Jacques Feldbau

1. Ganacker concentration camp
   Dates unknown
2. Drancy concentration camp
   Dates unknown
3. Zigeunerlager Auschwitz
   Dates unknown
4. Flossenbürg concentration camp
   Dates unknown
5. Zigeunerlager Auschwitz
   Dates unknown

Jacques Feldbau was a French mathematician, born on 22 October 1914 in Strasbourg, of an Alsatian Jewish traditionalist family. He died on 22 April 1945 at the Ganacker Camp, annex of the concentration camp of Flossenbürg in Germany. As a mathematician he worked on differential geometry and topology. He was the first student of Charles Ehresmann. He is known as one of the founders of the theory of fiber bundles. He is the one who first proved that a fiber bundle over a simplex is trivializable and who used this to classify bundles over spheres. In a paper, written together with Ehresmann, he introduced the notion of an associated bundle and proved results known today as the exact homotopy sequence of a fibration.