Generalized Calabi–Markus conjecture for positive sectional curvature
Generalized Calabi–Markus conjecture for positive sectional curvature
Let with . Suppose that is a complete pseudo-Riemannian manifold of signature whose sectional curvature has a positive lower bound.
Generalized Calabi–Markus conjecture. The fundamental group is finite, and is noncompact.
This conjecture generalizes the Calabi–Markus theorem from Lorentz geometry to pseudo-Riemannian manifolds of arbitrary signature satisfying the stated inequalities. The source gives no resolution status.
Sources & referencesView supporting material
Primary source
Toshiyuki Kobayashi, “On discontinuous group actions on non-Riemannian homogeneous spaces”, arXiv:math/0603319 (2006).
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