6 problems
Compact quotient implies local fibration conjecture. If admits compact quotients, then it admits local geometric fibrations.
Precise geometric fibration conjecture. There exists a -invariant contractible smooth submanifold of , of dimension , such that
Compact quotient–local fibration conjecture. The following are equivalent:
Geometric fibration conjecture. The group is the fundamental group of a closed aspherical manifold , and there exists a smooth -equivariant fiber bundle
Kobayashi's conjecture. The reductive homogeneous space admits compact quotients if and only if it admits standard ones.
Space Form Conjecture. There exists a compact, complete pseudo-Riemannian manifold of signature with constant sectional curvature if and only if lies in the fol…