а) Пусть есть набор фигур полимино, каждая умещается в квадрат 10×10. Докажите, что если копиями этих фигурок можно замостить область, содержащую квадрат сколь угодно большого размера, то можно ими замостить и всю плоскость.
б) Существует набор фигур (уже не клеточных), каждая умещается в квадрат 10×10, копиями которых можно замостить область, содержащую квадрат сколь угодно большого размера, но нельзя замостить всю плоскость.
а) Пусть есть набор фигур полимино, каждая умещается в квадрат 10×10. Докажите, что если копиями этих фигурок можно замостить область, содержащую квадрат сколь угодно большого размера, то можно ими замостить и всю плоскость.
б) Существует набор фигур (уже не клеточных), каждая умещается в квадрат 10×10, копиями которых можно замостить область, содержащую квадрат сколь угодно большого размера, но нельзя замостить всю плоскость.
BY Непрерывное математическое образование
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Update March 8, 2022: EFF has clarified that Channels and Groups are not fully encrypted, end-to-end, updated our post to link to Telegram’s FAQ for Cloud and Secret chats, updated to clarify that auto-delete is available for group and channel admins, and added some additional links. "Your messages about the movement of the enemy through the official chatbot … bring new trophies every day," the government agency tweeted. At the start of 2018, the company attempted to launch an Initial Coin Offering (ICO) which would enable it to enable payments (and earn the cash that comes from doing so). The initial signals were promising, especially given Telegram’s user base is already fairly crypto-savvy. It raised an initial tranche of cash – worth more than a billion dollars – to help develop the coin before opening sales to the public. Unfortunately, third-party sales of coins bought in those initial fundraising rounds raised the ire of the SEC, which brought the hammer down on the whole operation. In 2020, officials ordered Telegram to pay a fine of $18.5 million and hand back much of the cash that it had raised. 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. These entities are reportedly operating nine Telegram channels with more than five million subscribers to whom they were making recommendations on selected listed scrips. Such recommendations induced the investors to deal in the said scrips, thereby creating artificial volume and price rise.
from sa
