Martine Brilleaud
51 articles published in Tangente
NewsN°230Jul 03, 2026The SMF prizes
The Société mathématique de France awards its 2025 prizes to the exhibition “Ça résonne” by MMI Lyon and to the company L'île logique, along with the ResCo scheme for collaborative teaching.
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History and CultureN°230Jul 01, 2026Esperanto, the universal language
Esperanto, created by Zamenhof in 1887, shares mathematics’ ideal of perfect coherence. Discover why this constructed language fascinates logicians and mathematicians.
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NewsApr 23, 2026Mathematically identical but fundamentally different doughnuts
Two tori plainly impossible to tell apart locally yet topologically distinct: a discovery that breaks a rule geometry has accepted for 150 years.
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Maths and artN°229Apr 22, 2026An equation engraver's imprint
Patrice Jeener (1944–2026) passed away on March 3 in his village of La Motte-Chalancon, in the Drôme.
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InterviewN°228Feb 14, 2026Cédric Aubouy, the man who did not know
Cédric Aubouy, a mathematical clown and founder of the L’île logique company, agreed to meet us to mark the publication of his first novel, Je ne sais pas ou la disparition des mathématiciens.
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N°228Feb 14, 2026Updated Littéramath lists
Littéramath is an association dedicated to promoting mathematical literature in all its forms.
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Math for everyoneN°225Aug 18, 2025An animal with a knack for flexing
Les flexagones du Kangourou is a leaflet printed on thick paper, featuring a mathematical structure to cut out.
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History and CultureN°222Feb 10, 2025Mathematics unleashed
As an amateur, where can you find topics to explore? How can you learn about a subject and keep abreast of the state of the art? Where can you meet people to exchange ideas with—or even find opportunities to publish? Here are a few pointers for anyone eager to take the plunge.
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History and CultureN°222Feb 10, 2025A marvel of pedagogy
Clairaut's Élemens d'algèbre (Elements of Algebra) was long a standard reference for teaching algebra.
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KnowledgeN°220Oct 17, 2024The world of functions
Many problems are tackled in function spaces, particularly those involving approximation.
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Math for everyoneN°220Oct 17, 2024Working environments for mathematicians
The abstract notion of space in mathematics is very different from what intuition suggests. Depending on the type of structure available, we can work with concepts from algebra, analysis, or geometry.
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Math for everyoneN°220Oct 15, 2024Rediscovering proportionality
Proportionality often brings to mind the rule of three—in other words, a method of calculation. Yet the concept first emerged in geometry, through the study of similar figures, a cornerstone of many theorems that gave rise to the idea of incommensurable quantities.
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