# User contributions

- 07:30, 9 June 2015 (diff | hist) . . (+99) . . Algebraic number theory
- 07:29, 9 June 2015 (diff | hist) . . (+241) . . Algebraic number theory
- 07:25, 9 June 2015
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**(+9,307)** . . N Algebraic number theory (Created page with "In mathematics, <b>Algebraic number theory</b> is the study of algebraic numbers and structures involving them, especially algebraic number fields. =Introduction...") - 06:04, 9 June 2015
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**(+8,510)** . . N Greedy algorithm (Created page with "In mathematics and computer science, a <b>greedy algorithm</b> is one that selects for the maximal immediate benefit, without regard for how this selection affects fut...") - 02:00, 8 June 2015 (diff | hist) . . (+276) . . Searching the community (→General searching tips)
- 01:52, 8 June 2015 (diff | hist) . . (+117) . . Searching the community (→Searching from the main webpage)
- 01:47, 8 June 2015
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**(+875)** . . Searching the community - 01:29, 8 June 2015 (diff | hist) . . (+16) . . Searching the community (→Customizing search queries)
- 01:25, 8 June 2015 (diff | hist) . . (+36) . . Searching the community (→Searching for LaTeX)
- 01:24, 8 June 2015 (diff | hist) . . (-2) . . Searching the community
- 01:21, 8 June 2015 (diff | hist) . . (+243) . . Searching the community
- 01:17, 8 June 2015 (diff | hist) . . (+250) . . N Search (disambiguation) (Created page with "<b>Search</b> could refer to: * Help:Searching - an explanation of how to search the AoPSWiki * Searching the community - a tutorial on how to effectively search ...") (current)
- 01:14, 8 June 2015 (diff | hist) . . (0) . . Search (Redirected page to Search (disambiguation))
- 01:12, 8 June 2015 (diff | hist) . . (+37) . . N Search (Redirected page to Searching the community)
- 01:12, 8 June 2015 (diff | hist) . . (0) . . How to use search in the community (Redirected page to Searching the community) (current)
- 01:11, 8 June 2015 (diff | hist) . . (+37) . . N How to use search in the community (Redirected page to Searching the Community)
- 01:08, 8 June 2015
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**(+19,987)** . . N Searching the community (Created page with "This article is an introduction to <b>searching</b> the [http://artofproblemsolving.com/community AoPS forums]. All searching takes place from one of three pages: the [http://...") - 21:08, 7 June 2015 (diff | hist) . . (0) . . File:Rrusczykposts2.png (BOGTRO uploaded a new version of "File:Rrusczykposts2.png") (current)
- 21:07, 7 June 2015 (diff | hist) . . (0) . . N File:Rrusczykposts2.png
- 21:07, 7 June 2015 (diff | hist) . . (0) . . N File:Rrusczykposts.png (current)
- 20:19, 7 June 2015 (diff | hist) . . (0) . . N File:Searchforum.png (current)
- 20:07, 7 June 2015 (diff | hist) . . (0) . . N File:Searchresult.png (current)
- 19:57, 7 June 2015 (diff | hist) . . (0) . . N File:Search2.png (current)
- 19:50, 7 June 2015 (diff | hist) . . (0) . . N File:Search.png (current)
- 15:11, 2 January 2014 (diff | hist) . . (+111) . . AoPS Wiki:FAQ (→I rated a post but the post rating does not appear on the post. Why?)
- 23:55, 13 July 2012 (diff | hist) . . (-3) . . User:BOGTRO (current)
- 23:53, 13 July 2012 (diff | hist) . . (-80) . . User:BOGTRO
- 15:53, 6 June 2011 (diff | hist) . . (+431) . . N 1998 AHSME Problems/Problem 29 (Created page with "== Problem 29 == A point <math>(x,y)</math> in the plane is called a lattice point if both <math>x</math> and <math>y</math> are integers. The area of the largest square that con...")
- 15:51, 6 June 2011 (diff | hist) . . (+433) . . N 1998 AHSME Problems/Problem 2 (Created page with "== Problem 2 == Letters <math>A,B,C,</math> and <math>D</math> represent four different digits selected from <math>0,1,2,\ldots ,9.</math> If <math>(A+B)/(C+D)</math> is an integ...")
