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Clemens Sämann

I am PostDoc at the University of Toronto and interested in mathematical problems in the theory of general relativity, especially spacetimes with low-regularity metrics and synthetic approaches to Lorentzian geometry.

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Top posts (12) All Questions Answers | Votes Newest

6 Do (3+1)-dimensional Lorentzian manifolds admit unique smoothings? Jun 18 '19
5 Existence and uniqueness of geodesics in low regularity Jun 8 '18
4 On the causal structure of spacetimes: piecewise $C^1$, $C^k$ or $C^\infty$? Mar 5 '19
3 Reference for the fact that the images of the narrow and wide Denjoy integrals are respectively $ACG_\ast$ and $ACG$? Feb 19 '14
3 Subset of causal spacetime+Imprisonment Condition+Compact Closure -> Stably Causal spacetime? Aug 13 '14
3 Caratheodory equations Aug 19 '14
3 Conditions on a Lorentzian manifold to ensure existence of global proper-time foliation? Aug 13 '15
1 Schwartz distributions, Colombeau algebra and applications Jun 26 '18
1 Open problems in PDEs, dynamical systems, mathematical physics Sep 9 '18
1 Lie Groups and PDEs Nov 17 '18
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