User contributions
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- 15:16, 6 October 2023 (diff | hist) . . (+512) . . N 1997 IMO Problems/Problem 4 (Created page with "==Problem== An <math>n \times n</math> matrix whose entries come from the set <math>S={1,2,...,2n-1}</math> is called a <math>\textit{silver}</math> matrix if, for each <math...")
- 15:10, 6 October 2023 (diff | hist) . . (+496) . . N 1997 IMO Problems/Problem 3 (Created page with "==Problem== Let <math>x_{1}</math>, <math>x_{2}</math>,...,<math>x_{n}</math> be real numbers satisfying the conditions <math>|x_{1}+x_{2}+...+x_{n}|=1</math> and <math>|x...")
- 15:05, 6 October 2023 (diff | hist) . . (+610) . . N 1997 IMO Problems/Problem 2 (Created page with "==Problem== The angle at <math>A</math> is the smallest angle of triangle <math>ABD</math>. The points <math>B</math> and <math>C</math> divide the circumcircle of the triang...")
- 15:01, 6 October 2023 (diff | hist) . . (+246) . . N 1996 IMO Problems/Problem 3 (Created page with "==Problem== Let <math>S</math> denote the set of nonnegative integers. Find all functions <math>f</math> from <math>S</math> to itself such that <math>f(m+f(n))=f(f(m))+f(n...")
- 14:58, 6 October 2023 (diff | hist) . . (+298) . . N 1996 IMO Problems/Problem 4 (Created page with "==Problem== The positive integers <math>a</math> and <math>b</math> are such that the numbers <math>15a+16b</math> and <math>16a-15b</math> are both squares of positive integ...")
- 14:55, 6 October 2023 (diff | hist) . . (+529) . . N 1996 IMO Problems/Problem 5 (Created page with "==Problem== Let <math>ABCDEF</math> be a convex hexagon such that <math>AB</math> is parallel to <math>DE</math>, <math>BD</math> is parallel to <math>EF</math>, and <math>CD...")
- 14:49, 6 October 2023 (diff | hist) . . (+429) . . N 1994 IMO Problems/Problem 5 (Created page with "==Problem== Let <math>S</math> be the set of real numbers strictly greater than <math>-1</math>. Find all functions <math>f:S \to S</math> satisfying the two conditions: 1....")
- 14:36, 6 October 2023 (diff | hist) . . (+727) . . N 1993 IMO Problems/Problem 6 (Created page with "==Problem == There are <math>n</math> lamps <math>L_0, \ldots , L_{n-1}</math> in a circle (<math>n > 1</math>), where we denote <math>L_{n+k} = L_k</math>. (A lamp at all tim...")
- 14:34, 6 October 2023 (diff | hist) . . (+558) . . N 1993 IMO Problems/Problem 3 (Created page with "==Problem == On an infinite chessboard, a game is played as follows. At the start, <math>n^2</math> pieces are arranged on the chessboard in an <math>n</math> by <math>n</math...")
- 14:30, 6 October 2023 (diff | hist) . . (+28) . . 1992 IMO Problems/Problem 1 (→Problem)
- 14:29, 6 October 2023 (diff | hist) . . (+13) . . 1991 IMO Problems/Problem 5 (→Solution)
- 14:22, 6 October 2023 (diff | hist) . . (+282) . . N 1991 IMO Problems/Problem 5 (Created page with "===Problem === Let <math> \,ABC\,</math> be a triangle and <math> \,P\,</math> an interior point of <math> \,ABC\,</math>. Show that at least one of the angles <math> \,\angle...")
