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Charles Chen's user avatar
Charles Chen's user avatar
Charles Chen
  • Member for 15 years, 2 months
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Undergraduate at UC Berkeley.
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18
Interesting applications of the pigeonhole principle
May 31, 2010
question
12
Notions of degree for maps $S^n \to S^n$?
Nov 11, 2009
question
10
Count of binary matrices that avoids a certain sub-matrix
Jul 3, 2010
question
8
12 balls weighing puzzle
Sep 17, 2010
answer
5
The probabilistic method - reference to less challenging questions
Jul 14, 2010
question
4
Singular points of an irreducible polynomial
Apr 5, 2010
answer
3
Algorithm for Ham Sandwich with Points
Nov 16, 2010
answer
1
Smith Normal Form and lower triangular Toeplitz Matrices
Sep 24, 2010
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22
Does a polynomial that's bounded below have a global minimum?
10
Convergence of $\sum_{n=1}^{\infty} \frac{\sin (n x)}{2^n}$
8
In TikZ, is it possible to nest matrices?