Geodesic
Second cohomology and nilpotency class 2
Publications de l'Institut Mathématique, _N_S_81 (2007) no. 95, p. 3 .

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Conditions are given for a class 2 nilpotent group to have no central extensions of class 3. This is related to Betti numbers and to the problem of representing a class 2 nilpotent group as the fundamental group of a smooth projective variety.
DOI : 10.2298/PIM0795003C
Classification : 20J06, 57T10 20F18, 57M05
Keywords: nilpotent groups, Lie algebras, cohomology, projective varieties 
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     title = {Second cohomology and nilpotency class 2},
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     publisher = {mathdoc},
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Siniša Crvenković; Vladimir Tasić. Second cohomology and nilpotency class 2. Publications de l'Institut Mathématique, _N_S_81 (2007) no. 95, p. 3 . doi : 10.2298/PIM0795003C. http://geodesic.mathdoc.fr/articles/10.2298/PIM0795003C/

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