The professional activity archive of the mathematician Ferran Sunyer i Balaguer was ceded to the UAB Science and Technology Library by the Ferran Sunyer i Balaguer Foundation, after the signing of the agreement between the Foundation, who owns the documents, and the UAB . This part of the archive contains various documentation about his professional activity, such as works and mathematical notes. The description of the documents is based on the inventory done by Servei d’Arxius de Ciència.