Mathematicians Of The Day

4th April

On this day in 1820 Farkas Bolyai wrote to his son János about Euclid's 5th postulate:-
Do not try the parallels in that way: I know that way all along. I have measured that bottomless night, and all the light and all the joy of my life went out there.

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Quotation of the day

From John Napier
Seeing there is nothing that is so troublesome to mathematical practice, nor that doth more molest and hinder calculators, than the multiplications, divisions, square and cubical extractions of great numbers ... I began therefore to consider in my mind by what certain and ready art I might remove those hindrances.
Mirifici logarithmorum canonis descriptio