Charles Ehresmann
![Charles Ehresmann (right) at the topology conference 1949 in [[Mathematical Research Institute of Oberwolfach|Oberwolfach]], together with [[Paul Vincensini (mathematician)|Paul Vincensini]] (middle) and [[Georges Reeb]] (left)](https://upload.wikimedia.org/wikipedia/commons/a/af/Georges_Reeb%2C_Paul_Vincensini%2C_Charles_Ehresmann.jpeg)
Charles Ehresmann (19 April 1905 – 22 September 1979) was a German-born French mathematician who worked in differential topology and category theory.He was an early member of the Bourbaki group, and is known for his work on the differential geometry of smooth fiber bundles, notably the introduction of the concepts of Ehresmann connection and of jet bundles, and for his seminar on category theory. Provided by Wikipedia
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