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History and Culture
Cantor−Bernstein:
Georg Cantor left his mark on the history of mathematics through his study of infinite sets. The Cantor–Bernstein theorem shows how a few results that are obvious for finite sets generalize to infinite sets… provided one takes a serious look at the question.
Fabien AOUSTINDec 22, 2022
History and Culture
A century ago: equal access to the baccalauréat | Tangente
Exactly 100 years ago, girls' secondary schools were authorized to offer the same curriculum as boys' schools. Girls could now officially prepare for the baccalauréat there without having to take supplementary classes.
Anne BoyéFeb 10, 2025
History and Culture
A mathematical password: sin x in 1830 | Tangente
In their 1894 book on the slang of the École polytechnique, Albert Lévy and Gaston Pinet recount an anecdote illustrating the atmosphere that could prevail in Paris during the revolutions of 1830 and 1848.
BENOIT RITTAUDAug 25, 2024
History and Culture
Three unsolved problems in geometry | Tangente
Geometry abounds in problems that remain unsolved. Some date back to the Renaissance! In tribute to Richard Kenneth Guy (1916–2020), here are three, gleaned from his book Unsolved Problems in Geometry (with Hallard Croft and Kenneth John Falconer, Springer, 1991).
Jean-Jacques DupasDec 4, 2020