4 problems

Locally rigid observer conjecture. For all locally rigid observers, the angular velocity of the observer equals the negative of the angular velocity of the Foucault precession when…

Rigidity criterion for Foucault precession. The Foucault precession is meaningful if and only if the observer is locally rigid.

Foucault-precession angular-velocity conjecture. Whenever the Foucault precession makes sense for an observer, it is equal to the negative of the angular velocity of the observer.

Let $\{\mathcal{A}(\mathcal{O})\}$ be a Haag–Kastler net on a spacetime $\mathcal{M}$ satisfying axioms (HK1)–(HK4), with (HK2) interpreted as a sharper-than-equal-time commutation…