18 декабря в МИАН будет лекция для учителей Николая Николаевича Андреева о сходствах и различиях трех геометрий (евклидовой, сферической, геометрии Лобачевского)
18 декабря в МИАН будет лекция для учителей Николая Николаевича Андреева о сходствах и различиях трех геометрий (евклидовой, сферической, геометрии Лобачевского)
BY Непрерывное математическое образование
Warning: Undefined variable $i in /var/www/group-telegram/post.php on line 260
In 2014, Pavel Durov fled the country after allies of the Kremlin took control of the social networking site most know just as VK. Russia's intelligence agency had asked Durov to turn over the data of anti-Kremlin protesters. Durov refused to do so. But because group chats and the channel features are not end-to-end encrypted, Galperin said user privacy is potentially under threat. Some privacy experts say Telegram is not secure enough Just days after Russia invaded Ukraine, Durov wrote that Telegram was "increasingly becoming a source of unverified information," and he worried about the app being used to "incite ethnic hatred." For example, WhatsApp restricted the number of times a user could forward something, and developed automated systems that detect and flag objectionable content.
from in
