Danuta Gierulanka

Gierulanka was born in Kraków on 30 June 1909; her father was a civil servant. She studied mathematics at the Jagiellonian University from 1927 to 1932, completing a master's degree with a thesis on Periodic solutions of differential equations, and stayed there for another year for a teaching credential. From 1933 to 1938 she worked as a high school teacher of mathematics, science, and philosophy at two Kraków gymnasia.[2]

Gierulanka returned to the Jagiellonian University in 1938, as a psychology student working in the Laboratory of Experimental Psychology with Władysław Heinrich.[1][2] Her studies were interrupted by World War II, during which she and her brother, physicist Jerzy Gierula, taught in secret. She completed her doctorate in 1947.[2] Her dissertation, O przyswajaniu sobie pojęć geometrycznych [On Grasping Geometrical Notions], was published as a book in 1958.[1][2]

Gierulanka remained at the Jagiellonian University, and in 1953 became an adjunct in mathematical analysis at the university, with the plan of writing a habilitation thesis combining mathematical analysis with psychology. However, this did not materialize and in 1957 she returned to the Laboratory of Experimental Psychology.[2]

In 1958 Gierulanka moved again, becoming an adjunct in philosophy.[2] She became interested in Roman Ingarden's work in phenomenology,[1] and wrote a habilitation thesis in 1962 on the phenomenology of mathematics, Zagadnienie swoistoici poznania matematycznego [On the Peculiarity of Mathematical Cognition], also published at the same time as a book.[1][2] Failing to obtain a permanent position in philosophy, she returned to a posting in psychology at Jagiellonian, from which she retired in 1971. She died on 29 April 1995 in Kraków.[2]

After her habilitation work, Gierulanka became one of the editors of Ingarden's collected works. She also translated works of Ingarden, Edmund Husserl, and Edith Stein into Polish.[1][2]

• Kusak, Leszek (2002), "Danuta Gierulanka – życie i twórczość" [Danuta Gierulanka – fire and creation], Ruch Filozoficzny, 3 (3): 411–415