codimension-one foliations on the three-sphere whose Godbillon–Vey invariant (after Claude Godbillon and Jacques Vey) takes every real value. With John...
22 KB (2,166 words) - 15:25, 18 September 2024
representation where each group element acts as a symplectic transformation. Claude Godbillon (1969) "Géométrie différentielle et mécanique analytique", Hermann...
15 KB (2,275 words) - 11:50, 14 August 2024
1972–1973: Jean-Pierre Kahane 1974: Georges Poitou 1975: Yvette Amice 1976: Claude Godbillon 1977: Jacques Neveu 1978: Jean-Louis Koszul 1979–1980: Marcel Berger...
5 KB (520 words) - 17:10, 13 July 2024
Propriétés topologiques des variétés feuilletées (1948) Doctoral advisor Charles Ehresmann Doctoral students Claude Godbillon [fr; de] Jean Martinet [fr; de]...
10 KB (855 words) - 15:00, 17 June 2024
group of founding members (J.P. Aubin, J. Céa, P. Deheuvels, F. Dress, C. Godbillon, H. Hogbe Nlend, J.L. Lions, J.L. Koszul, E.J. Picard, A. Revuz, P. Sabourin)...
5 KB (585 words) - 07:21, 30 September 2024