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  • Welcome to My New Blog

    July 3, 2019 by

    Hi all! I finally decided to have some blog with mathematical notes (I do not want to publish anything not concerning mathematics here, in particular this is why everything is assumed to be in “English”). I would continue on rus4.livejournal.com, but unfortunately livejournal does not support formulae and the easiest way to fix it seems… Read more

  • e⩽π

    July 14, 2019 by

    Mathematicians do like giving proofs of known results from some specific point of view. Here goes the combinatorial proof of the inequality To be precise, I define our heroes. is a length of a half-circle of the unit radius, and is the common point of the segments The idea is that for a positive integer… Read more

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