New posts in Differential Geometry

Ricci tensor given through the metric

Difference tensor between two connections

Is it always possible to have a (local) time coordinate in GR?

Why is this vector field curl-free?

What are Hamilton's equations with respect to a nonstandard symplectic form?

Why is general relativity a geometric theory?

Understanding gauge fields as connections on a principal G-bundle

Can I use a higher rank tensor field as the metric field?

What is really curved, spacetime, or simply the coordinate lines?

Any "connection" between uncountably infinitely many differentiable manifolds of dimension 4 and the spacetime having dimension four?