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We define sound and adequate denotational and operational semantics for the stochastic lambda calculus. These two semantic approaches build on previous work that used similar techniques to reason about higher-order probabilistic programs, but for the first time admit an adequacy theorem relating the operational and denotational views. This resolves the main issue left open in (Bacci et al. 2018).
The primary goal of this paper is to present a unified way to transform the syntax of a logic system into certain initial algebraic structure so that it can be studied algebraically. The algebraic structures which one may choose for this purpose are
We study the lambda-mu-calculus, extended with explicit substitution, and define a compositional output-based interpretation into a variant of the pi-calculus with pairing that preserves single-step explicit head reduction with respect to weak bisimi
We study polymorphic type assignment systems for untyped lambda-calculi with effects, based on Moggis monadic approach. Moving from the abstract definition of monads, we introduce a version of the call-by-value computational lambda-calculus based on
This is a set of lecture notes that developed out of courses on the lambda calculus that I taught at the University of Ottawa in 2001 and at Dalhousie University in 2007 and 2013. Topics covered in these notes include the untyped lambda calculus, the
We introduce a simple extension of the $lambda$-calculus with pairs---called the distributive $lambda$-calculus---obtained by adding a computational interpretation of the valid distributivity isomorphism $A Rightarrow (Bwedge C) equiv (ARightarrow