Расмотрим двумерный симплициальный комплекс на множестве вершин {0,1,...,40}: нужно провести все ребра, а затем вклеить те треугольники {i,j,k}, для которых i+j+k = 0, 1 или 3 (mod 41).
Ни за что не угадаете, какие у него первые гомологии
Расмотрим двумерный симплициальный комплекс на множестве вершин {0,1,...,40}: нужно провести все ребра, а затем вклеить те треугольники {i,j,k}, для которых i+j+k = 0, 1 или 3 (mod 41).
Ни за что не угадаете, какие у него первые гомологии
BY сладко стянул
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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." Russians and Ukrainians are both prolific users of Telegram. They rely on the app for channels that act as newsfeeds, group chats (both public and private), and one-to-one communication. Since the Russian invasion of Ukraine, Telegram has remained an important lifeline for both Russians and Ukrainians, as a way of staying aware of the latest news and keeping in touch with loved ones. There was another possible development: Reuters also reported that Ukraine said that Belarus could soon join the invasion of Ukraine. However, the AFP, citing a Pentagon official, said the U.S. hasn’t yet seen evidence that Belarusian troops are in Ukraine. He said that since his platform does not have the capacity to check all channels, it may restrict some in Russia and Ukraine "for the duration of the conflict," but then reversed course hours later after many users complained that Telegram was an important source of information. The picture was mixed overseas. Hong Kong’s Hang Seng Index fell 1.6%, under pressure from U.S. regulatory scrutiny on New York-listed Chinese companies. Stocks were more buoyant in Europe, where Frankfurt’s DAX surged 1.4%.
from br