Foreword


Ferran Sunyer i Balaguer (Figueres, 1912 – Barcelona, 1967) was a self-taught mathematician who worked in Catalonia from the late 1930s until his death. He was born with severe congenital nervous system atrophy and needed a wheelchair to move around. Furthermore, his physical disability prevented him from carrying out basic tasks such as eating or writing by himself. He spent his life between Barcelona and the Mas Batlle family home in Vilajoan (Garrigàs, Alt Empordà).

His major mathematical contributions were in the classical theory of analytic functions of one complex variable and his most significant results dealt with holomorphic, meromorphic, and analytic functions defined by Dirichlet series. He also made an important incursion in the theory of functions of a real variable in a joint work with Ernest Corominas, in which they established very weak conditions for an infinitely differentiable function to be polynomial. His work was recognised by both Catalan and Spanish organisations—from which he received numerous awards—and by the international mathematical community.

On the occasion of the centenary of the mathematician’s birth, the Ferran Sunyer i Balaguer Foundation (http://ffsb.iec.cat) organises a series of activities to pay tribute to Ferran Sunyer’s mathematical activity, his moral values in overcoming adversity, and his work at the service of science and the international scientific community. The Foundation also pays tribute to his mother, Àngela Balaguer, and his cousins, Maria and Àngels Carbona, who took care of him.