Essential Manifold: Mathematics, Algebraic Topology, Differential Geometry

Flat Topology: Mathematics, Grothendieck Topology, Algebraic Geometry, Module

Toric Manifold: Mathematics, Variety, Algebraic Geometry

Calibrated Geometry: Mathematics, Differential Geometry, Riemannian Manifold

Tropical Geometry: Mathematics, Piecewise Linear Manifold, Algebraic Geometry