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Hsien-Chih Chang 張顯之's user avatar
Hsien-Chih Chang 張顯之's user avatar
Hsien-Chih Chang 張顯之's user avatar
Hsien-Chih Chang 張顯之
  • Member for 14 years, 9 months
  • Last seen more than a week ago
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About

PhD student in Department of Computer Science, University of Illinois at Urbana-Champaign.

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Top posts
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85
What are your favorite instructional counterexamples?
Mar 2, 2010
answer
26
Is there a 7-regular graph on 50 vertices with girth 5? What about 57-regular on 3250 vertices?
Oct 28, 2010
question
24
Finding a cycle of fixed length
Feb 25, 2010
answer
23
Suggestions for good notation
Oct 21, 2010
answer
17
Existence of a zero-sum subset
Mar 2, 2010
answer
12
Most memorable titles
Nov 1, 2010
question
9
Equality of the sum of powers
Mar 1, 2010
question
7
Upper bound for size of subsets of a finite group that contains a sum-full set
Oct 31, 2010
answer
7
A question regarding the all pair shortest paths in weighted planar graphs
Apr 2, 2018
question
5
Is the generalized Erdős–Heilbronn problem true for finite cyclic groups?
Dec 15, 2010
Top network posts
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73
Common false beliefs in theoretical computer science
63
Are there any open problems left about DFAs?
53
Why do we consider log-space as a model of efficient computation (instead of polylog-space) ?
47
Common false beliefs in theoretical computer science
37
Efficiently computable function as a counter-example to Sarnak's Mobius conjecture