Abstract:
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.
Citation:
Jean-Pierre Kahane, “Winding numbers and Fourier series”, Modern problems of mathematics, Collected papers. In honor of the 75th anniversary of the Institute, Trudy Mat. Inst. Steklova, 273, MAIK Nauka/Interperiodica, Moscow, 2011, 207–211; Proc. Steklov Inst. Math., 273 (2011), 191–195