Template:Selected anniversaries/April 21: Difference between revisions
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File:Mark Twain by Abdullah Frères, 1867.jpg|link=Mark Twain (nonfiction)|Writer, entrepreneur, publisher and lecturer [[Mark Twain (nonfiction)|Mark Twain]] dies (1910). | File:Mark Twain by Abdullah Frères, 1867.jpg|link=Mark Twain (nonfiction)|Writer, entrepreneur, publisher and lecturer [[Mark Twain (nonfiction)|Mark Twain]] dies (1910). | ||
File:Omar Khayyam.jpg|link=Omar Khayyam (nonfiction)|[[Omar Khayyam (nonfiction)|Omar Khayyam]] invents new class of [[Gnomon algorithm]] which antipates the work of [[Mark Twain (nonfiction)|Mark Twain]]. | |||
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Revision as of 13:43, 27 November 2016
Writer, entrepreneur, publisher and lecturer Mark Twain dies (1910).
Omar Khayyam invents new class of Gnomon algorithm which antipates the work of Mark Twain.