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Mathematics
Zhen Lin's user avatar
Zhen Lin's user avatar
Zhen Lin's user avatar
Zhen Lin
  • Member for 13 years, 6 months
  • Last seen more than a week ago
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120
What concept does an open set axiomatise?
Apr 9, 2011
95
Sheaf cohomology: what is it and where can I learn it?
Jul 31, 2011
73
Why did my friend lose all his money?
Aug 28, 2012
69
Simplicial homology of real projective space by Mayer-Vietoris
Mar 14, 2011
59
Why is the category of fields seemingly so poorly behaved?
Jul 14, 2020
53
Understanding Ramification Points
May 29, 2012
53
What are differences between affine space and vector space?
Aug 1, 2014
52
What is the 'implicit function theorem'?
Mar 10, 2011
51
Zero probability and impossibility
May 24, 2011
51
In set theory, how are real numbers represented as sets?
Sep 8, 2011
Top Meta posts
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53
Are we closing short questions too hastily?
17
Should chat have TeX support?
6
Firefox 4 and MathJax \not
6
Mistagged algebraic-geometry questions
5
Tag rename request: (synthetic-differential) to (synth-differential-geometry)
Top network posts
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38
TOC entries and labels for included PDF pages
32
What is the theory of local rings and local ring homomorphisms?
29
Distinguishing certain characters in handwriting and print (Similar-looking Kana and Kanji)
28
Is there a good general definition of "sheaves with values in a category"?
28
How many Kanji characters are there?