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Mathematics
Willie Wong's user avatar
Willie Wong's user avatar
Willie Wong's user avatar
Willie Wong
  • Member for 13 years, 11 months
  • Last seen more than a week ago
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618
Is there a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?
Sep 30, 2014
271
Open problems in General Relativity
Jul 9, 2011
142
Mathematical precise definition of a PDE being elliptic, parabolic or hyperbolic
Feb 11, 2011
100
Is zero positive or negative?
Mar 13, 2011
98
Does a Fourier transformation on a (pseudo-)Riemannian manifold make sense?
Dec 11, 2010
94
Difference between Fourier transform and Wavelets
Jan 16, 2013
92
How to read letters such as $\mathbb A$, $\mathbb B$, etc., or $\mathfrak A$, $\mathfrak B$, etc.?
Jan 22, 2013
75
Mathematical explanation behind a picture posted (lifted from facebook)
Oct 19, 2011
67
Is this Batman equation for real?
Jul 29, 2011
56
Differentiablility over closed intervals
Mar 30, 2012
Top Meta posts
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How to ask a good question.
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How to ask a homework question
159
Announcement: I'm retiring
157
How to ask a homework question
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How to ask a good question.
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170
What's the best way to write e-mail addresses?
155
Does there exist a bijection of $\mathbb{R}^n$ to itself such that the forward map is connected but the inverse is not?
104
Citing a range of papers using numeric keys as in \cite{a, b, c} -> [1-3]
104
Math and Wormholes
95
What are the advantages or disadvantages of using LaTeX for writing scientific publications