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Burtseva, E. & Maligranda, L. (2025). Boundedness of the generalized Riesz potential in central Morrey–Orlicz spaces. Colloquium Mathematicum, 179(2), 171-187
Open this publication in new window or tab >>Boundedness of the generalized Riesz potential in central Morrey–Orlicz spaces
2025 (English)In: Colloquium Mathematicum, ISSN 0010-1354, E-ISSN 1730-6302, Vol. 179, no 2, p. 171-187Article in journal (Refereed) Published
Abstract [en]

We investigate the boundedness of the generalized Riesz potential in central Morrey–Orlicz spaces. We also present necessary and sufficient conditions for the generalized Riesz potential to be finite under certain assumptions on the kernel.

Place, publisher, year, edition, pages
Institute of Mathematics, Polish Academy of Sciences, 2025
Keywords
generalized Riesz potential, fractional integrals, Orlicz functions, central Morrey-Orlicz spaces
National Category
Mathematical Analysis
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-115759 (URN)10.4064/cm9633-9-2025 (DOI)001609417000001 ()2-s2.0-105024868751 (Scopus ID)
Funder
The Royal Swedish Academy of Sciences, MG2023-0073
Note

Funder: Poznań University of Technology (0213/SBAD/0122);

Full text license: CC BY

Available from: 2025-12-10 Created: 2025-12-10 Last updated: 2026-01-20
Maligranda, L. (2025). Henryk Hudzik (1945–2019). With memories and appreciation. In: Marek Wisła (Ed.), Function Spaces 13: In memory of Henryk Hudzik and Julian Musielak. Paper presented at Function Spaces 13, 8-12 July 2024, Poznań, Poland (pp. 127-174). Adam Mickiewicz University
Open this publication in new window or tab >>Henryk Hudzik (1945–2019). With memories and appreciation
2025 (English)In: Function Spaces 13: In memory of Henryk Hudzik and Julian Musielak / [ed] Marek Wisła, Adam Mickiewicz University , 2025, p. 127-174Conference paper, Published paper (Other academic)
Abstract [en]

Henryk Hudzik was my friend and we wrote 8 joint papers in the years 1990–2004. So I feel obliged totell about him and a little about his mathematics. First, I will present the history of Hudzik’s life. I will alsorecall his scientific career with a doctorate in 1977, a habilitation in 1986 and a professorship from 1992. He worked at the University of Adam Mickiewicz in Poznań in the years 1972–2015. Hudzik’s research interests include functional analysis, in particular: the theory of function spaces, Banach lattices, the geometry of Banach spaces and its applications, operator theory, metric fixed point theory. The number of his publications includes over 220 research papers, 3 chapters in monographs and several popular science and review papers. I will mention three of his most important papers, in my opinion.

In the years 1986–2020 I worked outside Poland, but we met many times in Poznań and other countries, which I will show in many joint photos.

Place, publisher, year, edition, pages
Adam Mickiewicz University, 2025
National Category
History Mathematical sciences
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-114502 (URN)10.5281/zenodo.14996245 (DOI)
Conference
Function Spaces 13, 8-12 July 2024, Poznań, Poland
Note

Full text license: CC BY

Available from: 2025-09-01 Created: 2025-09-01 Last updated: 2025-10-21Bibliographically approved
Maligranda, L. & Niziołek, P. (2025). List Williama Fellera do Józefa Marcinkiewicza z lipca 1939 roku: [Letter from William Feller to Józef Marcinkiewicz from July 1939]. Antiquitates Mathematicae, 19, 245-264
Open this publication in new window or tab >>List Williama Fellera do Józefa Marcinkiewicza z lipca 1939 roku: [Letter from William Feller to Józef Marcinkiewicz from July 1939]
2025 (Polish)In: Antiquitates Mathematicae, ISSN 1898-5203, E-ISSN 2353-8813, Vol. 19, p. 245-264Article in journal (Refereed) Published
Abstract [pl]

Józef Marcinkiewicz, będąc w Londynie w 1939 r. napisał list do Williama Fellera, pracującego w tym czasie w Sztokholmie. Niestety, listu, którego nadawcą był Marcinkiewicz nie udało się dotychczas odnaleźć, przetrwała natomiast datowana na 11 lipca 1939 r. odpowiedź Fellera. List ten zachował się zapewne tylko dlatego, że nie zastał adresata w Londynie i odesłano go do Polski z bardzo dużym opóźnieniem (zdaje się, że już po wojnie). Poza komentarzami dotyczącymi bieżących spraw politycznych i osobistych, zawiera on wynik autorstwa Józefa Marcinkiewicza, odnoszący się do obliczeń Haralda Craméra (opublikowanych w jego książce {\it Random Variables and Probability Distribution} z 1937 r.) i do tego lapidarny komentarz samego Fellera. List pisany jest po niemiecku. Załączamy jego fotokopię, tłumaczenie na język polski oraz komentarz do rezultatu matematycznego. Oryginał znajduje się w rękach prywatnych -- w archiwum spadkobierców rodziny Marcinkiewiczów.

Abstract [en]

Józef Marcinkiewicz, while in London in 1939, wrote a letter to William Feller, who was then working in Stockholm. Unfortunately, we have not found this letter of Marcinkiewicz's. On 11 July 1939, Feller replied to Marcinkiewicz. This letter probably survived only because it did not find Marcinkiewicz in London and was sent back to Poland with a very long delay (it seems that it was after the war). The letter, apart from comments on current political and personal matters, contains one result by Józef Marcinkiewicz, referring to the calculations of Harold Cramer (in his book {\it Random Variables and Probability Distribution} from 1937), and to this a brief commentary by Feller himself. The letter is written in German. We enclose the original of this letter, its translation into Polish and mathematical commentary. The original is in private hands-in the archive of the heirs of the Marcinkiewicz family.

Place, publisher, year, edition, pages
Polskie Towarzystwo Matematyczne, 2025
Keywords
History of mathematics and mathematicians, Józef Marcinkiewicz, William Feller, central limit theorem, Matematyka i matematycy XX wieku w Polsce, Józef Marcinkiewicz, William Feller, centralne twierdzenie graniczne
National Category
Mathematical Analysis History of Science and Ideas
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-116061 (URN)10.14708/am.v19i1.7364 (DOI)
Note

Full text license: CC BY 3.0

Available from: 2026-01-19 Created: 2026-01-19 Last updated: 2026-01-20
Maligranda, L. (2025). Witold Więsław (1944-2023): [Witold Więsław (1944-2023)]. Antiquitates Mathematicae, 19, 333-415
Open this publication in new window or tab >>Witold Więsław (1944-2023): [Witold Więsław (1944-2023)]
2025 (Polish)In: Antiquitates Mathematicae, ISSN 1898-5203, E-ISSN 2353-8813, Vol. 19, p. 333-415Article in journal (Refereed) Published
Abstract [pl]

Witold Więsław był matematykiem i historykiem matematyki oraz jej popularyzatorem. W matematyce zajmował się algebrą i teorią ciał topologicznych. W latach 1966-2012 pracował w Instytucie Matematycznym Uniwersytetu Wrocławskiego w Zakładach Algebry, Algebry i Teorii Liczb oraz Historii i Metodologii Matematyki. W 1971 roku uzyskał doktorat z matematyki na Uniwersytecie Wrocławskim, a w 2006 roku habilitację w Instytucie Historii Nauki PAN. Był członkiem Polskiego Towarzystwa Matematycznego (PTM) w latach 1986--2014. Opublikował ponad 220 prac oraz w 1988 roku monografię {\it Topological Fields}. Był pierwszym redaktorem czasopisma {\it Antiquitates Mathematicae}. Był on także recenzentem 132 prac i książek dla MathSciNet w latach 1972-2013 oraz 228 prac i książek dla ZblMath w latach 1974-2013. W 2003 roku przyznano mu Nagrodę Główną PTM im. Samuela Dicksteina „za osiągnięcia w dziedzinie historii matematyki i popularyzacji matematyki”.

