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Disjoint Semirings for Fractional Permissions

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If you have a question about this talk, please contact Dominic Mulligan .

**NOTE NON-STANDARD DAY AND ROOM BOOKING**

Fractional permissions are frequently used in concurrent verification to track shared ownership of resources. Most recent uses of fractional permissions assumes only an additive structure for shares (e.g. as separation algebras). We show the benefits of using a multiplicative structure (i.e. a kind of semiring) and discuss the logical and computational consequences of this choice.

This talk is part of the Logic and Semantics Seminar (Computer Laboratory) series.

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