Tadeusz Figiel

Tadeusz Figiel
Born	(1948-07-02) 2 July 1948 (age 77) Gdańsk, Poland
Died	8 September 2025(2025-09-08) (aged 77) Gdańsk, Poland
Nationality	Polish
Alma mater	University of Warsaw
Scientific career
Fields	Mathematics (Functional Analysis)
Doctoral advisor	Aleksander Pełczyński
Doctoral students	Andrzej Borzyszkowski

Tadeusz Figiel (2 July 1948 – 8 September 2025^[1]) was a Polish mathematician specializing in functional analysis.^[2]

Biography

In 1970 Figiel graduated in mathematics at the University of Warsaw. He received his doctorate in 1972 under the supervision of Aleksander Pełczyński^[3] and then habilitated in 1975 with habilitation thesis O modułach wypukłości i gładkości (On modules of convexity and smoothness) at the Instytut Matematyczny Polskiej Academia Nauk [pl] (Instytut Matematyczny PAN). There Figiel was appointed in 1983 an associate professor and in 1990 a full professor. He is the head of the Gdańsk Branch of the Polish Academy of Sciences and the editor-in-chief of the journal Studia Mathematica.^[4]

Figiel received in 1976 the Stefan Banach Award, in 1988 the Polish State Award [pl] of First Degree (together with Zbigniew Ciesielski), in 1989 the Medal of the National Education Committee [pl], and in 2004 the Stefan Banach Medal. In 1983 he was an Invited Speaker at the International Congress of Mathematicians in Warsaw.^[5]

Selected publications

• Figiel, T.; Johnson, W. B. (1973). "The approximation property does not imply the bounded approximation". Proceedings of the American Mathematical Society. 41 (1): 197–200. doi:10.1090/S0002-9939-1973-0341032-5.
• Davis, W. J.; Figiel, T.; Johnson, W. B.; Pelczynski, A. (1974). "Factoring weakly compact operators" (PDF). Journal of Functional Analysis. 17 (3): 311–327. doi:10.1016/0022-1236(74)90044-5.
• Figiel, T.; Johnson, W. B. (1974). "A uniformly convex Banach space which contains no l_p". Compositio Mathematica. 29 (2): 179–190.
• Figiel, T.; Johnson, W. B.; Tzafriri, L. (1975). "On Banach lattices and spaces having local unconditional structure, with applications to Lorentz function spaces" (PDF). Journal of Approximation Theory. 13 (4): 395–412. doi:10.1016/0021-9045(75)90023-4.
• Figiel, T. (1976). "On the moduli of convexity and smoothness". Studia Mathematica. 56 (2): 121–155. doi:10.4064/sm-56-2-121-155.
• Figiel, T.; Lindenstrauss, J.; Milman, V. D. (1977). "The dimension of almost spherical sections of convex bodies". Acta Mathematica. 139 (1): 53–94. doi:10.1007/BF02392234.
• Ciesielski, Z.; Figiel, T. (1983). "Spline bases in classical function spaces on compact C^∞ manifolds, Part II". Studia Mathematica. 76 (2): 95–136. doi:10.4064/sm-76-2-95-136.
• Figiel, T. (1990). "Singular integral operators: a martingale approach". Geometry of Banach spaces (Strobl, 1989). London Mathematical Society Lecture Note series. Vol. 158. pp. 95–110. doi:10.1017/CBO9780511662317.010.
• Dykema, Ken; Figiel, Tadeusz; Weiss, Gary; Wodzicki, Mariusz (2004). "Commutator structure of operator ideals" (PDF). Advances in Mathematics. 185 (1): 1–79. doi:10.1016/S0001-8708(03)00141-5.

References

1. https://om.sem.edu.pl/articles
2. "prof. dr hab. Tadeusz Figiel".
3. Aleksander Pełczyński at the Mathematics Genealogy Project
4. Złota księga nauk ekonomicznych, prawnych i ścisłych 2005 (The Golden Book of Economics, Law and Science 2005), wyd. Mastermedia sp. z o.o. i wyd. Helion, Gliwice 2005, p. 67
5. Figiel, T. "Local theory of Banach spaces and some operator ideals." In Proc. ICM, Warsaw, pp. 961–976. 1983.