Abstract [en]

Witold Więsław was a mathematician and historian of mathematics, as well as its popularizer. He worked on algebra and the theory of topological fields, as well as the history and popularization of mathematics. In the years 1966–2012 he worked at the Institute of Mathematics of the University of Wrocław in the Departments of Algebra, Algebra and Number Theory, and History and Methodology of Mathematics. In 1971 he obtained a doctorate in mathematics at the University of Wrocław, and in 2006 he obtained his habilitation at the Institute of the History of Science of the Polish Academy of Sciences. He was a member of the Polish Mathematical Society (PTM) in the years 1986–2014. He published over 220 papers and in 1988 the monograph Topological Fields. He was the first editor of the journal Antiquitates Mathematicae. He was also a reviewer of 132 papers and books for MathSciNet in the years 1972–2013 and 228 papers and books for ZblMath in the years 1974–2013. In 2003 he was awarded the Samuel Dickstein PTM Grand Prize “for achievements in the field of history of mathematics and popularization of mathematics”.

Place, publisher, year, edition, pages
Polskie Towarzystwo Matematyczne, 2025
Keywords
algebra, topological fields and rings, combinatorics, mathematics and 20th century mathematicians in Poland, University of Wrocław, history of science, Witold Więsław, algebra, ciała i pierścienie topologiczne, kombinatoryka, matematyka i matematycy XX wieku w Polsce, Uniwersytet Wrocławski, historia nauki, Witold Więsław
National Category
History Mathematical Analysis
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-116066 (URN)10.14708/am.v19i1.7398 (DOI)
Note

Full text license: CC BY 3.0

Available from: 2026-01-20 Created: 2026-01-20 Last updated: 2026-05-04Bibliographically approved
Maligranda, L. & Terepeta, M. (2025). XXXV Konferencja z Historii Matematyki, Będlewo 2024: [XXXV Conference on the History of Mathematics, Będlewo 2024]. Antiquitates Mathematicae, 18, 265-270
Open this publication in new window or tab >>XXXV Konferencja z Historii Matematyki, Będlewo 2024: [XXXV Conference on the History of Mathematics, Będlewo 2024]
2025 (Polish)In: Antiquitates Mathematicae, ISSN 1898-5203, E-ISSN 2353-8813, Vol. 18, p. 265-270Article in journal, Editorial material (Other (popular science, discussion, etc.)) Published
Abstract [pl]

Poniższy tekst zawiera informacje o jubileuszowej XXXV Konferencji z Historii Matematyki, która odbyła się w Będlewie w dniach 19–23 maja 2024 roku.

Abstract [en]

This text contains information about XXXV Conferenceon the History of Mathematics, which took place in The MathematicalResearch and Conference Center of the Institute of Mathematics of the Polish Academy of Sciences in Będlewo on 19–23 May 2024. 

Place, publisher, year, edition, pages
Polskie Towarzystwo Matematyczne, 2025
Keywords
History of mathematics in the 20th century, mathematicians in Europe, Polish mathematics, biographies and personalia, history of differential geometry, history of topology, approximation of functions by polynomials, mechanical calculating machines, Historia matematyki, konferencje, matematyka XIX i XX wieku, matematycy w Europie, matematyka polska, biografie i personalia, matematyka grecka, równania algebraiczne 5-go stopnia, historia topologii algebraicznej
National Category
Mathematical sciences
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-114206 (URN)10.14708/am.v18i1.7325 (DOI)2-s2.0-105021091886 (Scopus ID)
Note

Godkänd;2025;Nivå 0;2025-08-06 (u8);

Full text license: CC BY

Available from: 2025-08-06 Created: 2025-08-06 Last updated: 2026-01-20Bibliographically approved
Maligranda, L. & Terepeta, M. (2025). XXXVI Konferencja z Historii Matematyki, Będlewo 2025: [XXXVI Conference on the History of Mathematics, Będlewo 2025]. Antiquitates Mathematicae, 19, 461-466
Open this publication in new window or tab >>XXXVI Konferencja z Historii Matematyki, Będlewo 2025: [XXXVI Conference on the History of Mathematics, Będlewo 2025]
2025 (Polish)In: Antiquitates Mathematicae, ISSN 1898-5203, E-ISSN 2353-8813, Vol. 19, p. 461-466Article in journal, Editorial material (Other academic) Published
Abstract [pl]

Poniższy tekst zawiera informacje o XXXVI Konferencjiz Historii Matematyki, która odbyła się w Będlewie w dniach 18–22maja 2025 roku.

Abstract [en]

This text contains information about XXXVI Conference on the History of Mathematics, which took place in The Mathematical Research and Conference Center of the Institute of Mathematics of the Polish Academy of Sciences in Będlewo on 18–22 May 2025.

