Отношение длин касательных к эллипсу равно отношению радиусов вписанных окружностей (синих) и корню кубическому из отношения радиусов соприкасающихся окружностей (красных), касающихся эллипса в тех же точках. Второе утверждение - теорема Лиувилля.
Отношение длин касательных к эллипсу равно отношению радиусов вписанных окружностей (синих) и корню кубическому из отношения радиусов соприкасающихся окружностей (красных), касающихся эллипса в тех же точках. Второе утверждение - теорема Лиувилля.
Two days after Russia invaded Ukraine, an account on the Telegram messaging platform posing as President Volodymyr Zelenskiy urged his armed forces to surrender. 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. This provided opportunity to their linked entities to offload their shares at higher prices and make significant profits at the cost of unsuspecting retail investors. A Russian Telegram channel with over 700,000 followers is spreading disinformation about Russia's invasion of Ukraine under the guise of providing "objective information" and fact-checking fake news. Its influence extends beyond the platform, with major Russian publications, government officials, and journalists citing the page's posts. On February 27th, Durov posted that Channels were becoming a source of unverified information and that the company lacks the ability to check on their veracity. He urged users to be mistrustful of the things shared on Channels, and initially threatened to block the feature in the countries involved for the length of the war, saying that he didn’t want Telegram to be used to aggravate conflict or incite ethnic hatred. He did, however, walk back this plan when it became clear that they had also become a vital communications tool for Ukrainian officials and citizens to help coordinate their resistance and evacuations.
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