- male, 95 years old
- Martin Gardner (b. October 21, 1914, Tulsa, Oklahoma) is a popular American mathematics and science writer specializing in recreational...
- male, deceased (1930)
- Henry Ernest Dudeney (10 April 1857 - 24 April 1930) was an English author and mathematician who specialised in logic puzzles and mathematical...
- male
- Zoltán Pál Dienes (Anglicized as 'Zoltan Paul Dienes' is a Hungarian mathematician whose ideas on the education, especially of small children, ha...
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