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Tangente
Mathematics of Betting
March 30, 2017

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The mathematics of betting

At all times and in all civilizations, gambling and the chance that governs it have fascinated! Since the 15th century, mathematicians have gradually attempted to tame chance and to put betting into equation. Despite their conclusions, men still seek to "force the hand of fate" by developing martingales to win against the uncertain future. Can these strategies be applied to the next presidential elections? Do you know everything about odds, bookmaker methods and totally counterintuitive probabilistic paradoxes?

Mathematics and sociology

Sociology is a relatively recent field, and yet its links with mathematics are already well established. Thus, statistics, data analysis, and decision theory are widely used tools. But in the era of social networks, modeling interactions between individuals has become essential. To do this, the need for cutting-edge mathematics has exploded: graph theory, linear algebra, and principal component analysis are entering the field of human and social sciences.

The remarkable identities

What makes these famous "identities" so remarkable? Why do some of them inherit this qualifier? Yet elegant and concise formulas are not in short supply in mathematics... But let us not begrudge our pleasure, and let us return to these relations.

All articles in this issue

Jean Brette: A life devoted to sharing mathematics
History and Culture

Jean Brette: A life devoted to sharing mathematics

Jean Brette worked for forty years at the Palais de la Découverte. His passing deprives mathematics of one of its finest popularizers.

André DeledicqMar 20, 2017
Mathematics of the body
Math for everyone

Mathematics of the body

Mathematics inspires choreographers. Two works to see right now.

ELISABETH BUSSERMar 23, 2017
Women mathematicians at NASA: a film worth watching!
History and Culture

Women mathematicians at NASA: a film worth watching!

They were employed almost as "human computers" at Langley, the American research center in Hampton, Virginia.

ELISABETH BUSSERMar 23, 2017
Magic square: a new record
Math for everyone

Magic square: a new record

Magic squares still fire the imagination… and keep their designers racking their brains (see Tangente 161).

ELISABETH BUSSERMar 23, 2017
Algebraic topology on the internet
Math for everyone

Algebraic topology on the internet

A different approach to mathematics, using algebraic topology, is available online.

ELISABETH BUSSERMar 23, 2017
Penrose designer
History and Culture

Penrose designer

Roger Penrose's non-periodic tilings are inspiring designers too!

ELISABETH BUSSERMar 23, 2017
The kimono, a geometer's art
History and Culture

The kimono, a geometer's art

"Kimono painter" is how Kunihiko Moriguchi (born in 1941) describes himself.

ELISABETH BUSSERMar 23, 2017
Bet on the presidential election!
Reading note

Bet on the presidential election!

To mark the French presidential election, which coincides with the special report Tangente is devoting to betting, we invite our readers to bet… on the candidates' scores! It's free, and thousands of euros in gift vouchers are up for grabs.

GILLES COHENMar 24, 2017
Bullseye at 1,000!
Math for everyone

Bullseye at 1,000!

The Affaire de Logique column, published every week in Le Monde by Élisabeth Busser and Gilles Cohen, has just passed the milestone of issue 1,000! To mark the occasion, a major competition, Dans le 1000 (Bullseye at 1,000), is being held over twenty-five weeks (covering problems 1001 to 1025), with prizes to be awarded in November 2017, during Tangente's 30th-anniversary celebrations.

GILLES COHENMar 24, 2017
The Espace de l'art concret
Math for everyone

The Espace de l'art concret

In Mouans-Sartoux, in the Alpes-Maritimes, a strange apple-green cubic building catches the traveller's eye. Dedicated to concrete art, it gives pride of place to geometric abstraction. In particular, works by François Morellet and Josef Albers can be found there.

Hervé LehningMar 31, 2017