Pytheas N. Fogg is a collective of several authors including Valérie Berthé, Sébastien Ferenczi, Christian Mauduit, Anne Siegel and others - Review of J. P. Allouche of

Pytheas Fogg, N. (ed.); Berthé, Valérie (ed.); Ferenczi, Sébastien (ed.); Mauduit, Christian (ed.); Siegel, A. (ed.), Substitutions in dynamics, arithmetics and combinatorics, Lecture Notes in Mathematics. 1794. Berlin: Springer. xv, 402 p. EUR 57.95/net; sFr. 96.50; £ 40.50; $ 76.80 (2002). ZBL1014.11015.: "This collective book, published under the pseudonym N. Pytheas Fogg, based on courses given by the authors in several universities and during several summer schools".