two variables from polynomial weight spaces. We present some direct theorems giving a degree of approximation for these operators.
Źródło:: Commentationes Mathematicae; 2012, 52, 1
0373-8299
Pojawia się w:: Commentationes Mathematicae
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Asymptotic of weak solutions for linear elliptic nonlocal Robin problem without Dini-continuity condition in a plane angle domain
Autorzy:: Żyjewski, Krzysztof
Powiązania:: https://bibliotekanauki.pl/articles/960139.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Matematyczne
Tematy:: boundary value problems
weak solutions
second order elliptic linear equations
nonlocal Robin problem
corner points
Dini-continuity
Opis:: We investigate the behaviour of weak solutions to the nonlocal Robin problem for linear elliptic divergence second order equations in a neighbourhood of the boundary corner point. We find the exponent of the solution decreasing rate under the assumption that the leading coefficients of the equations do not satisfy the Dini-continuity condition.
Źródło:: Commentationes Mathematicae; 2017, 57, 1
0373-8299
Pojawia się w:: Commentationes Mathematicae
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Approximation by bivariate Mazhar-Totik operators
Autorzy:: Wachnicki, Eugeniusz
Powiązania:: https://bibliotekanauki.pl/articles/746253.pdf
Data publikacji:: 2010
Wydawca:: Polskie Towarzystwo Matematyczne
Tematy:: positive linear operator
rate of convergence
Voronovskaya theorem
modulus of continuity
modulus of smoothness
mixed modulus of smoothness
limit problem
Opis:: The aim of this paper is to study a bivariate version of the operator investigated in [2], [4]. We shall present Voronovskaya type theorem and theorems giving a rate of convergence of this operator. Some applications for the limit problem are indicated.
Źródło:: Commentationes Mathematicae; 2010, 50, 2
0373-8299
Pojawia się w:: Commentationes Mathematicae
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: On Banach spaces of regulated functions
Autorzy:: Drewnowski, Lech
Powiązania:: https://bibliotekanauki.pl/articles/1912831.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Matematyczne
Tematy:: Regulated function
left- and right-continuity
Banach spaces
\(c_0(S)\) spaces
triple Sorgenfrey line
Alexandrov--Urysohn constructions
\(C(K)\) spaces, isomorphisms
Opis:: For a relatively compact subset \(S\) of the real line \(\BR\), let \(R(S)\) denote the Banach space (under the sup norm) of all regulated scalar functions defined on \(S\). The purpose of this paper is to study those closed subspaces of \(R(S)\) that consist of functions that are left-continuous, right-continuous, continuous, and have a (two-sided) limit at each point of some specified disjoint subsets of \(S\). In particular, some of these spaces are represented as \(C(K)\) spaces for suitable, explicitly constructed, compact spaces \(K\).
Źródło:: Commentationes Mathematicae; 2017, 57, 2
0373-8299
Pojawia się w:: Commentationes Mathematicae
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 6.

Tytuł:: Local structure of generalized Orlicz−Lorentz function spaces
Autorzy:: Kolwicz, Paweł
Powiązania:: https://bibliotekanauki.pl/articles/746354.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Matematyczne
Tematy:: symmetric spaces
symmetrization of the Banach function space
generalized Orlicz-Lorentz space
Musielak-Orlicz space
monotonicity properties
order continuity
local structure of a separated point
Opis:: We study the local structure of a separated point \(x\) in the generalized Orlicz-Lorentz space \(\Lambda ^{\varphi }\) which is a symmetrization of the respective Musielak-Orlicz space \(L^{\varphi }\). We present criteria for an \(LM\) point and a \(\mathit{UM}\) point, and sufficient conditions for a point of order continuity and an \(\mathit{LLUM}\) point, in the space \(\Lambda ^{\varphi }\). We prove also a characterization of strict monotonicity of the space \(\Lambda ^{\varphi }\).
Źródło:: Commentationes Mathematicae; 2015, 55, 2
0373-8299
Pojawia się w:: Commentationes Mathematicae
Dostawca treści:: Biblioteka Nauki

Artykuł

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