The mystery of non-Hausdorff manifolds

A review of the least-discussed manifolds of all

Last updated : 2019-10-17 16:27:44

Geodesically complete incompleteness and the most awful spacetimes

How one can construct a geodesically complete spacetime with singularities

Last updated : 2018-11-14 10:07:16

All about $1$-manifolds

Last updated : 2019-07-10 13:23:20