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Kevin P. Costello

Currently an Assistant Professor at UC-Riverside. Interested in Combinatorics, Probability, and especially in their intersection.
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100 If you break a stick at two points chosen uniformly, the probability the three resulting sticks form a triangle is 1/4. Is there a nice proof of this? Oct 23 '09
62 Tweetable Mathematics Apr 26 '17
31 What's a nice argument that shows the volume of the unit ball in $\mathbb R^n$ approaches 0? Dec 9 '09
21 The coupon collector's earworm Aug 28 '15
19 Cauchy-Schwarz and pigeonhole Oct 15 '09
17 Splitting Pythagorean triples Oct 19 '09
15 What are your favorite instructional counterexamples? Feb 9 '17
14 Number of invertible {0,1} real matrices? Mar 18 '10
13 What are some good examples of non-monotone graph properties? Sep 28 '10
13 A strange sum over bipartite graphs Mar 5 '12
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