A collector issue
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200 issues of Tangente
Two hundred issues. Or rather, two hundred unmissable meetings for mathematics enthusiasts. Two hundred occasions to feast on geometric treats, arithmetic gems, algebraic goodies, artistic delights and other playful, probabilistic, logical and other amuse-bouches. Testimonials from notable figures will reveal the hidden alchemy that enabled Tangente magazine to grow, to spark vocations, to help teachers, to inspire enthusiasts of scientific culture, but also to make known and understand the mathematical mechanisms hidden in countless domains. History, art, culture, science, literature, entertainment and societal topics have been present since issue 1 and will continue as long as you stay with us!
The most beautiful mathematical puzzles
They have accompanied all lovers of beautiful mathematics, since the beginning: challenges, puzzles, problems. Arousing in turn astonishment, disbelief, fascination or bewilderment, they awaken our curiosity and ignite the spark of understanding.Puzzles have been part of human culture since antiquity, with the Greeks with Zeno, with the Arabs with Abu al-Wafa, in the Renaissance with Bachet de Méziriac. Great "conveyors" have passed on to us a thousand and one wonders, which inspired the founders of Tangente: Sam Loyd, Henry Dudeney, Martin Gardner? And some mathematical geniuses, Leonhard Euler and John Conway in the lead, have bequeathed us subjects of reflection and dazzling insights that have opened new fields of knowledge, still revisited today, extended, generalized - in short, that are far from becoming outdated!
Artistic supplement
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200, a number like no other!
It can be written as a numeral, 200, or in words, two hundred. Even so, at first glance, the number does not seem particularly interesting. Admittedly, it is not perfect, unlike the eponymous issue of Tangente, but, like Achilles, it is powerful... and therefore fascinating. Here is a brief survey of its arithmetic properties.
Friendship among numbers
In mathematics, being amicable is not the same as having friends...
Collective decision-making under mathematical scrutiny
Arrow's classic impossibility theorem has often been invoked in political theory to demonstrate the irrationality of democracy. But is this result truly relevant to political science? Let's also revisit some of the mathematical arguments used in the epistemic theory of democracy.
Another Goncourt for another mathematician
Mathematics scored twice in 2021, with two Goncourt Prizes.
Maurice Glaymann (1931–2021), a leading figure in mathematics education
Maurice Glaymann was an outstanding figure in French mathematics education.
Magic and curiosities at the 7th Math Night
For its seventh edition, Math Night will once again be held in Mareau-aux-Prés, a Loire Valley town near Orléans whose mayor, Bertrand Hauchecorne, is none other than the editor-in-chief of Tangente.
An Interview with Cédric Villani
A 2010 Fields medallist and member of the Académie des sciences, Cédric Villani has become a leading advocate for mathematical culture. In early 2017, following Emmanuel Macron's rise to power, he became an MP for Essonne. What impact has this eminent mathematician's entry into politics had?
Vote for the 2021 Tangente Prize
Every year, Tangente's online followers and regular readers are invited to vote for their favorite popular mathematics book.