Paul Funk
Paul Georg Funk (14 April 1886, Vienna – 3 June 1969, Vienna was an Austrian mathematician who introduced the Funk transform and who worked on the calculus of variations. He was one of David Hilbert's students.
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Wikipedia
Paul Georg Funk (14 April 1886, Vienna – 3 June 1969, Vienna was an Austrian mathematician who introduced the Funk transform and who worked on the calculus of variations. He was one of David Hilbert's students.