4 problems

Let $n \geq 3$ and let $M$ be a cNTV $n$-dimensional spacetime. Write \langle M, \mathrel{\scalebox{0.85}{oldalpha}} \rangle for its frame with the causal relation…

Higher-dimensional spacetime density conjecture. There exists an integer $m\geq 2$ such that, for every $\epsilon>0$, there exists a positive integer $d$ with the property that whe…

Hawking's chronology protection conjecture. The laws of physics do not allow the appearance of closed timelike curves.

The spacetime under consideration satisfies the hypotheses of Theorem … is weakly ultimately Schwarzschildean to order $k+2$. This conjecture is motivated by techniques that obtain…