20th July

Mathematicians who were born or died on 20th July

Mathematicians born on this day:

1789 : Bordoni
1855 : Pierre Puiseux
1876 : Blumenthal
1879 : Bilimovic
1929 : Kennedy

Mathematicians who died on this day:

1751 : Robins
1819 : Playfair
1866 : Riemann
1883 : Colenso
1911 : Schubert
1922 : Markov
1968 : Andrew Young
1985 : de Finetti

Posters available   (Click on a link below)

John Playfair Bernhard Riemann A A Markov

A quotation for today

Bernhard Riemann (1826 - 1866)

Therefore, either the reality on which our space is based must form a discrete manifold or else the reason for the metric relationships must be sought for, externally, in the binding forces acting on it.

Lecture on the foundation of geometry

Another quotation by one of today's mathematicians

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School of Mathematics and Statistics
University of St Andrews, Scotland