Europe does not suffer from a shortage of capital. What it lacks is the legal courage and analytical competence required to direct that capital toward the areas where it can create the greatest long-term value: SciTech startups. This gap shapes the entire continent’s innovation landscape, and Sweden is no exception. Even as Sweden is celebrated […]
«Я не верю Зеленскому. Даже в то, что у него нос между глазами». В Европе пошли на противостояние с Зеленским из-за «Дружбы»08:50
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UniScientist 的关键洞察源于一个被广泛忽视的不对称性。
A filled torus (a doughnut) is a 3-manifold homeomorphic to \(S^1 \times D^2\), where \(D^2\) is the 2-dimensional disk. There exists a deformation retract from the doughnut to a circle, so the fundamental group of the doughnut is \(\pi_1(S^1 \times D^2) \cong \mathbb{Z}\).
A few months ago, for instance, I watched my mother-in-law (who was born and raised in a village in northern Iran) teach Nava how to knock on wood for good luck. I hadn’t realized this was so widespread a practice until I checked Wikipedia and found that variants exist in Bulgaria (chukam na dǎrvo), Georgia (kheze daḳaḳuneba), Indonesia (amit-amit jabang bayi), Norway (bank i bordet ) and some two dozen other countries.