Fabien Aoustin
140 articles published in Tangente
Math for everyoneN°61Oct 03, 2016Join the groups!
The concept of a group first emerged from efforts to solve equations in the 19th century and soon became indispensable, highlighting parallels between situations that at first seem quite different. Let's see why mathematicians are so group-minded.
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Math for everyoneN°172Sep 15, 2016What if it were false?
Is Pythagoras' theorem really true? The question may seem strange, but in fact it all depends on the setting in which we wish to apply this geometric result.
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History and CultureN°172Sep 15, 2016Pythagoras without words
How many students can prove the Pythagorean theorem? Yet there is certainly no shortage of proofs.
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Math for everyoneN°172Sep 13, 2016The multiplier: a tool for every citizen
Everyone encounters rates of change sooner or later. Handling them is often a source of error, although one simple, effective tool can solve many such problems: the multiplier.
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Games and ChallengesN°171Jul 07, 2016Beach games
Tired of swimming, sunbathing and sandcastles? Improvise strategy games and other challenges with shells and pebbles found on the beach!
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Math for everyoneN°170May 06, 2016The scant remainder of Euclidean division
When we divide a by n using Euclidean division, we obtain a remainder. This remainder can take only a limited range of values: there are just n of them. This new perspective can simplify many calculations and cast a whole host of problems in a different light!
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Math for everyoneN°59Apr 25, 2016The projective line: a fruitful new perspective
The line is the simplest geometric figure imaginable. The variety of situations encountered in geometry may seem more complicated, and yet… might there be a special perspective from which the plane could be understood as a line? That is precisely what projective geometry is about!
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Math for everyoneN°59Apr 25, 2016Miraculous collinearity theorems!
A ruler, a compass, a sharp pencil—and the adventure has already begun! It can come as quite a surprise when three points turn out to lie on the same line. Plane geometry abounds in wondrous collinearity theorems.
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