– 3 лекции по теории множеств от аспиранта кафедры общей математики факультета ВМК МГУ; – 3 практических задания для закрепления материала и ссылки на дополнительные материалы – лекция по комбинаторике от кандидата физико-математических наук, доцента факультета ВМК МГУ
– 3 лекции по теории множеств от аспиранта кафедры общей математики факультета ВМК МГУ; – 3 практических задания для закрепления материала и ссылки на дополнительные материалы – лекция по комбинаторике от кандидата физико-математических наук, доцента факультета ВМК МГУ
Telegram and Signal Havens for Right-Wing Extremists
Since the violent storming of Capitol Hill and subsequent ban of former U.S. President Donald Trump from Facebook and Twitter, the removal of Parler from Amazon’s servers, and the de-platforming of incendiary right-wing content, messaging services Telegram and Signal have seen a deluge of new users. In January alone, Telegram reported 90 million new accounts. Its founder, Pavel Durov, described this as “the largest digital migration in human history.” Signal reportedly doubled its user base to 40 million people and became the most downloaded app in 70 countries. The two services rely on encryption to protect the privacy of user communication, which has made them popular with protesters seeking to conceal their identities against repressive governments in places like Belarus, Hong Kong, and Iran. But the same encryption technology has also made them a favored communication tool for criminals and terrorist groups, including al Qaeda and the Islamic State.
How Does Telegram Make Money?
Telegram is a free app and runs on donations. According to a blog on the telegram: We believe in fast and secure messaging that is also 100% free. Pavel Durov, who shares our vision, supplied Telegram with a generous donation, so we have quite enough money for the time being. If Telegram runs out, we will introduce non-essential paid options to support the infrastructure and finance developer salaries. But making profits will never be an end-goal for Telegram.
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