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1 天前 · Stephen William Hawking, CH , CBE , FRS , FRSA (8 January 1942 – 14 March 2018) was an English theoretical physicist, cosmologist, and author who was director of research at the Centre for Theoretical Cosmology at the University of Cambridge. [6] [17] [18] Between 1979 and 2009, he was the Lucasian Professor of Mathematics at Cambridge ...
1 天前 · Probability theory. In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is. The parameter is the mean or expectation of the distribution (and also its median and mode ), while ...
1 天前 · The App Store is an app marketplace developed and maintained by Apple, for mobile apps on its iOS and iPadOS operating systems. The store allows users to browse and download approved apps developed within Apple's iOS SDK.
20 小時前 · Four UN members (Cuba, Liechtenstein, Monaco and North Korea) do not belong to the IMF hence their economies are not ranked below. Kosovo, despite not being a member of the United Nations, is a member of IMF. Taiwan is not a IMF member but it is still listed in the official IMF indices. Several leading GDP-per-capita (nominal) jurisdictions may ...
3 天前 · An Android phone, showing that it is connected to a 5G network. In telecommunications, 5G is the fifth-generation technology standard for cellular networks, which cellular phone companies began deploying worldwide in 2019, and is the successor to 4G technology that provides connectivity to most current mobile phones.
1 天前 · The cat ( Felis catus ), commonly referred to as the domestic cat or house cat, is a small domesticated carnivorous mammal. It is the only domesticated species of the family Felidae. Recent advances in archaeology and genetics have shown that the domestication of the cat occurred in the Near East around 7500 BC.
2 天前 · English is a West Germanic language in the Indo-European language family, whose speakers, called Anglophones, originated in early medieval England.[4][5][6] The namesake of the language is the Angles, one of the ancient Germanic peoples that migrated to the island of Great Britain. English is the most spoken language in the world, primarily ...