- 15:51, 6 June 2011
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**(+529)** . . N 1998 AHSME Problems/Problem 16 (Created page with "== Problem 16 == The figure shown is the union of a circle and two semicircles of diameters <math>a</math> and <math>b</math>, all of whose centers are collinear. The ratio of th...") - 15:50, 6 June 2011 (diff | hist) . . (+366) . . N 1998 AHSME Problems/Problem 15 (Created page with "== Problem 15 == A regular hexagon and an equilateral triangle have equal areas. What is the ratio of the length of a side of the triangle to the length of a side of the hexagon?...")
- 15:50, 6 June 2011
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**(+516)** . . N 1998 AHSME Problems/Problem 14 (Created page with "== Problem 14 == A parabola has vertex of <math>(4,-5)</math> and has two <math>x-</math>intercepts, one positive, and one negative. If this parabola is the graph of <math>y = ax...") - 15:38, 6 June 2011
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**(+569)** . . N 1998 AHSME Problems/Problem 10 (Created page with "== Problem 10 == A large square is divided into a small square surrounded by four congruent rectangles as shown. The perimter of each of the congruent rectangles is <math>14</mat...") - 15:37, 6 June 2011
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**(+982)** . . N 1998 AHSME Problems/Problem 1 (Created page with "== Problem 1 == Each of the sides of five congruent rectangles is labeled with an integer. In rectangle A, <math>w = 4, x = 1, y = 6, z = 9</math>. In rectangle B, <math>w = 1, x...") - 15:30, 6 June 2011
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**(+535)** . . N 1998 AHSME Problems/Problem 9 (Created page with "== Problem 9 == A speaker talked for sixty minutes to a full auditorium. Twenty percent of the audience heard the entire talk and ten percent slept through the entire talk. Half ...") - 15:30, 6 June 2011 (diff | hist) . . (+326) . . N 1998 AHSME Problems/Problem 7 (Created page with "== Problem 7 == If <math>N > 1</math>, then <math>\sqrt[3]{N\sqrt[3]{N\sqrt[3]{N}}} =</math> <math> \mathrm{(A) \ } N^{\frac 1{27}} \qquad \mathrm{(B) \ } N^{\frac 1{9}} \qquad ...")
- 15:25, 6 June 2011 (diff | hist) . . (+328) . . N 1998 AHSME Problems/Problem 6 (Created page with "== Problem 6 == If <math>1998</math> is written as a product of two positive integers whose difference is as small as possible, then the difference is <math> \mathrm{(A) \ }8 \...")
- 15:25, 6 June 2011 (diff | hist) . . (+445) . . N 1998 AHSME Problems/Problem 3 (Created page with "== Problem 3 == If <math>\texttt{a,b,}</math> and <math>\texttt{c}</math> are digits for which <center><math>\begin{tabular}{r}&\ \texttt{7 a 2}\\ &- \texttt{4 8 b} \\ \hline ...")
- 15:22, 6 June 2011
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**(+788)** . . N 2011 AMC 10B Problems/Problem 25 (Created page with "== Problem 25 == Let <math>T_1</math> be a triangle with sides <math>2011, 2012,</math> and <math>2013</math>. For <math>n \ge 1</math>, if <math>T_n = \triangle ABC</math> and ...") - 15:16, 6 June 2011
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**(+607)** . . N 2011 AMC 10B Problems/Problem 24 (Created page with "== Problem 24 == A lattice point in an <math>xy</math>-coordinate system in any point <math>(x, y)</math> where both <math>x</math> and <math>y</math> are integers. The graph of...") - 14:58, 6 June 2011 (diff | hist) . . (+218) . . AoPS Wiki talk:Problem of the Day/June 7, 2011 (→Solution) (current)
- 21:27, 31 May 2011 (diff | hist) . . (+27) . . 2010 AMC 12B Problems/Problem 20 (→Solution)
- 15:59, 31 May 2011 (diff | hist) . . (+25) . . 2010 AMC 12B Problems/Problem 20 (→Solution)
- 15:25, 31 May 2011
