New posts in Affine Geometry

Is every vector subspace also affine?

Given four points, determine a condition on a fifth point such that the conic containing all of them is an ellipse

Degrees of Freedom in Affine Transformation and Homogeneous Transformation

Since the Curvature tensor depends on a connection(not metric), is it the relevant quantity to characterize the curvature of Riemannian manifolds?

Hole in the axioms of Hartshorne's "Foundations of Projective Geometry"?

When is a vector "glued" to the origin?

Rotation Matrix of rotation around a point other than the origin

Affine Plane of Order 4 Picture?

How to gain an intuition of the affine function's definition?

What *is* affine space?