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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Given the pro-privacy stance of the platform, it’s taken as a given that it’ll be used for a number of reasons, not all of them good. And Telegram has been attached to a fair few scandals related to terrorism, sexual exploitation and crime. Back in 2015, Vox described Telegram as “ISIS’ app of choice,” saying that the platform’s real use is the ability to use channels to distribute material to large groups at once. Telegram has acted to remove public channels affiliated with terrorism, but Pavel Durov reiterated that he had no business snooping on private conversations. Oleksandra Matviichuk, a Kyiv-based lawyer and head of the Center for Civil Liberties, called Durov’s position "very weak," and urged concrete improvements. He adds: "Telegram has become my primary news source." Telegram has gained a reputation as the “secure” communications app in the post-Soviet states, but whenever you make choices about your digital security, it’s important to start by asking yourself, “What exactly am I securing? And who am I securing it from?” These questions should inform your decisions about whether you are using the right tool or platform for your digital security needs. Telegram is certainly not the most secure messaging app on the market right now. Its security model requires users to place a great deal of trust in Telegram’s ability to protect user data. For some users, this may be good enough for now. For others, it may be wiser to move to a different platform for certain kinds of high-risk communications. On December 23rd, 2020, Pavel Durov posted to his channel that the company would need to start generating revenue. In early 2021, he added that any advertising on the platform would not use user data for targeting, and that it would be focused on “large one-to-many channels.” He pledged that ads would be “non-intrusive” and that most users would simply not notice any change.
from pl