Place, publisher, year, edition, pages
Polskie Towarzystwo Matematyczne, 2025
Keywords
History of mathematics in the 20th century, mathematicians in Europe, Polish mathematics, biographies and personalia, history of differential geometry, history of topology, approximation of functions by polynomials, mechanical calculating machines, matematyka XIX i XX wieku, matematycy w Europie, matematyka polska, biografie i personalia, historia geometrii różniczkowej, historia topologii, aproksymacja funkcji wielomianami, mechaniczne maszyny liczące
National Category
Mathematical sciences History
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-116069 (URN)10.14708/am.v19i1.7397 (DOI)
Note

Full text license: CC BY 3.0

Available from: 2026-01-20 Created: 2026-01-20 Last updated: 2026-01-20
Maligranda, L. & Terepeta, M. (2024). 75 lat nazwy „przestrzeń polska”: [75 years of the name "Polish space'']. Antiquitates Mathematicae, 18, 3-24
Open this publication in new window or tab >>75 lat nazwy „przestrzeń polska”: [75 years of the name "Polish space'']
2024 (Polish)In: Antiquitates Mathematicae, ISSN 1898-5203, E-ISSN 2353-8813, Vol. 18, p. 3-24Article in journal (Refereed) Published
Abstract [pl]

Nazwa „przestrzeń polska” została zaproponowana przez Rogera Godementa (członka grupy Nicolas Bourbaki) w 1949 roku w celu uhonorowania grupy polskich matematyków, którzy obszernie zbadali te przestrzenie topologiczne. W literaturze matematycznej termin ten pojawił się dopiero w 1958 roku w książce Nicolasa Bourbaki Topologie générale. Obecnie jest to podstawowe pojęcie w opisowej teorii mnogości, używane także w teorii miary, teorii prawdopodobieństwa, w badaniach struktur borelowskich i zbiorów analitycznych.

Abstract [en]

The name Polish space was proposed by Roger Godement (member of Nicolas Bourbaki’s group) in 1949 to honor a group of Polish mathematicians who extensively researched these topological spaces. In the mathematical literature, this term appeared only in 1958 in the book by Nicolas Bourbaki Topologie générale. Currently, it is a basic concept in descriptive set theory, also used in measure theory, probability theory, in the study of Borel structures and analytic sets.

Place, publisher, year, edition, pages
Warszawa: Polskie Towarzystwo Matematyczne, 2024
Keywords
20th century mathematics and mathematicians in Poland, Polish space, Matematyka i matematycy XX wieku w Polsce, przestrzenie polskie
National Category
Mathematical Analysis
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-110819 (URN)10.14708/am.v18i1.7321 (DOI)2-s2.0-105008253806 (Scopus ID)
Note

Validerad;2024;Nivå 1;2024-11-26 (hanlid);

Full text license: CC BY 3.0

Available from: 2024-11-26 Created: 2024-11-26 Last updated: 2025-11-28Bibliographically approved
Burtseva, E. & Maligranda, L. (2023). A new result on boundedness of the Riesz potential in central Morrey–Orlicz spaces. Positivity (Dordrecht), 27(5), Article ID 62.
Open this publication in new window or tab >>A new result on boundedness of the Riesz potential in central Morrey–Orlicz spaces
2023 (English)In: Positivity (Dordrecht), ISSN 1385-1292, E-ISSN 1572-9281, Vol. 27, no 5, article id 62Article in journal (Refereed) Published
Abstract [en]

We improve our results on boundedness of the Riesz potential in the central Morrey–Orlicz spaces and the corresponding weak-type version. We also present two new properties of the central Morrey–Orlicz spaces: nontriviality and inclusion property.

