Jan Hertrich-Woleński (also known as Jan Woleński; born 21 September 1940) is a Polish philosopher specializing in the history of the Lwów–Warsaw school of logic and in analytic philosophy. He has spent most of his academic career at the Jagiellonian University in Kraków, where he is currently professor emeritus. His main fields of research are logic, epistemology, and the history of philosophy in Poland. Source: Wikipedia (en)