Question

Dirichlet's work on gravity in non-Euclidean space?

Answer 1

correct interpretation of T=Tx+Ty+Tz and whether is it possible to have a "manifold" where such a Pythagoras like theorem exists that one can write say, T=Tx+Ty−Tz

Answer 2

Explanation:

correct interpretation of T=Tx+Ty+Tz and whether is it possible to have a "manifold" where such a Pythagoras like theorem exists that one can write say, T=Tx+Ty−Tz