2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/162203We set up a Batalin-Vilkovisky Quantum Master Equation for open-closed string theory and show that the corresponding moduli spaces give rise to a solution, a generating function for their fundamental chains. The equation encodes the topological structure of the compactification of the moduli space of bordered Riemann surfaces. The moduli spaces of bordered J-holomorphic curves are expected to satisfy the same equation, and from this viewpoint, our paper treats the case of the target space equal to a point. We also introduce the notion of a symmetric Open-Closed Topological Conformal Field Theory and study the L_\infty and A_\infty algebraic structures associated to it.21 pages, LaTeX, 4 figures; section on algebraic structures revisedQuantum AlgebraAlgebraic Geometry14D21; 81T40text