(b. 22 December 1872, Lviv; d. 10 August 1955, Poznań)
Krygowski attended the high school in Wadowice and then High School no. III in Kraków. In 1890–1895 he studied mathematics, physics and astronomy in the Faculty of Philosophy at the Jagiellonian University, gaining a doctorate there in 1895 under the supervision of Franciszek Michał Karliński. In 1896–1898 he studied at the Faculté des Sciences in Paris, where he attended lectures given by, among others, Paul Appell, Émile Borel, Émile Picard, and Henri Poincaré. He then worked from 1898 until 1901 as a teacher of mathematics and physics at high schools in Kraków, Przemyśl, and Lwów (Lviv). He gained his habilitation degree in 1907 at the Polytechnical School in Lwów (later Lwów Polytechnic). He became an associate professor there in 1908, and a full professor in 1909. In 1919 he moved to Poznań to join that city’s newly formed university, where he worked from 1919 to 1938 and from 1946 to 1955. In the periods 1919–1920 and 1934–1936 he held the post of vice-rector. His research concerned analytic functions, particularly elliptical and hyperelliptical functions and their integrals, as well as differential geometry and algebra. He published 48 works, including three textbooks. He also wrote on topics relating to Chopin. He was the supervisor of three successful doctoral students, and was an organiser of the Poznań mathematical community.
M. Jaroszewska, “Krygowski Zdzisław”, in: Luminarze nauki Uniwersytetu Poznańskiego 1919–2019, ed. Z. Pilarczyk, Wyd. Nauk. UAM, Poznań 2019, pp. 328–331.
L. Maligranda, W. Wnuk, 100 lat matematyki na uniwersytecie w Poznaniu 1919–2019, Wyd. Nauk. UAM, Poznań 2021, pp. 281–290 and 437–438.
S. Domoradzki et al., Słownik biograficzny matematyków polskich, Tarnobrzeg 2003.
R. Duda, Matematycy XIX i XX wieku związani z Polską, Wyd. Uniwersytetu Wrocławskiego, Wrocław 2012.