- 19:35, 5 October 2023 (diff | hist) . . (0) . . 1979 USAMO Problems/Problem 2 (→Solution)
- 19:32, 5 October 2023 (diff | hist) . . (0) . . 1973 IMO Problems/Problem 2 (→Solution)
- 07:50, 4 October 2023 (diff | hist) . . (+42) . . 2023 IMO Problems/Problem 3 (→Solution)
- 07:46, 4 October 2023 (diff | hist) . . (+1) . . 2023 IMO Problems/Problem 3 (→Solution)
- 07:45, 4 October 2023 (diff | hist) . . (+1) . . 2023 IMO Problems/Problem 3 (→Solution)
- 07:44, 4 October 2023 (diff | hist) . . (+12) . . 2023 IMO Problems/Problem 3 (→Solution)
- 13:18, 3 October 2023 (diff | hist) . . (+25) . . 2023 IMO Problems/Problem 3 (→Solution)
- 13:11, 3 October 2023 (diff | hist) . . (+1) . . 2023 IMO Problems/Problem 3 (→Solution)
- 13:10, 3 October 2023 (diff | hist) . . (0) . . 2023 IMO Problems/Problem 3 (→Solution)
- 13:08, 3 October 2023 (diff | hist) . . (0) . . 2023 IMO Problems/Problem 3 (→Solution)
- 13:07, 3 October 2023 (diff | hist) . . (+13) . . 2023 IMO Problems/Problem 3 (→Solution)
- 13:07, 3 October 2023 (diff | hist) . . (+43) . . 2023 IMO Problems/Problem 3 (→Solution)
- 13:06, 3 October 2023 (diff | hist) . . (-84) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:51, 3 October 2023 (diff | hist) . . (+1) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:48, 3 October 2023 (diff | hist) . . (+14) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:46, 3 October 2023 (diff | hist) . . (+151) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:40, 3 October 2023 (diff | hist) . . (+26) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:39, 3 October 2023 (diff | hist) . . (+47) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:39, 3 October 2023 (diff | hist) . . (+52) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:36, 3 October 2023 (diff | hist) . . (+13) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:35, 3 October 2023 (diff | hist) . . (+53) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:33, 3 October 2023 (diff | hist) . . (0) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:33, 3 October 2023 (diff | hist) . . (+650) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:21, 3 October 2023 (diff | hist) . . (+23) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:20, 3 October 2023 (diff | hist) . . (+187) . . 2023 IMO Problems/Problem 3 (→Solution)
- 12:13, 3 October 2023 (diff | hist) . . (+763) . . 2023 IMO Problems/Problem 3 (→Solution)
- 11:45, 3 October 2023 (diff | hist) . . (+119) . . 2023 IMO Problems/Problem 3 (→Solution)
- 11:40, 3 October 2023 (diff | hist) . . (+11) . . 2023 IMO Problems/Problem 3 (→Solution)
- 11:40, 3 October 2023 (diff | hist) . . (+137) . . 2023 IMO Problems/Problem 3 (→Solution)
- 11:33, 3 October 2023 (diff | hist) . . (+11) . . 2023 IMO Problems/Problem 3 (→Solution)
- 11:33, 3 October 2023 (diff | hist) . . (0) . . 2023 IMO Problems/Problem 3 (→Solution)
- 11:32, 3 October 2023 (diff | hist) . . (+111) . . 2023 IMO Problems/Problem 3 (→Solution)
- 11:30, 3 October 2023 (diff | hist) . . (+101) . . 2023 IMO Problems/Problem 3 (→Solution)
- 11:29, 3 October 2023 (diff | hist) . . (+111) . . 2023 IMO Problems/Problem 3 (→Solution)
- 11:25, 3 October 2023 (diff | hist) . . (+105) . . 2023 IMO Problems/Problem 3 (→Solution)
- 09:52, 3 October 2023 (diff | hist) . . (+92) . . 2023 IMO Problems/Problem 3 (→Solution)
- 09:49, 3 October 2023 (diff | hist) . . (+1) . . 2023 IMO Problems/Problem 3 (→Solution)
- 09:49, 3 October 2023 (diff | hist) . . (+83) . . 2023 IMO Problems/Problem 3 (→Solution)
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