Place, publisher, year, edition, pages
Springer Nature, 2023
Keywords
Central Morrey–Orlicz spaces, Morrey–Orlicz spaces, Orlicz functions, Orlicz spaces, Riesz potential, Weak central Morrey–Orlicz spaces
National Category
Mathematical Analysis
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-101976 (URN)10.1007/s11117-023-01013-4 (DOI)001189059200001 ()2-s2.0-85173831486 (Scopus ID)
Note

Validerad;2023;Nivå 2;2023-11-14 (hanlid);

Funder: Poznan University of Technology (0213/SBAD/0118);

License full text: CC BY

Available from: 2023-10-31 Created: 2023-10-31 Last updated: 2025-10-21Bibliographically approved
Maligranda, L. (2023). A simple proof of the real Riesz–Thorin interpolation theorem in the lower triangle. Colloquium Mathematicum, 172(1), 99-103
Open this publication in new window or tab >>A simple proof of the real Riesz–Thorin interpolation theorem in the lower triangle
2023 (English)In: Colloquium Mathematicum, ISSN 0010-1354, E-ISSN 1730-6302, Vol. 172, no 1, p. 99-103Article in journal (Refereed) Published
Abstract [en]

A simple proof of the real Riesz–Thorin interpolation theorem for operators of strong types (p0, q0) and (∞, ∞) in the lower triangle, that is, if 0 < p0 ≤ q0 < ∞ with the best estimate of the norms is presented.

Place, publisher, year, edition, pages
Institut Matematyczny Polskiej Akademii Nauk, 2023
Keywords
Banach spaces, Lp spaces, interpolation of operators, norms of linear operators
National Category
Mathematical Analysis
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-94292 (URN)10.4064/cm8942-10-2022 (DOI)000882791700001 ()2-s2.0-85163978899 (Scopus ID)
Note

Validerad;2023;Nivå 2;2023-04-19 (hanlid);

Funder: Poznań University of Technology (0213/S/GR/2154);

Full text license: CC BY

Available from: 2022-11-30 Created: 2022-11-30 Last updated: 2026-01-07Bibliographically approved
Maligranda, L. & Prytuła, Y. (2023). Rubin (Robert) Schatten (1911-1977). Antiquitates Mathematicae, 17(1), 163-188
Open this publication in new window or tab >>Rubin (Robert) Schatten (1911-1977)
2023 (English)In: Antiquitates Mathematicae, ISSN 1898-5203, E-ISSN 2353-8813, Vol. 17, no 1, p. 163-188Article in journal (Refereed) Published
Abstract [en]

Rubin (Robert) Schatten was a Polish-American mathematician, working mainly in functionalanalysis. In the years 1929-1933 he studied at the Jan Kazimierz University in Lvov, and master degree has written under supervision of Stefan Banach. From February 1938 until his death in August 1977 he stayed in the USA, where he obtained his doctorate in 1943 and worked at several American universities. Schatten has published 13 scientific papers and two monographs on the operator theory.He was one of the pioneers of the systematic study of tensor products of Banach spaces. His name in mathematics was immortalized in Schatten's classes of operators. We became interested in Schatten because of the beginnings of his career in Lvov and the lack of a photo in all descriptions of him.So we present the course of his life. His photo will also appear for the first time.

Abstract [pl]

Rubin (Robert) Schatten był polsko-amerykańskim matematykiem zajmującym się głównie analizą funkcjonalną. W latach 1929–1933 studiował na Uniwersytecie Jana Kazimierza we Lwowie, a pracę magisterską ukończył u Stefana Banacha. Od września 1936 roku aż do śmierci w sierpniu 1977 roku przebywał w USA, gdzie uzyskał doktorat w 1943 roku i gdzie pracował na kilku uniwersytetach amerykańskich. Schatten opublikował 13 prac naukowych i dwie monografie z teorii operatorów. Był jednym z pionierów systematycznego badania iloczynów tensorowych przestrzeni Banacha. W matematyce jego nazwisko zostało uwiecznione w klasach operatorów Schattena. Zainteresowaliśmy się Schattenem ze względu na początki jego kariery we Lwowie oraz brak zdjęcia we wszelkich opisach dotyczących jego osoby. Przedstawiamy więc koleje jego życia, o których niestety wiemy bardzo mało. Po raz pierwszy pojawi się też jego zdjęcie.

Place, publisher, year, edition, pages
Polskie Towarzystwo Matematyczne, 2023
National Category
Other Mathematics
Research subject
Applied Mathematics
Identifiers
urn:nbn:se:ltu:diva-104985 (URN)10.14708/am.v17i1.7273 (DOI)2-s2.0-105008242485 (Scopus ID)
Note

Validerad;2024;Nivå 1;2024-04-09 (joosat);

Full text: CC BY license

Available from: 2024-04-09 Created: 2024-04-09 Last updated: 2025-11-28Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-9584-4083

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