  BiHom-Novikov agebra is a generalized Hom-Novikov algebra endowed with two
commuting multiplicative linear maps. The main purpose of this paper is to show
that two classes of BiHom-Novikov algebras can be constructed from
BiHom-commutative algebras together with derivations and BiHom-Novikov algebras
with Rota-Baxter operators, respectively. We show that quadratic BiHom-Novikov
algebras are associative algebras and the sub-adjacent BiHom-Lie algebras of
BiHom-Novikov algebras are 2-step nilpotent. Moreover, we develop the
1-parameter formal deformation theory of BiHom-Novikov algebras.
