Difference between revisions of "Main Page"
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| − | __NOTOC__ __NOEDITSECTION__ <div class="frontlink" style="background-color:#204079; color:#ffffff; font-size: 110%; padding-left:15px; padding-right:15px; padding-bottom:10px | + | __NOTOC__ __NOEDITSECTION__ <div class="frontlink" style="background-color:#204079; 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> |
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. | 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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| + | <div class="frontlink" style="background-color:darkred; color:#ffffff; padding: 10px; margin: 10px 0;">The wiki is currently not editable. It is currently scheduled to be editable again on November 21, but this date is subject to change. | ||
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Revision as of 16:45, 15 November 2018
Welcome to the AoPS Wiki!
The AoPS Wiki project is administered by the Art of Problem Solving for supporting educational content useful to avid math students.
The wiki is currently not editable. It is currently scheduled to be editable again on November 21, but this date is subject to change.
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 
is 
and for 
it is simply 
. Find the sum of all such alternating sums for 
.
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.