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**(+937)** . . 2010 AMC 12B Problems/Problem 20 (→Solution) - 18:08, 28 May 2011 (diff | hist) . . (-24) . . User:BOGTRO
- 22:15, 6 May 2011 (diff | hist) . . (+45) . . MATHCOUNTS (→Past Winners)
- 22:14, 6 May 2011 (diff | hist) . . (+71) . . MATHCOUNTS (→Past Winners)
- 16:37, 2 May 2011 (diff | hist) . . (+82) . . User:BOGTRO
- 19:42, 1 May 2011
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**(+1,207)** . . Overcounting - 16:36, 1 May 2011 (diff | hist) . . (+16) . . User:BOGTRO
- 16:11, 9 March 2011 (diff | hist) . . (+31) . . MATHCOUNTS (→Target Round)
- 13:34, 7 February 2011
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**(+815)** . . N 2003 AMC 12A Problems/Problem 14 (Created page with 'Since the area of square ABCD is 16, the side length must be 4. Thus, the side length of triangle AKB is 4, and the height of AKB, and thus DMC, is <math>2\sqrt{3}</math>. The …') - 13:30, 7 February 2011 (diff | hist) . . (+238) . . 2003 AMC 12A Problems (→Problem 23)
- 13:25, 7 February 2011 (diff | hist) . . (+349) . . 2003 AMC 12A Problems (→Problem 20)
- 13:24, 7 February 2011
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**(+656)** . . 2003 AMC 12A Problems (→Problem 19) - 13:21, 7 February 2011 (diff | hist) . . (+402) . . 2003 AMC 12A Problems (→Problem 16)
- 13:19, 7 February 2011
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**(+717)** . . 2003 AMC 12A Problems (→Problem 14) - 21:00, 9 April 2009 (diff | hist) . . (+48) . . User:BOGTRO
- 23:50, 17 March 2009 (diff | hist) . . (+48) . . N User:Fantasylover (New page: This is Fantasylover. Fantasylover is a failure.)
- 23:49, 17 March 2009 (diff | hist) . . (+18) . . N User:BOGTRO (New page: My name is BOGTRO.)
- 17:56, 7 January 2009 (diff | hist) . . (+162) . . N 2000 AMC 10 Problems/Problem 15 (New page: <math>ab=a-b</math> <math>\frac{a}{b}+\frac{b}{a}-ab=\frac{a^2+b^2}{ab}-ab=\frac{-a^2b^2+a^2+b^2}{ab}</math> <math>\frac{-a^2+2ab-b^2+a^2+b^2}{ab}=2</math>. E.)
- 17:54, 7 January 2009
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**(+616)** . . N 2000 AMC 10 Problems/Problem 14 (New page: 71, 76, 80, 82, 91. The sum of the first 2 must be even, so we must choose 2 evens or the 2 odds. Let us look at the numbers (mod 3). 2,1,2,1,1. If we choose the two odds, the next num...) - 17:49, 7 January 2009 (diff | hist) . . (+256) . . N 2000 AMC 10 Problems/Problem 13 (New page: The question is rather ambiguous, however I will assume that the pegs of the same color are distinguishable. Clearly, there is only 1 possible ordering if the colors are indistinguishable...)
- 17:47, 7 January 2009 (diff | hist) . . (+269) . . N 2000 AMC 10 Problems/Problem 12 (New page: We have a recursion: <math>A_n=A_{n-1}+4(n-1)</math>. I.E. we add increasing multiples of <math>4</math> each time we go up a figure. So, to go from Figure 0 to 100, we add <math>4 \cd...)
- 15:06, 7 January 2009 (diff | hist) . . (+426) . . N 2000 AMC 10 Problems/Problem 11 (New page: Two prime numbers between <math>4</math> and <math>18</math> are both odd. odd*odd=odd. odd-odd-odd=odd. Thus, we can discard the even choices. <math>ab-a-b=(a-1)(b-1)-1</math>. <mat...)
- 15:03, 7 January 2009 (diff | hist) . . (+197) . . N 2000 AMC 10 Problems/Problem 10 (New page: The largest possible value for <math>x</math> is <math>9</math>. The smallest is <math>3</math>. <math>9-3=6</math>. <math>8</math> is the smallest that cannot be made (of the choices li...)
- 15:03, 7 January 2009 (diff | hist) . . (+4) . . 2000 AMC 10 Problems/Problem 9
- 15:02, 7 January 2009 (diff | hist) . . (+105) . . N 2000 AMC 10 Problems/Problem 9 (New page: <math>|x-2|=p</math> <math>x<2</math>, so <math>2-x=p</math>. <math>x+p=2</math>. <math>x-p=2-2p</math>.)
