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Ugo Dal Lago

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  • POPL5 editions2021–2026
  • PLanQC2 editions2024–2025

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titleconferencedate
On Circuit Description Languages, Indexed Monads, and Resource AnalysisPOPL 20262026-01-11
Presents a monad-based denotational semantics for Proto-Quipper variants that cleanly separates returned values from the circuits a term generates, using a…
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On Higher-Order Model Checking of Effectful Answer-Type-Polymorphic ProgramsOOPSLA 20252025-10-16
Claims decidability for a nontrivial fragment of effectful higher-order programs by introducing polymorphic answer-type □ and a type system that allows…
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Towards Quantum Multiparty Session TypesPLanQC 20252025-01-25
Proposes Quantum MPSTs that extend multiparty session types with linearity and quantum primitives, implements an operational semantics as a labeled transition…
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Flexible Type-Based Resource Estimation in Quantum Circuit Description LanguagesPOPL 20252025-01-19
Introduces a type-and-effect system for Quipper that produces parametric upper bounds on circuit size (width, gate count, and wire-level depth) by combining…
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Circuit Width Estimation via Effect Typing and Linear Dependency (Extended Abs...PLanQC 20242024-01-20
Proto-Quipper-R implements a linear dependent type-and-effect system that produces parametric upper bounds on circuit width (indices are arithmetic expressions…
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On Interaction, Efficiency, and ReversibilityGALOP 20242024-01-14
Claim: the Interaction Abstract Machine (IAM) fails the usual invariance thesis — it is not invariant for time or space under natural encodings of Turing…
Talk
On Model-Checking Higher-Order Effectful ProgramsPOPL 20242024-01-14
Paper shows higher-order effectful programs map to ordinary higher-order recursion schemes via a CPS transformation and recovers classic model-checking…
Talk
Multi Types and Reasonable SpaceICFP 20222022-09-11
Claims a concrete machine, Space KAM, is a reasonable space cost model for the lambda calculus (linear overhead vs. Turing/RAM) and handles logarithmic-space…
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On Feller Continuity and Full AbstractionICFP 20222022-09-11
Shows that in a call-by-value higher-order lambda calculus with sampling and only continuous real-valued primitives, Feller-continuity on the induced labelled…
Talk
Effectful Program DistancingPOPL 20222022-01-16
Proposes a semantic framework that extends differential logical relations to effectful higher-order languages and proves a fundamental lemma that yields…
Talk
A Relational Theory of Effects and CoeffectsPOPL 20222022-01-16
Paper gives an operational, relational framework for higher-order languages with graded modal types and algebraic effects, using a monadic semantics (Maybe…
Talk
Intersection Types and (Positive) Almost-Sure TerminationPOPL 20212021-01-17
Intersection types exactly characterize two probabilistic termination notions: the probability of convergence equals the least upper bound of norms of certain…
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The (In)Efficiency of InteractionPOPL 20212021-01-17
Compares four token-based abstract machines and proves precise time gaps: YAM (geometry of interaction) can be exponentially slower than Curien’s environment…
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