Lie super-bialgebra structures on the Lie superalgebra of Witt type

摘要

In this article, Lie super-bialgebra structures on the Lie superalgebra of Witt type W are investigated. They are shown to be triangular coboundary. As a byproduct, we obtain that the first cohomology group H-1 (W,W circle times W) is trivial.