В Венгрии обвинили Украину в попытках добиться энергетической блокады14:56
Often people write these metrics as \(ds^2 = \sum_{i,j} g_{ij}\,dx^i\,dx^j\), where each \(dx^i\) is a covector (1-form), i.e. an element of the dual space \(T_p^*M\). For finite dimensional vectorspaces there is a canonical isomorphism between them and their dual: given the coordinate basis \(\bigl\{\frac{\partial}{\partial x^1},\dots,\frac{\partial}{\partial x^n}\bigr\}\) of \(T_pM\), there is a unique dual basis \(\{dx^1,\dots,dx^n\}\) of \(T_p^*M\) defined by \[dx^i\!\left(\frac{\partial}{\partial x^j}\right) = \delta^i{}_j.\] This extends to isomorphisms \(T_pM \to T_p^*M\). Under this identification, the bilinear form \(g_p\) on \(T_pM \times T_pM\) is represented by the symmetric tensor \(\sum_{i,j} g_{ij}\,dx^i \otimes dx^j\) acting on pairs of tangent vectors via \[\left(\sum_{i,j} g_{ij}\,dx^i\otimes dx^j\right)\!\!\left(\frac{\partial}{\partial x^k},\frac{\partial}{\partial x^l}\right) = g_{kl},\] which recovers exactly the inner products \(g_p\!\left(\frac{\partial}{\partial x^k},\frac{\partial}{\partial x^l}\right)\) from before. So both descriptions carry identical information;
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众所周知，海湾地区是“文明世界的十字路口”，自古以来连通着欧亚非三大洲。然而，它距离全球最重要的需求发源地，都有一定的距离：与西欧差了几千公里，与东亚差的更远，与美国更是差太远了。对于那些追求低延迟的任务来说，海湾地区其实不太合适：理想状态下，从阿联酋到伦敦的来回通信延迟(RTT)约为120ms, 到香港超过150毫秒，到东京更是可达200毫秒。能不能接受这样的延迟，取决于任务性质，一般的AI推理还是可以的。至于AI训练，就更可以了，因为训练对通信延迟的敏感性极低，而且完全可以本地训练。。业内人士推荐超级权重作为进阶阅读