Weak Lie 2-bialgebra

Abstract

We introduce the notion of weak Lie 2-bialgebra. Roughly, a weak Lie 2-bialgebra is a pair of compatible 2-term $L_{\infty }$-algebra structures on a vector space and its dual. The compatibility condition is described in terms of the big bracket. We prove that (strict) Lie 2-bialgebras are in one-one correspondence with crossed modules of Lie bialgebras.

14 pages, LaTeX; typoes removed; references modified

References in corpus (1)

• Higher-Dimensional Algebra V: 2-Groups

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