Willie Wong
A mathematician specializing in nonlinear hyperbolic PDEs, geometric analysis of pseudoRiemannian manifolds, and general relativity.
A few of my questions on MO have not yet received a complete answer. Some of them I think about in the course of my research. But this one is entirely orthogonal to my main research activity and I would love to know the answer!
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 363 Does there exist a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?
 238 Open problems in General Relativity
 129 What's the best way to write email addresses?
 126 Does there exist a bijection of $\mathbb{R}^n$ to itself such that the forward map is connected but the inverse is not?
 111 Mathematical precise definition of a PDE being elliptic, parabolic or hyperbolic
 102 Math and Wormholes
 89 How to read letters such as $\mathbb A$, $\mathbb B$, etc., or $\mathfrak A$, $\mathfrak B$, etc.?
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