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integral symbol : ウィキペディア英語版 | integral symbol
The integral symbol: :(unicode:∫) (Unicode), (LaTeX) is used to denote integrals and antiderivatives in mathematics. The notation was introduced by the German mathematician Gottfried Wilhelm Leibniz towards the end of the 17th century. The symbol was based on the (unicode:ſ) (long s) character, and was chosen because Leibniz thought of the integral as an infinite sum of infinitesimal summands. == Typography in Unicode and LaTeX ==
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