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S.Markelov. Circles and parabolas

// А.Акопян пишет: «В книжке с картинками есть целая серия задач про параболы, для которых выполняются классические теоремы про окружности. Мало кто знает, но этот трюк обнаружил Серёжа. Сейчас это уже является базой для продвинутых олимпиадных геометров, но тогда это было полной неожиданностью.»



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S.Markelov. Circles and parabolas

// А.Акопян пишет: «В книжке с картинками есть целая серия задач про параболы, для которых выполняются классические теоремы про окружности. Мало кто знает, но этот трюк обнаружил Серёжа. Сейчас это уже является базой для продвинутых олимпиадных геометров, но тогда это было полной неожиданностью.»

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Given the pro-privacy stance of the platform, it’s taken as a given that it’ll be used for a number of reasons, not all of them good. And Telegram has been attached to a fair few scandals related to terrorism, sexual exploitation and crime. Back in 2015, Vox described Telegram as “ISIS’ app of choice,” saying that the platform’s real use is the ability to use channels to distribute material to large groups at once. Telegram has acted to remove public channels affiliated with terrorism, but Pavel Durov reiterated that he had no business snooping on private conversations. "For Telegram, accountability has always been a problem, which is why it was so popular even before the full-scale war with far-right extremists and terrorists from all over the world," she told AFP from her safe house outside the Ukrainian capital. But the Ukraine Crisis Media Center's Tsekhanovska points out that communications are often down in zones most affected by the war, making this sort of cross-referencing a luxury many cannot afford. "The argument from Telegram is, 'You should trust us because we tell you that we're trustworthy,'" Maréchal said. "It's really in the eye of the beholder whether that's something you want to buy into." On Telegram’s website, it says that Pavel Durov “supports Telegram financially and ideologically while Nikolai (Duvov)’s input is technological.” Currently, the Telegram team is based in Dubai, having moved around from Berlin, London and Singapore after departing Russia. Meanwhile, the company which owns Telegram is registered in the British Virgin Islands.
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