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 .
Classification : 20J06, 11E08
Mots clés : Cocycle, -dense, ensemble quasi-simplicial, Lagrangien, transverse, groupe symplectique
@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}, pages = {875--885}, publisher = {Association des Annales de l'institut Fourier}, volume = {54}, number = {4}, year = {2004}, doi = {10.5802/aif.2037}, zbl = {1081.20061}, mrnumber = {2111015}, language = {en}, url = {archive.numdam.org/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) no. 4, pp. 875-885. doi : 10.5802/aif.2037. http://archive.numdam.org/item/AIF_2004__54_4_875_0/
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