- 15:02, 7 January 2009 (diff | hist) . . (+3) . . 2000 AMC 10 Problems/Problem 8
- 15:01, 7 January 2009 (diff | hist) . . (+188) . . N 2000 AMC 10 Problems/Problem 8 (New page: Let <math>f</math> be the number of freshman and s be the number of sophomores. <math>\frac{2}{5}f=\frac{4}{5}s</math>. <math>f=2s</math>. There are twice as many freshman as sophomores.)
- 15:00, 7 January 2009 (diff | hist) . . (+4) . . 2000 AMC 10 Problems/Problem 7
- 15:00, 7 January 2009
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**(+576)** . . N 2000 AMC 10 Problems/Problem 7 (New page: <asy> draw((0,2)--(3.4,2)--(3.4,0)--(0,0)--cycle); draw((0,0)--(1.3,2)); draw((0,0)--(3.4,2)); dot((0,0)); dot((0,2)); dot((3.4,2)); dot((3.4,0)); dot((1.3,2)); label("$A$",(0,2),NW); labe...) - 14:57, 7 January 2009 (diff | hist) . . (0) . . 2000 AMC 10 Problems/Problem 6
- 14:57, 7 January 2009 (diff | hist) . . (+158) . . N 2000 AMC 10 Problems/Problem 6 (New page: The pattern of the units digits are 1,1,2,3,5,8,3,1,4,5,9,4,3,7,0,7,7,4,1,5,6 In order of appearance: <math>1,2,3,5,8,4,9,7,0,6</math>. 6 is the last. D.)
- 14:55, 7 January 2009 (diff | hist) . . (+414) . . N 2000 AMC 10 Problems/Problem 5 (New page: (a) Clearly does not change, as <math>MN=\frac{1}{2}AB</math>. Since <math>AB</math> does not change, neither does <math>MN</math>. (b) Obviously, the perimetar changes. (c) The area cle...)
- 14:53, 7 January 2009 (diff | hist) . . (+214) . . N 2000 AMC 10 Problems/Problem 4 (New page: Let <math>x</math> be the fixed fee, and <math>y</math> be the amount she pays for the minutes she used in the first month. <math>x+y=12.48</math> <math>x+2y=17.54</math>. <math>y=5.06</...)
- 14:52, 7 January 2009 (diff | hist) . . (+124) . . N 2000 AMC 10 Problems/Problem 3 (New page: <math>x \cdot .8 \cdot .8=32</math> <math>x \cdot .64=32</math> <math>x \cdot \frac{32}{50}=32</math> <math>x=50</math>. B.)
- 14:51, 7 January 2009 (diff | hist) . . (0) . . 2000 AMC 10 Problems/Problem 2
- 14:51, 7 January 2009 (diff | hist) . . (+91) . . N 2000 AMC 10 Problems/Problem 2 (New page: <math>2000 \cdot 2000^{2000}=2000^1 \cdot 2000^{2000}=2000^{2000+1}=2000^{2001}</math>. B.)
- 14:50, 7 January 2009 (diff | hist) . . (+103) . . N 2000 AMC 10 Problems/Problem 1 (New page: 2001=1*3*667=3*23*29 1+3+667=671 3+23+29=55 1+29+69=99 1+23+87=111 Clearly, 671, or E is the largest.)
- 17:45, 10 August 2008 (diff | hist) . . (+413) . . 2008 AMC 10B Problems/Problem 15
- 17:42, 10 August 2008 (diff | hist) . . (+131) . . 2008 AMC 10B Problems/Problem 10 (→Problem)
- 17:41, 10 August 2008 (diff | hist) . . (-86) . . 2008 AMC 10B Problems/Problem 10 (→Solution)
- 17:38, 10 August 2008 (diff | hist) . . (-85) . . 2008 AMC 10B Problems/Problem 10 (→Problem)
- 17:37, 10 August 2008
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**(+833)** . . 2008 AMC 10B Problems/Problem 12 - 17:35, 10 August 2008
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**(-522)** . . 2008 AMC 10B Problems/Problem 11 (→Problem) - 17:34, 10 August 2008 (diff | hist) . . (+134) . . 2008 AMC 10B Problems/Problem 11 (→Solution)
- 17:34, 10 August 2008 (diff | hist) . . (+244) . . 2008 AMC 10B Problems/Problem 11 (→Problem)
- 17:33, 10 August 2008
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**(+832)** . . 2008 AMC 10B Problems/Problem 11 - 17:26, 10 August 2008
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**(+620)** . . 2008 AMC 10B Problems/Problem 10