2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/76600In this paper, we will describe the mathematical foundation of topological Landau-Ginzburg (LG) models coupled to gravity at genus 0 in terms of primitive forms. We also discuss the mirror symmetry for Calabi-Yau manifolds and CP^1 in our context. We will show that the mirror partner of CP^1 is the theory of primitive form associated to f=z+qz^{-1}.29pages, LaTeX2e fileAlgebraic Geometrytext