Difference between revisions of "Main Page"

 
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<big>'''MediaWiki has been successfully installed.'''</big>
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__NOTOC__  __NOEDITSECTION__  <div class="frontlink" style="background-color:#1b365d; color:#ffffff; font-size: 110%; padding-left:15px; padding-right:15px; padding-bottom:10px;"> <span style="font-size: 200%">'''Welcome to the AoPS Wiki!'''</span>
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The AoPS Wiki project is administered by the [[Art_of_Problem_Solving|<span style="color:#83a1d6;">Art of Problem Solving</span>]] for supporting educational content useful to avid math students.
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<big><big>Hi, Dave.</big></big>
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<div style="background-color:darkred;padding:10px;color:white;text-align:center;margin-top:10px;display:none">
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During AMC testing week, the AoPS Wiki is in read-only mode. No edits can be made.  
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Consult the [http://meta.wikipedia.org/wiki/MediaWiki_User%27s_Guide User's Guide] for information on using the wiki software.
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    <div style="height:calc(100% - 10px);background-color:#fff; overflow:hidden; margin:10px 5px 0 0;">
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      {{topics}}
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== Getting started ==
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    <div style="min-height: 160px; max-height: 260px;background-color:#fff; overflow:hidden; margin:10px auto 10px 5px;">
* [http://www.mediawiki.org/wiki/Help:Configuration_settings Configuration settings list]
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      {{weeklyproblem}}
* [http://www.mediawiki.org/wiki/Help:FAQ MediaWiki FAQ]
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* [http://mail.wikipedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
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    <div style="min-height: 192px; max-height: 370px;background-color:#fff; overflow:hidden; margin: 5px auto 0px 5px;">
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      {{recentchanges}}
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<div style="background-color:#ffffff; border-top:10px solid #1b365d; padding:0.5em; padding-top: 0px;margin-top:10px;">
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<h2 style="border-bottom: 1px solid; color: #1b365d;">New to the AoPS Wiki?</h2>
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If you don't know much about how to edit a wiki, you might want to read the [[AoPS_Wiki:Tutorial|tutorial]] and the [[Help:Contents|help files]]. You can also read [[AoPS_Wiki:What AoPSWiki is not|what AoPSWiki is not]]. Lastly, please read the [[AoPS_Wiki:Policy|policies]] of the AoPSWiki before editing, and [[AoPS_Wiki:What makes AoPSWiki different|why AoPSWiki is different from other online resources]].
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AoPSWiki runs on the [[MediaWiki]] software.
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Latest revision as of 13:22, 13 November 2024

During AMC testing week, the AoPS Wiki is in read-only mode. No edits can be made.

Problem of the Week

1983 AIME, Problem 13

For $\{1, 2, 3, \ldots, n\}$ and each of its non-empty subsets a unique alternating sum is defined as follows. Arrange the numbers in the subset in decreasing order and then, beginning with the largest, alternately add and subtract successive numbers. For example, the alternating sum for $\{1, 2, 3, 6,9\}$ is $9-6+3-2+1=5$ and for $\{5\}$ it is simply $5$. Find the sum of all such alternating sums for $n=7$.

New to the AoPS Wiki?

If you don't know much about how to edit a wiki, you might want to read the tutorial and the help files. You can also read what AoPSWiki is not. Lastly, please read the policies of the AoPSWiki before editing, and why AoPSWiki is different from other online resources.

AoPSWiki runs on the MediaWiki software.