Feliks Barański was a Polish

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

 mathematician and an active member of the so-called Lwow School of Mathematics

Lwów School of Mathematics

The Lwów School of Mathematics was a group of mathematicians who worked between the two World Wars in Lviv, then known as Lwów and located in Poland, but now located in western Ukraine. The mathematicians often met at the famous Scottish Café to discuss mathematical problems, and published in the...

. Born May 1915 in Lwow, Austria-Hungary

Austria-Hungary

Austria-Hungary , more formally known as the Kingdoms and Lands Represented in the Imperial Council and the Lands of the Holy Hungarian Crown of Saint Stephen, was a constitutional monarchic union between the crowns of the Austrian Empire and the Kingdom of Hungary in...

 (modern Lviv

Lviv

Lviv is a city in western Ukraine. The city is regarded as one of the main cultural centres of today's Ukraine and historically has also been a major Polish and Jewish cultural center, as Poles and Jews were the two main ethnicities of the city until the outbreak of World War II and the following...

, Ukraine), he joined the circle of young, talented mathematicians formed around Stefan Banach

Stefan Banach

Stefan Banach was a Polish mathematician who worked in interwar Poland and in Soviet Ukraine. He is generally considered to have been one of the 20th century's most important and influential mathematicians....

 and Hugo Steinhaus

Hugo Steinhaus

Władysław Hugo Dionizy Steinhaus was a Polish mathematician and educator. Steinhaus obtained his PhD under David Hilbert at Göttingen University in 1911 and later became a professor at the University of Lwów, where he helped establish what later became known as the Lwów School of Mathematics...

. During the period of German occupation of his hometown he made his living as a lice feeder in the institute of Rudolf Weigl

Rudolf Weigl

Professor Rudolf Stefan Weigl was a famous Polish biologist and inventor of the first effective vaccine against epidemic typhus. Weigl founded the Weigl Institute in Lwów, Poland , where he did his vaccine-producing research.Of Austrian ethnic descent, Weigl was born in Přerov, Moravia...

. Expelled from Lwow after the war, he settled in Cracow

Kraków

Kraków also Krakow, or Cracow , is the second largest and one of the oldest cities in Poland. Situated on the Vistula River in the Lesser Poland region, the city dates back to the 7th century. Kraków has traditionally been one of the leading centres of Polish academic, cultural, and artistic life...

, where he joined the local Kraków University of Technology. He was also admitted into the Polish Mathematics Society.