Introduces the first intersection type system for a lambda calculus with algebraic effects and handlers that characterizes termination via subject reduction and expansion while inducing a sound simple type system with decidable HOMC.
Ben Laurie, Adam Langley, and Emilia K¨ asper
3 Pith papers cite this work. Polarity classification is still indexing.
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2026 3representative citing papers
Programs emit intents checked against policies by a governed runtime before effects occur, with formal specification, Rocq verification of 454 theorems, and BEAM implementation.
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When Types Intersect and Effects Get Handled
Introduces the first intersection type system for a lambda calculus with algebraic effects and handlers that characterizes termination via subject reduction and expansion while inducing a sound simple type system with decidable HOMC.