Robert Ammann
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List of amateur mathematicians
Pseudomathematics
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Aubrey de Grey
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Kurt Heegner
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Jean-Robert Argand
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On-Line Encyclopedia of Integer Sequences
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Gaston Tarry
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Nathaniel Bowditch
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Lists of mathematicians
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Charles Wheatstone
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Fundamental theorem of algebra
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Srinivasa Ramanujan
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Recreational mathematics
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Amateur
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