Geodesic
Winding numbers and Fourier series
Informatics and Automation, Modern problems of mathematics, Tome 273 (2011), pp. 207-211.

Voir la notice de l'article provenant de la source Math-Net.Ru

This is an expository paper on a topic of classical analysis arising from the BMO-theory of topological degree (Brezis–Nirenberg, 1995). We sketch the history of the subject and some of its recent developments. 
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Jean-Pierre Kahane. Winding numbers and Fourier series. Informatics and Automation, Modern problems of mathematics, Tome 273 (2011), pp. 207-211. http://geodesic.mathdoc.fr/item/TRSPY_2011_273_a7/

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