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Willie Wong

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426 Does there exist a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not? Sep 30 '14
247 Open problems in General Relativity Jul 9 '11
114 Mathematical precise definition of a PDE being elliptic, parabolic or hyperbolic Feb 11 '11
89 How to read letters such as $\mathbb A$, $\mathbb B$, etc., or $\mathfrak A$, $\mathfrak B$, etc.? Jan 22 '13
76 Is zero positive or negative? Mar 13 '11
75 Difference between Fourier transform and Wavelets Jan 16 '13
75 Mathematical explanation behind a picture posted (lifted from facebook) Oct 19 '11
73 Does a Fourier transformation on a (pseudo-)Riemannian manifold make sense? Dec 11 '10
68 Is this Batman equation for real? Jul 29 '11
50 Good book for self study of functional analysis Oct 22 '10
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