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Простые числа в послании из космоса от внеземной цивилизации
Если у разумных инопланетян есть понятие о числах, у них наверняка должна быть и базовая математика: сложение, вычитание, умножение, деление. Если у них есть умножение и деление, они должны понимать концепцию простых чисел — таких, которые делятся только на самих себя и единицу. В фильме «Контакт» (1997) перехваченное сообщение от инопланетян начинается с последовательности простых чисел: 2, 3, 5, 7, 11, 13, 17, 19, 23, и т.д.
Простые числа в послании из космоса от внеземной цивилизации
Если у разумных инопланетян есть понятие о числах, у них наверняка должна быть и базовая математика: сложение, вычитание, умножение, деление. Если у них есть умножение и деление, они должны понимать концепцию простых чисел — таких, которые делятся только на самих себя и единицу. В фильме «Контакт» (1997) перехваченное сообщение от инопланетян начинается с последовательности простых чисел: 2, 3, 5, 7, 11, 13, 17, 19, 23, и т.д.
#астрономия #математика #художественный_фильм
BY ∀x, y, z
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Individual messages can be fully encrypted. But the user has to turn on that function. It's not automatic, as it is on Signal and WhatsApp. Apparently upbeat developments in Russia's discussions with Ukraine helped at least temporarily send investors back into risk assets. Russian President Vladimir Putin said during a meeting with his Belarusian counterpart Alexander Lukashenko that there were "certain positive developments" occurring in the talks with Ukraine, according to a transcript of their meeting. Putin added that discussions were happening "almost on a daily basis." The channel appears to be part of the broader information war that has developed following Russia's invasion of Ukraine. The Kremlin has paid Russian TikTok influencers to push propaganda, according to a Vice News investigation, while ProPublica found that fake Russian fact check videos had been viewed over a million times on Telegram. Telegram, which does little policing of its content, has also became a hub for Russian propaganda and misinformation. Many pro-Kremlin channels have become popular, alongside accounts of journalists and other independent observers. Since its launch in 2013, Telegram has grown from a simple messaging app to a broadcast network. Its user base isn’t as vast as WhatsApp’s, and its broadcast platform is a fraction the size of Twitter, but it’s nonetheless showing its use. While Telegram has been embroiled in controversy for much of its life, it has become a vital source of communication during the invasion of Ukraine. But, if all of this is new to you, let us explain, dear friends, what on Earth a Telegram is meant to be, and why you should, or should not, need to care.
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