BV-operators and secondary Hochschild complex

Abstract: We introduce the notion of a BV-operator $\Delta={\Delta^n:V^n\longrightarrow V^{n-1}}_{n\geq 0}$ on a homotopy $G$-algebra $V^\bullet$ such that the Gerstenhaber bracket on $H(V^\bullet)$ is determined by $\Delta$ in a manner similar to the BV-formalism. As an application, we produce a BV-operator on the cochain complex defining the secondary Hochschild cohomology of a symmetric algebra $A$ over a commutative algebra $B$.