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Tangente

Mathematical Themes

Explore the major mathematical themes: geometry, algebra, analysis, arithmetic, logic, and many other fascinating fields.

Rollers: when a triangle rolls | Tangente
Math for everyone

Rollers: when a triangle rolls | Tangente

The circle always seems to be the ideal shape for moving an object on rollers. Yet this is not so: a kind of equilateral triangle with rounded sides proves better suited to certain everyday situations.

ALAIN ZALMANSKISep 23, 2019
Invaluable statistical software

Invaluable statistical software

Bayesian statistics has become an essential technique for establishing a chronology of archaeological events.

Marie-Anne VibetSep 23, 2019
Statistical software for archaeology | Tangente
Math for everyone

Statistical software for archaeology | Tangente

Bayesian statistics has become an essential technique for constructing chronologies of archaeological events.

Marie-Anne VibetSep 23, 2019
Jean-Claude Gardin: a free-thinking archaeologist | Tangente
History and Culture

Jean-Claude Gardin: a free-thinking archaeologist | Tangente

Few works offer as critical an overview of the state of a discipline as Archéologie théorique, written by Jean-Claude Gardin and published by Hachette in 1979.

Marie-Anne VibetSep 23, 2019
Jean-Claude Gardin, a free-thinking archaeologist
Reading note

Jean-Claude Gardin, a free-thinking archaeologist

Few books offer as critical an overview of the state of a discipline as Jean-Claude Gardin's Archéologie théorique, published by Hachette in 1979.

Marie-Anne VibetSep 23, 2019
Jean-Paul Benzécri, the father of correspondence analysis
Famous figures

Jean-Paul Benzécri, the father of correspondence analysis

Initially a mathematician, Jean-Paul Benzécri (born in 1932) turned to multivariate statistics.

Marie-Anne VibetSep 23, 2019
Jean-Paul Benzécri, father of correspondence analysis | Tangente
History and Culture

Jean-Paul Benzécri, father of correspondence analysis | Tangente

Jean-Paul Benzécri (born in 1932) began as a mathematician before turning to multivariate statistics.

Marie-Anne VibetSep 23, 2019
Dendrochronology: dating by tree rings | Tangente
Math for everyone

Dendrochronology: dating by tree rings | Tangente

How was a harbour built in Roman times? When was this violin made? When was a mine's infrastructure built? Dendrochronologists seek to answer all these questions by precisely dating objects, structures or remains containing wood.

MIREILLE SCHUMACHERSep 20, 2019
Dendrochronology
Interview

Dendrochronology

How was a harbor built in Roman times? When was this violin made? When was a mine's infrastructure built? Dendrochronologists seek to answer all these questions by precisely dating objects, structures, or remains containing wood.

MIREILLE SCHUMACHERSep 20, 2019
Beneath the paving stones… maths

Beneath the paving stones… maths

Counting, measuring and building: these were the mathematical aims of the ancients. To achieve them, they created instruments that archaeologists have since unearthed.

ELISABETH BUSSERSep 19, 2019
Beneath the paving stones… mathematics – Ancient mathematical instruments | Tangente
History and Culture

Beneath the paving stones… mathematics – Ancient mathematical instruments | Tangente

Counting, measuring and building: these were the mathematical aims of the Ancients. To achieve them, they created instruments that archaeologists have since unearthed.

ELISABETH BUSSERSep 19, 2019
Archaeological chronology: statistical methods | Tangente
Math for everyone

Archaeological chronology: statistical methods | Tangente

To establish a chronology, archaeologists draw on a variety of statistical models, including correspondence analysis. Monte Carlo numerical methods are also brought into play. Mathematics is becoming indispensable to archaeology!

LUCIE MARTINIESep 19, 2019
Chronology
Knowledge

Chronology

To establish a chronology, archaeologists draw on a range of statistical models, including correspondence analysis. Monte Carlo numerical methods also come into play. Mathematics is becoming indispensable to archaeology!

LUCIE MARTINIESep 19, 2019
Bayesian statistics applied to dating

Bayesian statistics applied to dating

When we think of the tools archaeologists use to date objects or events, radiocarbon dating and dendrochronology immediately spring to mind. Mathematical techniques based on probability are also used.

Anne PhilippeSep 19, 2019
Bayesian statistics applied to dating
Math for everyone

Bayesian statistics applied to dating

When we think of the tools archaeologists use to date objects or events, radiocarbon dating and dendrochronology immediately spring to mind. Mathematical techniques based on probability are also used.

Anne PhilippeSep 19, 2019
The dyadic tree
Knowledge

The dyadic tree

An infinite tree can be used to construct either the positive integers or the dyadic integers. The trick is to choose carefully where to put the 0s and 1s.

BENOIT RITTAUDSep 19, 2019
Dyadic tree: integers and p-adic order | Tangente
Math for everyone

Dyadic tree: integers and p-adic order | Tangente

Starting from a tree whose leaves extend indefinitely, we can construct either the positive integers or the dyadic integers. The trick? Put the 0s and 1s in the right places.

BENOIT RITTAUDSep 19, 2019
Waves of settlement
Famous figures

Waves of settlement

Mathematical models developed by mathematician Albert Ammerman and geneticist Luca Cavalli-Sforza, combining human genetics and archaeology, have challenged prevailing views of population expansion and the myth of great invasions.

Hervé Le BrasSep 18, 2019
Settlement waves: A mathematical model | Tangente
Math for everyone

Settlement waves: A mathematical model | Tangente

Mathematical models developed by mathematician Albert Ammerman and geneticist Luca Cavalli-Sforza, combining human genetics and archaeology, have challenged prevailing accounts of population expansion and the myth of large-scale invasions.

Hervé Le BrasSep 18, 2019
A dive into a strange world of numbers
Math for everyone

A dive into a strange world of numbers

At the beginning of the 20th century, the German mathematician Kurt Hensel "invented" new numbers, written with infinitely many digits as in the decimal system, but based on a very different notion of proximity. This curious theory has proved highly fruitful in arithmetic!

BERTRAND HAUCHECORNESep 18, 2019