## Mathematics

This section contains my mathematical articles and notes, and a few from other mathematicians.

In 2003 I added the classical paper *Numbers of solutions of equations in finite fields* of *André WEIL* (with permission of the *American Mathematical Society*) that had at that time been unavailable.

In 2005 I worked with *Jean GIRAUD* to transcribe his class notes on *Riemann Surfaces* into TeX. In 2007 I transcribed the course of *Jean-Louis VERDIER* on the *fundamental group* into TeX.

In 2010 I republished the course on *plane curves of second order and their invariants* by *Ernst FREUDENTHAL* and *Werner HEINRICH*, supplemented in 2011 by the solutions booklet to their exercises. Also in 2011 I added the Bourbaki talk of *Enrico BOMBIERI* on *Counting points on curves over finite fields*.

In 2014 appeared my reedition of the SGA d’Orsay, « en hommage à *Michel DEMAZURE, Jean GIRAUD, Michel RAYNAUD et Jean-Louis VERDIER* » Séminaire de Géométrie Algébrique.

This section is organized into these subareas:

- mathematical recreation
- astronomy & physics
- algebra
- topology
- differential geometry
- algebraic geometry
- arithmetic
- representations

#### Timelines of mathematicians (and some physicists and astronomers)

The standard reference on the Web for biographies of mathematicians is the Mac Tutor History of Mathematics Archive.

Latest additions to the timelines are marked red, changes to the previous version are marked blue.

- version v2.13, 2018-01-01 : selection of timelines since 1460 (currently 543)

in v2.13 update to 2018, added Nikolaus Kopernikus and Tycho Brahe

in v2.12 birthday of Jacques Dixmier according to MacTutor is 1924-01-01

in v2.11 added Blaschke, Sperner, Collatz, Yang, Berger, Mills, Haken, Appel, Kazdan, Weinstein, ‘t Hooft