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tropical saint petersburg | Telegram Webview: tropicalgeometry/951 -
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Шары касаются эллипса в его фокусах!

С наступающим Новым годом! Счастья, тепла, радости и, конечно, новых интересных математических сюжетов, а кому-то — и новых хороших теорем!



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https://etudes.ru/etudes/Dandelin-spheres/
Шары касаются эллипса в его фокусах!

С наступающим Новым годом! Счастья, тепла, радости и, конечно, новых интересных математических сюжетов, а кому-то — и новых хороших теорем!

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Pavel Durov, Telegram's CEO, is known as "the Russian Mark Zuckerberg," for co-founding VKontakte, which is Russian for "in touch," a Facebook imitator that became the country's most popular social networking site. The last couple days have exemplified that uncertainty. On Thursday, news emerged that talks in Turkey between the Russia and Ukraine yielded no positive result. But on Friday, Reuters reported that Russian President Vladimir Putin said there had been some “positive shifts” in talks between the two sides. In a statement, the regulator said the search and seizure operation was carried out against seven individuals and one corporate entity at multiple locations in Ahmedabad and Bhavnagar in Gujarat, Neemuch in Madhya Pradesh, Delhi, and Mumbai. At this point, however, Durov had already been working on Telegram with his brother, and further planned a mobile-first social network with an explicit focus on anti-censorship. Later in April, he told TechCrunch that he had left Russia and had “no plans to go back,” saying that the nation was currently “incompatible with internet business at the moment.” He added later that he was looking for a country that matched his libertarian ideals to base his next startup. The regulator said it had received information that messages containing stock tips and other investment advice with respect to selected listed companies are being widely circulated through websites and social media platforms such as Telegram, Facebook, WhatsApp and Instagram.
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