Zobrazeno 1 - 10 of 27 pro vyhledávání: '"Witold Wnuk"'
2
100 lat matematyki na Uniwersytecie w Poznaniu 1919-2019
Autor: Witold Wnuk, Lech Maligranda
Książka przedstawia historię matematyki na Uniwersytecie w Poznaniu od jego powstania po rok 2019. Po krótkim omówieniu losów Polski w tym czasie i dziejów Uniwersytetu, szczegółowo analizowany jest rozwój matematyki na tej uczelni. Obficie
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd4551c170de988bc29d71efe99543e4
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-87259
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3
Some Remarks on the Algebraic Sum of Ideals and Riesz Subspaces
Autor: Witold Wnuk
Publikováno v: Canadian Mathematical Bulletin. 56:434-441
Following ideas used by Drewnowski and Wilansky we prove that if I is an infinite dimensional and infinite codimensional closed ideal in a complete metrizable locally solid Riesz space and I does not contain any order copy of ℝN then there exists a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::397e2f780ca960d8e06e0b731ec2808f
https://doi.org/10.4153/cmb-2011-151-0
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4
Copies of \(\mathbb R^{\mathbb N}\) in F-lattices
Autor: Witold Wnuk
Publikováno v: Commentationes Mathematicae. 56
Modifying ideas presented in [14] we prove that a complete metrizable locally solid Riesz space \(E\) contains a linear subspace linearly homeomorphic to \(\mathbb R^{\mathbb N}\) iff \(E\) contains a sublattice order isomorphic to \(\mathbb R^{\math
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12c5ff4d01ae3f310739a5b5ce84fd7b
https://doi.org/10.14708/cm.v56i2.1558
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7
On discrete and continuous quotient Riesz spaces
Autor: Witold Wnuk
Publikováno v: Positivity. 15:73-85
Order properties of quotient Riesz spaces E/N(f) by null ideals N(f) are investigated. We show relationships between properties of a Riesz space E and its order dual E~ and properties of quotients E/N(f) where f runs over some subspaces of E~. A char
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31f6b390fd59de2aa294cc3d81765247
https://doi.org/10.1007/s11117-009-0042-3
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8
The strong Schur property in Banach lattices
Autor: Witold Wnuk
Publikováno v: Positivity. 13:435-441
We prove that in the class of discrete Banach lattices the strong Schur property is equivalent to the disjoint strong Schur property (Theorem 3.1). Roughly speaking the strong Schur property holds iff an appropriate condition concerning sequences wit
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1f1cc540a682c29ed4be7797fa7736b2
https://doi.org/10.1007/s11117-008-2252-5
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9
On the Levi and Lebesgue properties
Autor: Błażej Wiatrowski, Witold Wnuk
Publikováno v: Indagationes Mathematicae. 18(4):641-650
The paper is devoted to a question if the Levi property is preserved by direct sums and quotients. The three-space problem for the Levi and Lebesgue properties in topological Riesz spaces is also investigated.
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10
Landau-type theorem for variable Lebesgue spaces
Autor: Lech Maligranda, Witold Wnuk
We describe, using elementary methods, the Köthe dual of the variable Lebesgue spaces L^{p(.)}, called also Nakano spaces, independenly for p(.) \in (1, \infty) and p(.) \in (0, 1). The case when $p(.) \in [1, \infty]$ is also included. Validerad; 2
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::976e48a7c739d22e2d1536fc3cac3920
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-60326
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