Dans cet article on étudie certains aspects liés à la cohomologie des groupes et on construit une extension centrale du groupe symplectique .
In this paper we study some aspects of the cohomology of groups and we construct a central extension of the symplectic group .
@article{AIF_2004__54_4_875_0, author = {Mazzoleni, Amedeo}, title = {Partially defined cocycles and the Maslov index for a local ring}, journal = {Annales de l'Institut Fourier}, volume = {54}, year = {2004}, pages = {875-885}, doi = {10.5802/aif.2037}, mrnumber = {2111015}, zbl = {1081.20061}, language = {en}, url = {http://dml.mathdoc.fr/item/AIF_2004__54_4_875_0} }
Mazzoleni, Amedeo. Partially defined cocycles and the Maslov index for a local ring. Annales de l'Institut Fourier, Tome 54 (2004) pp. 875-885. doi : 10.5802/aif.2037. http://gdmltest.u-ga.fr/item/AIF_2004__54_4_875_0/
[1] Cohomology of Groups, Springer-Verlag, New York a.o. (1982) | MR 672956 | Zbl 0584.20036
[2] Quelques propriétés homologiques du groupe (2002) (Thèse de l'université Paris XIII, Paris)
[3] Maslov index and a central extension of the symplectic group, -Theory, Tome 19 (2000), pp. 29-45 | MR 1740881 | Zbl 1037.11026