11:09, 11 марта 2026Россия
Пожар в посольстве США после атаки попал на видео20:45
，更多细节参见有道翻译
If \(X\) is path-connected, the isomorphism type of \(\pi_1(X,x_0)\) is independent of the basepoint \(x_0\), and we write simply \(\pi_1(X)\).
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