Generalized Geometries Constructed from Differential Forms on Cotangent Bundle

Abstract: We investigate the landscape of generalized geometries that can be derived from Monge-Amp`ere structures. Instead of following the approaches of Banos, Roubtsov, Kosmann-Schwarzbach, and others, we take a new path inspired by the results of Hu, Moraru, and Svoboda. We construct a large family of new generalized almost geometries derived from non-degenerate 2D symplectic Monge-Amp`ere structures and other related geometric objects, such as complex structures. We demonstrate that, under certain assumptions, non-degenerate Monge-Amp`ere structures give rise to quadric surfaces of generalized almost geometries. Additionally, we discuss the link between Monge-Amp`ere structures and Monge-Amp`ere equations within this framework.