Chao Xu
PhD student in CS theory at UIUC.
I'm interested in algorithms, combinatorial optimization, computational geometry and problem solving in general.
 Urbana, IL
 chaoxuprime.com
 Member for 5 years, 3 months
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 Last seen Aug 4 at 19:33
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Top Network Posts
 56Why is "the set of all sets" a paradox?
 36Sorting algorithm, such that each element is compared $O(\log n)$ times, and doesn't depend on a sorting network
 35What is the shortest string that contains all permutations of an alphabet?
 32Why isn't reflexivity redundant in the definition of equivalence relation?
 25Find taxicab numbers in $O(n)$ time
 22How to use the computer modern font in webpages?
 22What mathematical questions or areas have philosophical implications outside of mathematics?
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