Sum and Product in Dynamic Epistemic Logic

This is a joint work with H. P. VAN DITMARSCH and R. VERBRUGGE. PDF Download: Sum and Product in Dynamic Epistemic Logic Abstract: The Sum-and-Product riddle was first published in the reference H. Freudenthal (1969, Nieuw Archief voor Wiskunde 3, 152) [6].We provide an overview on the history of the dissemination of this riddle through [...]