User contributions
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- 11:10, 22 July 2012 (diff | hist) . . (-6) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:10, 22 July 2012 (diff | hist) . . (+2) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:09, 22 July 2012 (diff | hist) . . (0) . . 2011 IMO Problems/Problem 4 (→Solution)
- 11:09, 22 July 2012 (diff | hist) . . (+1,515) . . 2011 IMO Problems/Problem 4
- 00:40, 22 July 2012 (diff | hist) . . (+9) . . User talk:Baijiangchen (→Sam's stuff)
- 00:23, 22 July 2012 (diff | hist) . . (+19) . . User:Baijiangchen (current)
- 00:22, 22 July 2012 (diff | hist) . . (+137) . . N User:Baijiangchen (Created page with "If: <math>W(0):=1</math> <math>W(n):=\sum_{i=0}^{n-1}({n-1 \choose i}W(i)(x-i-1)!(2^{x-i-1}))</math> Then: <math>W(n)=(2n-1)!!</math>")
- 00:21, 22 July 2012 (diff | hist) . . (+1) . . User talk:Baijiangchen
- 00:21, 22 July 2012 (diff | hist) . . (+1) . . User talk:Baijiangchen
- 00:21, 22 July 2012 (diff | hist) . . (+2) . . User talk:Baijiangchen
- 00:21, 22 July 2012 (diff | hist) . . (+13) . . User talk:Baijiangchen
- 00:20, 22 July 2012 (diff | hist) . . (+120) . . N User talk:Baijiangchen (Created page with "If: <math>W(0):=1</math> <math>W(n):=\sum_{i=0}^{n-1}({n-1 \choose i}W(i)(x-i-1)!(2^{x-i-1})</math> Then: W(n)=(2n-1)!!")
- 19:34, 29 May 2012 (diff | hist) . . (+26) . . m Proof by contradiction (→Euclid's proof of the infinitude of primes)
- 22:23, 17 May 2012 (diff | hist) . . (-14) . . m 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:22, 17 May 2012 (diff | hist) . . (+162) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:17, 17 May 2012 (diff | hist) . . (+53) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:15, 17 May 2012 (diff | hist) . . (+168) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:12, 17 May 2012 (diff | hist) . . (0) . . m 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:12, 17 May 2012 (diff | hist) . . (0) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:09, 17 May 2012 (diff | hist) . . (-15) . . 2010 AIME I Problems/Problem 4 (→Solution 1)
- 22:57, 14 April 2012 (diff | hist) . . (-38) . . m Without loss of generality
- 20:20, 11 April 2012 (diff | hist) . . (+8) . . m 1986 AIME Problems/Problem 11 (→Solution 2)
- 17:31, 11 April 2012 (diff | hist) . . (+9) . . m 1986 AIME Problems/Problem 10 (→Solution)
- 17:29, 11 April 2012 (diff | hist) . . (+9) . . m 1986 AIME Problems/Problem 10 (→Solution)
- 22:01, 10 April 2012 (diff | hist) . . (0) . . m 1986 AIME Problems/Problem 6 (→Solution)
- 22:01, 10 April 2012 (diff | hist) . . (+8) . . m 1986 AIME Problems/Problem 6 (→Solution)
- 22:00, 10 April 2012 (diff | hist) . . (+8) . . m 1986 AIME Problems/Problem 4 (→Solution)
- 23:20, 5 April 2012 (diff | hist) . . (+225) . . 1984 AIME Problems/Problem 11 (→Solution)
- 23:19, 5 April 2012 (diff | hist) . . (+379) . . 1984 AIME Problems/Problem 11 (→Solution)
- 23:16, 5 April 2012 (diff | hist) . . (-88) . . 1984 AIME Problems/Problem 11 (→Solution)
- 11:09, 5 April 2012 (diff | hist) . . (0) . . 1984 AIME Problems/Problem 7 (→Solution 1)
- 20:25, 12 March 2012 (diff | hist) . . (+37) . . Cobb County Math Meets (current)
- 20:23, 12 March 2012 (diff | hist) . . (0) . . m Cobb County Math Meets
- 20:14, 12 March 2012 (diff | hist) . . (+9) . . Kennesaw State University Mathematics Competition (→Format) (current)
- 20:14, 12 March 2012 (diff | hist) . . (+3) . . Kennesaw State University Mathematics Competition (→Format)
- 23:08, 28 February 2012 (diff | hist) . . (0) . . m 2003 AIME II Problems/Problem 9 (→Solution)
- 19:34, 28 February 2012 (diff | hist) . . (-18) . . m 2002 AMC 12A Problems/Problem 23 (→Solution)
- 19:30, 28 February 2012 (diff | hist) . . (+19) . . 2002 AMC 12A Problems/Problem 20 (→Solution)
- 23:43, 18 February 2012 (diff | hist) . . (+30) . . 2007 AMC 12A Problems/Problem 25 (→Solution 3)
- 23:38, 18 February 2012 (diff | hist) . . (-2) . . 2007 AMC 12A Problems/Problem 25 (→Solution 3)
- 23:38, 18 February 2012 (diff | hist) . . (+985) . . 2007 AMC 12A Problems/Problem 25 (→Solution)
- 23:00, 18 February 2012 (diff | hist) . . (+9) . . 2007 AMC 12A Problems/Problem 19 (→Solution 2)
- 22:54, 18 February 2012 (diff | hist) . . (0) . . m 2007 AMC 12A Problems/Problem 2 (→Solution)
- 22:53, 18 February 2012 (diff | hist) . . (+35) . . 2007 AMC 12A Problems/Problem 2 (→Solution)
- 22:52, 18 February 2012 (diff | hist) . . (-1) . . m 2007 AMC 12A Problems/Problem 2 (→Solution)
- 22:52, 18 February 2012 (diff | hist) . . (+11) . . 2007 AMC 12A Problems/Problem 2 (→Solution)
- 17:30, 18 February 2012 (diff | hist) . . (+24) . . 2010 AMC 12B Problems/Problem 9 (→Solution)
- 17:29, 18 February 2012 (diff | hist) . . (+99) . . 2010 AMC 12B Problems/Problem 9 (→Solution)
- 21:21, 17 February 2012 (diff | hist) . . (+39) . . 2006 AMC 12A Problems/Problem 25 (→Solution 2)
- 21:20, 17 February 2012 (diff | hist) . . (+42) . . 2006 AMC 12A Problems/Problem 25 (→Solution 2)
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