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- Volume 72 - Année 2003
- Numéro 6
- ON THE COHOMOLOGY OF THE LIE SUPERALGEBRA OF CONTACT VECTOR FIELDS ON S1/1
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ON THE COHOMOLOGY OF THE LIE SUPERALGEBRA OF CONTACT VECTOR FIELDS ON S1/1
Abstract
We investigate the first cohomology space attached to the embedding of the Lie superalgebra S(1/1) of contact vector fields on the supercircle in the Lie Superalgebra of superpseudodifferential operators. We show that this space is four-dimensional with only even cocycles and we calculate explicitly four 1-cocycles representing non-trivial generating cohomology classes.
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A propos de : B. Agrebaoui
Département de Mathématiques, Faculté des Sciences de Sfax, Route de Soukra,,3018 Sfax BP 802, Tunisie, bagreba@fss.rnu.tn
A propos de : N. Ben Fraj
Institut Supérieur de Sciences Appliquées et Technologie, Sousse, benfraj-nizar@yahoo.fr