در این لینک می توانید به مجموعه متنوعی از درسنامه‌ها، یادداشت‌ها و کتاب‌های رایگان ریاضی تحت نظر انجمن ریاضی امریکا دست‌یابید. از دکتر علی شکیبازاده برای معرفی این مجموعه سپاس‌گزاریم.
در این لینک می توانید به مجموعه متنوعی از درسنامه‌ها، یادداشت‌ها و کتاب‌های رایگان ریاضی تحت نظر انجمن ریاضی امریکا دست‌یابید. از دکتر علی شکیبازاده برای معرفی این مجموعه سپاس‌گزاریم.
After fleeing Russia, the brothers founded Telegram as a way to communicate outside the Kremlin's orbit. They now run it from Dubai, and Pavel Durov says it has more than 500 million monthly active users. The next bit isn’t clear, but Durov reportedly claimed that his resignation, dated March 21st, was an April Fools’ prank. TechCrunch implies that it was a matter of principle, but it’s hard to be clear on the wheres, whos and whys. Similarly, on April 17th, the Moscow Times quoted Durov as saying that he quit the company after being pressured to reveal account details about Ukrainians protesting the then-president Viktor Yanukovych. 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. So, uh, whenever I hear about Telegram, it’s always in relation to something bad. What gives? The original Telegram channel has expanded into a web of accounts for different locations, including specific pages made for individual Russian cities. There's also an English-language website, which states it is owned by the people who run the Telegram channels.
from nl
