Jacqueline Ferrand

Jacqueline Lelong-Ferrand (17 February 1918, Alès, France – 26 April 2014, Sceaux, France) was a French mathematician who worked on conformal representation theory, potential theory, and Riemannian manifolds. She taught at universities in Caen, Lille, and Paris.[1][2][3]

Education and career

Ferrand was born in Alès, the daughter of a classics teacher, and went to secondary school in Nîmes.[4] In 1936 the École Normale Supérieure began admitting women, and she was one of the first to apply and be admitted. In 1939 she and Roger Apéry placed first in the mathematics agrégation; she began teaching at a girls' school in Sèvres, while continuing to do mathematics research under the supervision of Arnaud Denjoy, publishing three papers in 1941 and defending a doctoral thesis in 1942.[4][5][6] In 1943 she won the Girbal-Baral Prize of the French Academy of Sciences, and obtained a faculty position at the University of Bordeaux. She moved to the University of Caen in 1945, was given a chair at the University of Lille in 1948, and in 1956 moved to the University of Paris as a full professor. She retired in 1984.[4][5][7]

Contributions

Ferrand had nearly 100 mathematical publications, including ten books,[5] and was active in mathematical research into her late 70s.[4] One of her accomplishments, in 1971, was to prove the compactness of the group of conformal mappings of a non-spherical compact Riemannian manifold, resolving a conjecture of André Lichnerowicz, and on the basis of this work she became an invited speaker at the 1974 International Congress of Mathematicians in Vancouver.[4][7]

Personal life

She married mathematician Pierre Lelong in 1947, taking his surname alongside hers in her subsequent publications[5] until their separation in 1977.[4][7]

gollark: Er, my point is that there are bad things they can do with it which don't necessarily involve selling it to other companies.
gollark: Google also had that whole thing with tracking locations even when that was disabled.
gollark: So you're just hoping that evil governments will also be incompetent?
gollark: Also, you live in Turkey, which has a kind of evil government, right? If Google cooperated with them, they could probably use that data to track down and/or identify dissidents.
gollark: I think they already use location data to "help" investigate crimes, in ways which tend to implicate innocent people randomly.

References
  1. Curriculum vitae; accessed 5 May 2014.
  2. Jacqueline Ferrand profile, smf.emath.fr; accessed 5 May 2014 (in French)
  3. Lelong-Ferrand profile; accessed 5 May 2014. (in French)
  4. O'Connor, John J.; Robertson, Edmund F., "Jacqueline Ferrand", MacTutor History of Mathematics archive, University of St Andrews.
  5. Biographies of Women Mathematicians, Agnes Scott College; accessed 5 May 2014.
  6. Jacqueline Ferrand at the Mathematics Genealogy Project
  7. Kosmann-Schwarzbach, Yvette (2015), "Women mathematicians in France in the mid-twentieth century", BSHM Bulletin: Journal of the British Society for the History of Mathematics, 30 (3): 227–242, arXiv:1502.07597, Bibcode:2015arXiv150207597K, doi:10.1080/17498430.2014.976804.
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