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Jacques Feldbau

Jacques Feldbau
Born(1914-10-22)22 October 1914
Straßburg, Alsace-Lorraine, German Empire (today Strasbourg, Alsace, France)
Died22 April 1945(1945-04-22) (aged 30)
Ganacker, subcamp of Flossenbürg concentration camp, Germany
Alma materUniversity of Straßburg
Known forFeldbau's theorem: a fiber bundle over a simplex is trivializable
Scientific career
FieldsMathematics
Doctoral advisorCharles Ehresmann

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.[1]

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.[2]

  1. ^ J. Feldbau (1939). "Sur la classification des espaces fibrés". C. R. Acad. Sci. Paris. 208: 1621–1623.
  2. ^ C. Ehresmann and J. Feldbau (1941). "Sur les propriétés d'homotopie des espaces fibrés". C. R. Acad. Sci. Paris. 212: 945–948.

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