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This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of
mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join
the discussion and see a list of open tasks.MathematicsWikipedia:WikiProject MathematicsTemplate:WikiProject Mathematicsmathematics articles
This article is within the scope of WikiProject Engineering, a collaborative effort to improve the coverage of
engineering on Wikipedia. If you would like to participate, please visit the project page, where you can join
the discussion and see a list of open tasks.EngineeringWikipedia:WikiProject EngineeringTemplate:WikiProject EngineeringEngineering articles
This article is within the scope of WikiProject Russia, a
WikiProject dedicated to coverage of
Russia on Wikipedia. To participate: Feel free to edit the article attached to this page, join up at the
project page, or contribute to the
project discussion.RussiaWikipedia:WikiProject RussiaTemplate:WikiProject RussiaRussia articles