MacTutor
Mathematicians Of The Day
25th September
On this day in 1988, Faà di Bruno was beatified by Pope John Paul II in St Peter's Square in Rome.
A (personally designed) stamp of one of today's mathematicians is at THIS LINK.
A (personally designed) stamp of one of today's mathematicians is at THIS LINK.
Click on Ⓟ for a poster.
Born:
- 1819: George Salmon Ⓟ
- 1857: Alexander Pell Ⓟ
- 1888: Stefan Mazurkiewicz Ⓟ
- 1893: Harald Cramér Ⓟ
- 1893: Alexander Ostrowski Ⓟ
- 1921: John Quill Taylor King Ⓟ
- 1931: Bryan Birch Ⓟ
Died:
- 1777: Johann Heinrich Lambert Ⓟ
- 1828: Barnabé Brisson Ⓟ
- 1851: Christoph Gudermann
- 1933: Paul Ehrenfest Ⓟ
- 1955: Franz Rellich Ⓟ
- 2021: Joachim Neubüser Ⓟ
Quotation of the day
From Johann Heinrich Lambert
I should almost therefore put forward the proposal that the third hypothesis (angle sum of a triangle less than two right angles) holds on the surface of an imaginary sphere.
