Deformation families of Novikov bialgebras via differential antisymmetric infinitesimal bialgebras
arxiv(2024)
摘要
Generalizing S. Gelfand's classical construction of a Novikov algebra from a
commutative differential algebra, a deformation family (A,∘_q), for
scalars q, of Novikov algebras is constructed from what we call an admissible
commutative differential algebra, by adding a second linear operator to the
commutative differential algebra with certain admissibility condition. The case
of (A,∘_0) recovers the construction of S. Gelfand. This admissibility
condition also ensures a bialgebra theory of commutative differential algebras,
enriching the antisymmetric infinitesimal bialgebra. This way, a deformation
family of Novikov bialgebras is obtained, under the further condition that the
two operators are bialgebra derivations. As a special case, we obtain a
bialgebra variation of S. Gelfand's construction with an interesting twist:
every commutative and cocommutative differential antisymmetric infinitesimal
bialgebra gives rise to a Novikov bialgebra whose underlying Novikov algebra is
(A,∘_-1/2) instead of (A,∘_0). The close relations of the
classical bialgebra theories with Manin triples, classical Yang-Baxter type
equations, 𝒪-operators, and pre-structures are expanded to the two
new bialgebra theories, in a way that is compatible with the just established
connection between the two bialgebras. As an application, Novikov bialgebras
are obtained from admissible differential Zinbiel algebras.
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