Семен Александров (старший редактор отдела Мир)
Definition 3 A universal cover of a topological space \(X\) is a covering space \(\tilde{X}\) of \(X\) that is simply connected, meaning that it has no nontrivial loops. The universal cover is unique up to homeomorphism and serves as a “universal” object in the category of covering spaces of \(X\).
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Source: Computational Materials Science, Volume 268
保持耐心或许是更简单的方法，姜文电影里那句「让子弹飞一会儿」，会是我们在算法操纵下，最清醒的一种特立独行。
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Александра Синицына (Ночной линейный редактор)
Between December and January, 37% of Gen Z subscribers said they had canceled one or more streaming services that month because of subscription fatigue and another 29% said they planned to do so soon, according to data from Civic Science, a consumer analytics platform. A whopping 87% of Gen Z respondents reported feeling some level of fatigue with the subscription economy.，更多细节参见新收录的资料