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Famous figures

Portraits of famous mathematicians, historical and contemporary

Greenhouse gases: the paradoxes of transport
History and Culture

Greenhouse gases: the paradoxes of transport

Greenhouse gas emissions continue to rise. Quantifying the share attributable to road transport is no simple matter—and reducing it is harder still!

JEAN LOUIS LEGRANDJun 29, 2018
Save fuel: bet on tires! | Tangente
History and Culture

Save fuel: bet on tires! | Tangente

In an unusual turn of events, the Industry category of the 2018 European Inventor Award, presented by the European Patent Office, has gone to a French mathematician.

La rédaction de TangenteJun 29, 2018
The Leslie model
History and Culture

The Leslie model

Modeling changes in an animal population is a frequently studied topic in mathematics and biology. But how can we account for the fact that individuals produce different numbers of offspring depending on their age? The Leslie model addresses these questions.

Fabien AOUSTINJun 28, 2018
Blake and Mortimer: mathematics in the comics
History and Culture

Blake and Mortimer: mathematics in the comics

Scientists are rare among comic-book heroes. Mathematicians are rarer still! One of the most famous scientists among them is Professor Philip Mortimer, from the "Blake and Mortimer" series. Let's examine his relationship with the queen of the sciences.

Jean-Paul TrucMay 22, 2018
Mathematicians killed at the front: Gâteaux, Levi and others
History and Culture

Mathematicians killed at the front: Gâteaux, Levi and others

Mathematicians, too, paid a heavy price in the Great War, leaving the scientific world with irreparable losses.

BERTRAND HAUCHECORNEMay 17, 2018
The Great War and European mathematics
History and Culture

The Great War and European mathematics

The deadly conflict of the First World War shattered international academic cooperation. It also took a devastating human toll, killing many scientists who had seemed destined for brilliant careers. Finally, it profoundly altered the place of mathematics in France.

BERTRAND HAUCHECORNEMay 17, 2018
The Archimedean hairspring at the heart of watchmaking
History and Culture

The Archimedean hairspring at the heart of watchmaking

Once again, we turn to a "spiral"—not in a field or on a canvas, but… inside a watch.

ELISABETH BUSSERMay 17, 2018
Houria Lafrance honored for promoting mathematics
History and Culture

Houria Lafrance honored for promoting mathematics

A tireless mathematics popularizer has just been honored. Houria Lafrance, president of the association "Les maths en scène," has been appointed a Knight of the National Order of Merit.

GILLES COHENMay 17, 2018
Emmanuel Houdard: Walloon of the Year for mathematics
History and Culture

Emmanuel Houdard: Walloon of the Year for mathematics

The 2017 Walloon of the Year Award has just been presented to mathematics teacher Emmanuel Houdart, director of the Maison des maths in Quaregnon, Hainaut, Belgium, near the French border.

GILLES COHENMay 17, 2018
André-Louis Cholesky: soldier-scholar and algebraist
History and Culture

André-Louis Cholesky: soldier-scholar and algebraist

In numerical analysis, the Cholesky method is a celebrated example of a scientific discovery made in one field—military geodesy—that went on to find applications in an ever-growing number of others.

Alexandre MoattiMay 16, 2018
Statistical fluctuations: beware small samples
History and Culture

Statistical fluctuations: beware small samples

Extracting knowledge from a mass of homogeneous data is the province of statistics. Yet it is quite an art: the conclusions must be treated with care! Small fluctuations around the mean can invalidate an entire line of reasoning. Let us learn how to spot them.

PHILIPPE BOULANGERMar 19, 2018
A guided tour of the Panthéon of mathematics
History and Culture

A guided tour of the Panthéon of mathematics

Visiting Paris with your family or a school group, you may be looking for mathematically themed attractions. The Panthéon is unlikely to spring to mind… Yet this monument celebrating the nation's great figures is full of surprises! Follow the guide.

ROGER MANSUYMar 19, 2018
Villani–Torossian report: 21 measures for mathematics
History and Culture

Villani–Torossian report: 21 measures for mathematics

The press has covered it extensively: a report has just been submitted to the Minister of National Education, recommending 21 measures to improve mathematics teaching in France. We take a closer look.

GILLES COHENMar 19, 2018
Objects that embody knowledge
History and Culture

Objects that embody knowledge

A mathematical object is a concept arising from... mathematics. The objects featured in this saga are physical ones, of interest not only mathematically but also historically, educationally and aesthetically. They illustrate concepts and make them easier to understand.

Jean-Jacques DupasMar 19, 2018
Taking action against gender stereotypes
History and Culture

Taking action against gender stereotypes

We met Véronique Slovacek-Chauveau and Annick Boisseau, the vice-president and secretary, respectively, of Femmes et mathématiques, who kindly agreed to answer our questions.

BERTRAND HAUCHECORNEMar 18, 2018
Gender balance in mathematics: an urgent priority
History and Culture

Gender balance in mathematics: an urgent priority

Although progress has been made in recent years, women remain underrepresented among those who use mathematics, from high school through to highly skilled scientific jobs. What lies behind this imbalance?

BERTRAND HAUCHECORNEMar 18, 2018
The women shattering the glass ceiling
History and Culture

The women shattering the glass ceiling

Women are underrepresented in scientific careers and leadership positions. Yet some are at the helm of organizations across the mathematical world. We shine a spotlight on the women leading associations, learned societies, businesses and more.

Martine BRILLEAUDMar 16, 2018
Fibonacci in concrete art: mathematics and aesthetics
History and Culture

Fibonacci in concrete art: mathematics and aesthetics

The famous Fibonacci sequence begins 1, 1, 2… and each term is the sum of the previous two. It abounds in surprising properties. Has it finally yielded all its secrets? That remains a mystery, as some artists are now working with it and exploring it from every angle.

Hervé LehningJan 30, 2018
Heron in space
History and Culture

Heron in space

Heron's formula extends to quadrilaterals and tetrahedra, as well as to all polyhedra, yielding many applications that remain relevant today.

MICHEL CRITONJan 30, 2018
Cédric Villani at his best: lectures
History and Culture

Cédric Villani at his best: lectures

Despite an extremely busy schedule, our most mathematically minded MP still pursues a few mathematics outreach activities...

Hervé LehningJan 30, 2018