Rohan French will present "Modal independence in S5: The view from proof nets" in Old Quad G09 at 12:30 on 17 March.

\nAbstract: Building on work in Restall (2007) we give a graphical proof system for the propositional modal logic S5\, hopefully shedding further light on an interesting notion of independence which is at least implicit in all extant sequent calculus presentations of S5. \;\n\n(This is joint work with Shawn Standefer)\n ORGANIZER;CN=Shawn Standefer: METHOD:PUBLISH END:VEVENT END:VCALENDAR