На Украине объяснили рост влияния одного политика фразой «как ребенок»14:46
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;
，这一点在谷歌浏览器【最新下载地址】中也有详细论述
第二十四条 对依照本法第十二条规定不予处罚或者依照本法第二十三条规定不执行行政拘留处罚的未成年人，公安机关依照《中华人民共和国预防未成年人犯罪法》的规定采取相应矫治教育等措施。
28 февраля США и Израиль начали военную операцию против Ирана. Ее целью стали объекты командования Корпуса стражей исламской революции, аэродромы, пункты запуска беспилотников и средства противовоздушной обороны.
农业农村现代化关系中国式现代化全局和成色。五年来，一直是总书记心中惦记的大事。