EMMYLOU HAFFNER
EH
Signed articles
4 articles published in Tangente
History and CultureN°179Nov 22, 2017The best illusion of 2017!
The 2017 edition of the Best Illusion of the Year Contest, an annual international optical-illusion competition, took place in early October.
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History and CultureN°61Oct 06, 2016Dedekind and sets
One of the earliest champions of set theory was the German Dedekind, who famously corresponded with Cantor.
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History and CultureN°59Apr 25, 2016The number line: definitions versus intuition
In the 19th century, mathematicians sought rigorous definitions of the quantities that make up the continuum of the line. How did they rigorously characterize the real continuum?
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History and CultureN°169Mar 07, 2016Richard Dedekind: Numbers and concepts
Richard Dedekind died on February 12, 1916. This gives Tangente an opportunity to profile a German mathematician fascinated by numbers, whose legacy continues to shape mathematics today. The concepts he introduced lie at the heart of modern algebra.
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