target defaults to current-year ES version:
Стало известно о самом крупном налете дронов ВСУ на Москву с начала годаСистемы ПВО менее чем за 12 часов уничтожили 65 БПЛА на подлетах к Москве
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这一次，人们的焦虑从体力替代转向脑力替代。，推荐阅读谷歌获取更多信息
中國人形機器人之夢：當熱度退潮，留下的是泡沫還是繁榮？
Definition 4 (Definition: Fundamental Group) Let \(X\) be a topological space and \(x_0 \in X\) a basepoint. A loop based at \(x_0\) is a continuous map \(\gamma: [0,1] \to X\) with \(\gamma(0) = \gamma(1) = x_0\). Two loops \(\gamma, \delta\) are homotopic relative to \(x_0\) (written \(\gamma \simeq \delta\)) if there exists a continuous map \(H: [0,1] \times [0,1] \to X\) such that \[H(s,0) = \gamma(s), \quad H(s,1) = \delta(s), \quad H(0,t) = H(1,t) = x_0\] for all \(s,t \in [0,1]\). This is an equivalence relation; denote the equivalence class of \(\gamma\) by \([\gamma]\).