User contributions
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- 16:34, 7 May 2010 (diff | hist) . . (0) . . 2010 USAMO Problems/Problem 3 (→Additional observations)
- 05:04, 7 May 2010 (diff | hist) . . (+5,844) . . N 2010 USAMO Problems/Problem 1 (Created page with '==Problem== Let <math>AXYZB</math> be a convex pentagon inscribed in a semicircle of diameter <math>AB</math>. Denote by <math>P, Q, R, S</math> the feet of the perpendiculars fr…')
- 01:24, 7 May 2010 (diff | hist) . . (-2) . . 2010 USAJMO Problems (→Problem 6)
- 00:54, 7 May 2010 (diff | hist) . . (+2,243) . . N 2010 USAJMO Problems/Problem 4 (Created page with '==Problem== A triangle is called a parabolic triangle if its vertices lie on a parabola <math>y = x^2</math>. Prove that for every nonnegative integer <math>n</math>, there is an…')
- 00:47, 7 May 2010 (diff | hist) . . (+2,495) . . N 2010 USAJMO Problems/Problem 5 (Created page with '==Problem== Two permutations <math>a_1, a_2, \ldots, a_{2010}</math> and <math>b_1, b_2, \ldots, b_{2010}</math> of the numbers <math>1, 2, \ldots, 2010</math> are said to inters…')
- 00:40, 7 May 2010 (diff | hist) . . (+2,955) . . N 2010 USAJMO Problems/Problem 2 (Created page with '==Problem== Let <math>n > 1</math> be an integer. Find, with proof, all sequences <math>x_1, x_2, \ldots, x_{n-1}</math> of positive integers with the following three properties:…')
- 00:34, 7 May 2010 (diff | hist) . . (+8) . . 2010 USAJMO Problems/Problem 1 (→Proof)
- 00:32, 7 May 2010 (diff | hist) . . (+3,040) . . N 2010 USAJMO Problems/Problem 1 (Created page with '==Problem== A permutation of the set of positive integers <math>[n] = {1,2,\ldots,n}</math> is a sequence <math>(a_1,a_2,\ldots,a_n)</math> such that each element of <math>[n]</m…')
- 00:19, 7 May 2010 (diff | hist) . . (+3,183) . . N 2010 USAJMO Problems (Created page with '=Day 1= ==Problem 1== A permutation of the set of positive integers <math>[n] = {1,2,\ldots,n}</math> is a sequence <math>(a_1,a_2,\ldots,a_n)</math> such that each element of <m…')
- 23:30, 6 May 2010 (diff | hist) . . (-3) . . 2010 USAJMO (→Resource)
- 12:58, 6 May 2010 (diff | hist) . . (+4) . . 2010 USAMO Problems/Problem 3 (→Proof)
- 12:57, 6 May 2010 (diff | hist) . . (-96) . . 2010 USAMO Problems/Problem 3 (→Proof)
- 12:53, 6 May 2010 (diff | hist) . . (-8) . . 2010 USAMO Problems/Problem 3 (→Proof)
- 12:48, 6 May 2010 (diff | hist) . . (-2) . . 2010 USAMO Problems/Problem 4 (→Problem)
- 12:47, 6 May 2010 (diff | hist) . . (+473) . . 2010 USAMO Problems/Problem 4 (→Solution)
- 04:23, 6 May 2010 (diff | hist) . . (+365) . . 2010 USAMO Problems/Problem 3 (Minor tweaks and summary)
- 03:46, 6 May 2010 (diff | hist) . . (+890) . . 2010 USAMO Problems/Problem 3 (Derived formula for leading term of limit sequence)
- 19:01, 5 May 2010 (diff | hist) . . (+4,913) . . 2010 USAMO Problems/Problem 3 (Additional notes on the limit sequence)
- 17:19, 5 May 2010 (diff | hist) . . (-129) . . 2010 USAMO Problems/Problem 3 (Redundant)
- 17:12, 5 May 2010 (diff | hist) . . (+795) . . 2010 USAMO Problems/Problem 3 (Final copy after proof-reading...)
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