Amat(h)ateurs and amat(h)atrices
Before the 19th century, many of those who are now considered mathematicians did not derive their income from this activity, or even practiced another one, more lucrative. While the status of mathematician has progressively become officialized and institutionalized, the practice of the discipline still attracts many amateurs, men and women, who find pleasure in immersing themselves in certain unsolved problems, mainly in geometry and number theory. Come meet these non-professionals who find, or are still searching for, and, why not, join the community of amat(h)ateurs.
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Recognized amateurs
What is an amateur mathematician? Defining one is no easy task, especially since the concept has undoubtedly evolved over time. Nevertheless, we will look at a few examples, both past and present.

They found it
Here are a few amateur mathematicians whose names are associated with recent results.

The joy of mathematical discovery: amateur mathematicians | Tangente
Christian Boyer, Vincent Thill, Jean Moreau de Saint-Martin and Philippe Fondanaiche—all passionate amateur mathematicians—agreed to answer our questions about how their interest in mathematics began and the activities they have developed in their favorite areas.

A centenarian devoted to magic squares | Tangente
After a busy career in public works engineering, during which he held various positions in Alsace, René Descombes (born in 1924!) has pursued his interest in magic squares since retiring.

Mathematics unleashed: passion and research | Tangente
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.

GIMPS and Mersenne primes | Tangente
If you would like to put your computer to work for research, your name might one day be associated with the discovery of a new Mersenne prime…
