Pekka Myrberg

Pekka Juhana Myrberg (30 December 1892, Viipuri – 8 November 1976, Helsinki) was a Finnish mathematician known for developing the concept of period-doubling bifurcation[1][2][3][4] in a paper published in the 1950s.

Myrberg received his PhD in 1916 at the University of Helsinki under Ernst Lindelöf with thesis Zur Theorie der Konvergenz der Poincaré´schen Reihen ('On the theory of the convergence of Poincaré's series').

In 1962 he retired as professor emeritus but continued publishing mathematical papers into the 1970s.

[7] His research revived interest in the results of Gaston Julia and Pierre Fatou published during the beginning of the 20th century.

In 1954 he was an invited speaker (Über die Integration der Poissonschen Gleichung auf Riemannschen Flächen) at the International Mathematical Congress in Amsterdam.