«Из плиток этой мозаики, как их ни перекладывай, составить можно только непериодические замощения плоскости. Также замощения Робинсона обладают свойством квазипериодичности: любой конечный фрагмент повторяется в замощении бесконечное число раз. А всего различных замощений плоскости плитками Робинсона несчетное число. (…) Существует ли апериодическое протомножество, состоящее ровно из одной плитки, неизвестно до сих пор.»
«Из плиток этой мозаики, как их ни перекладывай, составить можно только непериодические замощения плоскости. Также замощения Робинсона обладают свойством квазипериодичности: любой конечный фрагмент повторяется в замощении бесконечное число раз. А всего различных замощений плоскости плитками Робинсона несчетное число. (…) Существует ли апериодическое протомножество, состоящее ровно из одной плитки, неизвестно до сих пор.»
For Oleksandra Tsekhanovska, head of the Hybrid Warfare Analytical Group at the Kyiv-based Ukraine Crisis Media Center, the effects are both near- and far-reaching. 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. At its heart, Telegram is little more than a messaging app like WhatsApp or Signal. But it also offers open channels that enable a single user, or a group of users, to communicate with large numbers in a method similar to a Twitter account. This has proven to be both a blessing and a curse for Telegram and its users, since these channels can be used for both good and ill. Right now, as Wired reports, the app is a key way for Ukrainians to receive updates from the government during the invasion. "There is a significant risk of insider threat or hacking of Telegram systems that could expose all of these chats to the Russian government," said Eva Galperin with the Electronic Frontier Foundation, which has called for Telegram to improve its privacy practices. On Feb. 27, however, he admitted from his Russian-language account that "Telegram channels are increasingly becoming a source of unverified information related to Ukrainian events."
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