Almost Symplectic Manifold: Differential Geometry, Differentiable Manifold, Form

Hypercomplex Manifold: Differential Geometry, Quaternions, Almost Complex Manifold

Projective Connection: Differential Geometry, Cartan Connection, Differentiable Manifold

Logarithmic Form: Logarithm, Complex Manifold, Algebraic Geometry, Differential Form

Symplectic Cut: Mathematics, Geometry, Manifold, Sum