Екатерина Грищенко (старший редактор отдела «Бывший СССР»)
Definition 2 A homeomorphism between topological spaces \(X\) and \(Y\) is a bijective map \(f: X \to Y\) such that both \(f\) and its inverse \(f^{-1}: Y \to X\) are continuous. Explicitly:
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Classic arcade CRTs are quite different from modern VGA monitors. Standard VGA runs at 31.5kHz horizontal sync, meaning it draws 31,500 lines per second. Arcade monitors run at 15.7kHz, roughly half that rate. So unfortunately you can’t just plug a VGA cable into an arcade monitor: the monitor’s horizontal deflection circuitry physically cannot sweep the electron beam fast enough.
Amateur conservationist and social media influencer Theerasak 'Pop' Saksritawee has a rare bond with Thailand’s critically endangered dugongs. With dugong fatalities increasing, Pop works alongside scientists at Phuket Marine Biological Centre to track the mammals with his drone and restore their disappearing seagrass habitat. Translating complex science for thousands online, Pop raises an urgent alarm about climate change, pollution and habitat loss — before Thailand’s dugongs vanish forever