I vividly remember first day of school after kindergarten in Spain. (3-4 years o... | Hacker News

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		mejutoco 3 days ago \| parent \| context \| favorite \| on: Lie groups are crucial to some of the most fundame... I vividly remember first day of school after kindergarten in Spain. (3-4 years old?) Sets and Venn diagrams, how interesting and intuitive. Unfortunately it was arithmetic from then on.

seanhunter 3 days ago [–]

Fun fact: Venn diagrams were invented by Euler[1]. In fact, John Venn called them "Eulerian Circles" in his papers.

[1] Like so much else in maths.

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