High Quality Content by WIKIPEDIA articles! Squaring the square is the problem of tiling an integral square using only other integral squares. (An integral square is a square whose sides have integer length.) The name was coined in a humorous analogy with squaring the circle. Squaring the square is an easy task unless additional conditions are set. The most studied restriction is that the squaring be perfect, meaning that the sizes of the smaller squares are all different. A related problem is...
High Quality Content by WIKIPEDIA articles! Squaring the square is the problem of tiling an integral square using only other integral squares. (An integral square is a square whose sides have integer length.) The name was coined in a humorous analogy with squaring the circle. Squaring the square is an easy task unless additional conditions are set. The most studied restriction is that the squaring be perfect, meaning that the sizes of the smaller squares are all different. A related problem is squaring the plane, which can be done even with the restriction that each natural number occurs exactly once as a size of a square in the tiling. A "perfect" squared square is a square such that each of the smaller squares has a different size. It is first recorded as being studied by R. L. Brooks, C. A. B. Smith, A. H. Stone, and W. T. Tutte, at Cambridge University. They transformed the square tiling into an equivalent electrical circuit — they called it "Smith diagram" — by considering the squares as resistors that connected to their neighbors at their top and bottom edges, and then applied Kirchhoff's circuit laws and circuit decomposition techniques to that circuit.
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Предприниматель и общественный деятель Александр Лебедев в художественно-публицистической форме вспоминает свой жизненный путь, начиная от службы во внешней разведке в Лондоне и заканчивая отбыванием исправительных работ в тульской деревне по приговору суда за драку с бизнесменом Сергеем Полонским на канале НТВ. Автор открывает читателю разные стороны жизни российской и мировой политической и...
Друзья Шмяка организовали рок-группу «Цап-царапки». А что делать котёнку, который не умеет играть ни на одном музыкальном инструменте и петь? Неужели он так и останется в стороне? Нет, у каждого есть свой талант, и каждый может найти своё призвание. Что же придумал Шмяк, чтобы принять участие в общем деле?
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