The Gallery
20th century
Alfred Horn
Arend Heyting
Leon Henkin
Robin Gandy
Roland Fraïssé
Alexander Esenin-Volpin
Samuel Eilenberg
Martin Davis
Tadeusz Czeżowski
Haskell Curry
William Craig
Newton da Costa
Paul Joseph Cohen
Leon Chwistek
Alonzo Church
Luitzen Egbertus Jan Brouwer
Jon Barwise
Yehoshua Bar-Hillel
Lennart Åqvist
Kazimierz Ajdukiewicz
Sergei Adian
Wilhelm Ackermann
