Definition 1 A covering space of a topological space \(X\) is a topological space \(C\) together with a continuous surjective map \(p: C \to X\) such that for every point \(x \in X\), there exists an open neighborhood \(U\) of \(x\) such that \(p^{-1}(U) \cong F \times U\) for some discrete set \(F\) (called the fiber over \(x\)), and the map \(p\) restricted to each component of \(p^{-1}(U)\) is a homeomorphism onto \(U\).
Десять БПЛА удалось сбить над Белгородской областью, четыре — над акваторией Азовского море, три в Курской области. По два дрона перехвачено над Краснодарским краем, Крымом и Московским регионом. Один БПЛА сбит над Орловской областью.
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This downloads the package from a JS CDN and adds it to your vendor directory and updates your config/importmap.rb. The package then gets automatically included in your application with the javascript_importmap_tags ERB tag included in the of the default HTML templates. You can see how this gets expanded if you look at the source of any generated page in your browser: