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</html><description>Johann Albrecht Euler&#xA0;(27 November 1734 &#x2013; 17 September 1800) was a Swiss-Russian&#xA0;astronomer&#xA0;and&#xA0;mathematician. Above: This is the classic portrait of Johann Euler who is to be distinguished, even visually from his father Leonhard. Also known as&#xA0;Johann Albert Euler&#xA0;or&#xA0;John-Albert Euler, he was the first child born to the great Swiss mathematician&#xA0;Leonhard Euler&#xA0;(1707&#x2013;1783), who had emigrated [for the [&hellip;]</description><thumbnail_url>https://3.bp.blogspot.com/-fkcZaKZX6pE/WaRysJh4n1I/AAAAAAAAeVI/v-wGitAd6ZsE3URYMY_U0M5Kvmrsc2p8wCK4BGAYYCw/w1200-h630-p-k-no-nu/%25D1%258D%25D0%25B9%25D0%25BB%25D0%25B5%25D1%2580%2BJohann%2BAlbrecht%2BEuler.%2BOil%2Bpainting%2Bby%2BE.Handmann%252C%2B1756.jpg</thumbnail_url></oembed>
