23 March 2015

• 15:5315:53, 23 March 2015 diff hist +187 N 1998 IMO Problems/Problem 6 Created page with "Consider all functions f from the set N of all positive integers into itself sat- isfying f (t 2 f (s)) = s(f (t)) 2 for all s and t in N . Determine the least possible value ..."
• 15:5315:53, 23 March 2015 diff hist +242 N 1998 IMO Problems/Problem 5 Created page with "Let I be the incenter of triangle ABC. Let the incircle of ABC touch the sides BC, CA, and AB at K, L, and M , respectively. The line through B parallel to M K meets the lines..."
• 15:5215:52, 23 March 2015 diff hist +93 N 1998 IMO Problems/Problem 4 Created page with "Determine all pairs (a, b) of positive integers such that ab 2 + b + 7 divides a 2 b + a + b."
• 15:5215:52, 23 March 2015 diff hist +181 N 1998 IMO Problems/Problem 3 Created page with "For any positive integer n, let d(n) denote the number of positive divisors of n (including 1 and n itself). Determine all positive integers k such that d(n 2 )/d(n) = k for s..."
• 15:5115:51, 23 March 2015 diff hist +294 N 1998 IMO Problems/Problem 2 Created page with "In a competition, there are a contestants and b judges, where b ≥ 3 is an odd integer. Each judge rates each contestant as either “pass” or “fail”. Suppose k is a nu..."
• 15:4815:48, 23 March 2015 diff hist +323 N 1998 IMO Problems/Problem 1 Created page with "In the convex quadrilateral ABCD, the diagonals AC and BD are perpendicular and the opposite sides AB and DC are not parallel. Suppose that the point P , where the perpendicul..."

5 December 2011

• 09:3709:37, 5 December 2011 diff hist +154 KGS math club clean-up. Thanks for nice contributions!

11 August 2010

• 14:1114:11, 11 August 2010 diff hist +296 KGS math club/solution 10 1 No edit summary current
• 14:0214:02, 11 August 2010 diff hist 0 KGS math club/solution 10 1 No edit summary
• 14:0014:00, 11 August 2010 diff hist +837 N KGS math club/solution 10 1 Created page with 'The coefficient of the tangent can be found from implicit derivative formula: <math>dy / dx = - (dz / dx) / (dz / dy) = - (2x + y) / (2y + x) </math> where <math> z = x^2 + y^2 +…'
• 13:5113:51, 11 August 2010 diff hist +259 KGS math club added a problem

14 April 2010

• 17:4617:46, 14 April 2010 diff hist +175 N Talk:KGS math club Created page with 'Hi, if anyone finds a way to make this editable to anyone including non-registered users, please do! (or let me know) --~~~~'

19 August 2009

• 14:0514:05, 19 August 2009 diff hist 0 KGS math club/hints 1 1 No edit summary current
• 14:0414:04, 19 August 2009 diff hist +3 KGS math club added 2 problems
• 14:0414:04, 19 August 2009 diff hist +53 N KGS math club/hints 9 1 added hint current
• 14:0314:03, 19 August 2009 diff hist +691 KGS math club added 2 problems

18 July 2009

• 05:3305:33, 18 July 2009 diff hist +10 KGS math club No edit summary
• 05:3305:33, 18 July 2009 diff hist +277 KGS math club No edit summary
• 05:2705:27, 18 July 2009 diff hist +587 KGS math club/solution 6 1 →Solution for rational weigths current
• 05:2105:21, 18 July 2009 diff hist +3 KGS math club/solution 6 1 →Solution for rational weigths
• 05:2005:20, 18 July 2009 diff hist +55 KGS math club/solution 6 1 →Solution for rational weigths
• 05:1605:16, 18 July 2009 diff hist +115 KGS math club No edit summary

27 July 2008

• 07:4007:40, 27 July 2008 diff hist +3,018 N KGS math club/solution 6 1 proof
• 06:3006:30, 27 July 2008 diff hist +586 KGS math club addition

6 July 2008

• 14:0614:06, 6 July 2008 diff hist +21 m KGS math club fixd again
• 14:0314:03, 6 July 2008 diff hist +12 m KGS math club whoops, fixed
• 14:0214:02, 6 July 2008 diff hist +655 KGS math club No edit summary

1 July 2008

• 12:3412:34, 1 July 2008 diff hist +382 KGS math club No edit summary
• 12:3312:33, 1 July 2008 diff hist +60 m KGS math club/solution 3 1 prettyprinting current

30 June 2008

• 14:3714:37, 30 June 2008 diff hist +681 KGS math club No edit summary

28 June 2008

• 12:2612:26, 28 June 2008 diff hist +13 m KGS math club/solution 1 1 No edit summary current
• 12:2512:25, 28 June 2008 diff hist +539 N KGS math club/solution 1 2 New page: Another solution: Colour every second item in the sequence blue and the rest red. Sum up the blue items and the red; which one is bigger, start playing that colour. Always take the item o... current
• 12:2512:25, 28 June 2008 diff hist +2,940 N KGS math club/solution 1 1 New page: Problem (by amkach): Consider the two player game that begins with an even length fixed random sequence of positive integers. Each player, in turn, removes either the first or last of th...
• 12:2412:24, 28 June 2008 diff hist +1,278 N KGS math club/hints 1 1 New page: <pre> Problem (by amkach): Consider the two player game that begins with an even length fixed random sequence of positive integers. Each player, in turn, removes either the first or last...
• 12:2412:24, 28 June 2008 diff hist +115 KGS math club No edit summary

20 June 2008

• 21:5521:55, 20 June 2008 diff hist −8 KGS math club clarification: removed the word "ordered"
• 20:3420:34, 20 June 2008 diff hist +9 KGS math club No edit summary
• 20:3220:32, 20 June 2008 diff hist +1,473 N KGS math club/solution 2 1 solution to a kgs problem
• 20:2920:29, 20 June 2008 diff hist +1,749 N KGS math club created a page for KGS math club problems & solutions