Abstract
This quarter's Semantics column is devoted to a survey of BI-Logic - the logic of bunched implications - by David Pym. BI-Logics have a broad range of applications, including program verification. In particular they underpin Separation Logic which has attracted considerable attention both in the theory community and in industry. Notably, Steve Brookes and Peter O'Hearn were awarded the 2016 Gödel Prize for their work developing Concurrent Separation logic (CSL) (an accomplishment we were pleased to acknowledge in this series [Brookes and O'Hearn 2016]), and CSL has been successfully deployed at Facebook, and elsewhere. In fact, it was Peter who proposed that I invite David to write a column on BI-Logics, a suggestion I am happy to acknowledge.
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