
Maths and games
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Maths and games
Games and mathematics are intimately linked. By solving problems or imagining theories, are we not playing? Conversely, the various strategies developed by a player and the algorithms for solving situations in board games gave rise to a field of mathematics, game theory. We then understand why games can... "play" a role in school and make education fun. What if every math problem took the form of a game? Puzzles and other recreational pastimes have long been popular with readers, in the press as well as in publishing. Eminent mathematicians have even posed challenges at the boundary between pure play and mathematical problems. Doing math through play means reconciling the useful and the pleasant, it means improving life in society. It is not surprising that the theme of Maths Week 2019 is "Playing together with mathematics".
Léonard de Vinci
Exactly five hundred years after his death, Léonard de Vinci still fascinates. For the French, it is through the Mona Lisa at the Louvre, and the spectacular inventions presented at the Clos Lucé castle in Amboise. Artist, engineer, scientist, this brilliant Italian scholar crossed the Alps to end his days in the Loire Valley. His close connection with Luca Pacioli, a mathematician who founded accounting, led Léonard toward a mathematical approach. His drawings of polyhedra transform geometric figures into works of art. In a world emerging from the Middle Ages, well before René Descartes, his mastery both theoretical and practical of perspective led him to understand, through the close connection that exists between painting and mathematics, the importance of the scientific approach.
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The mind-bending properties of infinity
Infinity abounds in paradoxes of every kind. For example, the terms of certain numerical series can be rearranged so that they converge… to any number chosen in advance! Skeptical? Follow Bernhard Riemann's reasoning…

The planispheric astrolabe
The astrolabe is the scientific instrument par excellence! The king of measuring instruments, it ruled supreme for more than a thousand years. It has since lost its former glory, and few people still use it or handle it with nostalgia. Yet it offers a wonderful opportunity to put mathematics into practice.

Astro: street art, trompe-l'oeil and optical illusions
A painter and visual artist, Astro favors random structures and elementary geometric forms in both his paintings and his murals. Trompe-l'oeil, anamorphoses and other optical illusions also interest this self-taught artist.

Fields medalist Jean Bourgain dies at 64
Belgian mathematician Jean Bourgain died on Saturday, December 22, 2018, following a long illness.

Three exceptional mathematicians we have lost
The days following Christmas 2018 were particularly cruel for the mathematical community. In addition to Jean Bourgain, we learned of the deaths of Elias Menachem Stein (193–12018), Sir Peter Swinnerton-Dyer (1927–2018) and Sir Michael Francis Atiyah (1929–2019).

The Math-o-LU workshops launch in 2019
The Maison des mathématiques de l'Ouest, which brings together mathematics outreach initiatives across Pays de la Loire, and the Résonnance association, which runs dance and theater workshops linked to science, spearheaded a project to establish a mathematics club at Le Lieu Unique, a performing arts venue in Nantes (Loire-Atlantique).

Let’s play with 2019
We thought 2019 was an unremarkable number. Not at all! As it does every year, the Tangente team has surpassed itself in uncovering its finer qualities.

Writing for Tangente in 2019
What if you, too, wrote for Tangente? To that end, the Club Tangente is getting an early start on its 2019 Best Article Prize (PMA), organized in partnership with the CultureMath website and the APMEP.

The astrolabe: all the answers
After reading the article on the planispheric astrolabe, practise using it by answering these questions






