Nicolas Oury

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Type Classes have met a large success in Haskell and Isabelle, as a solution for sharing notations by overloading and for specifying with abstract structures by quantification on contexts. However, both systems are limited by second-class implementations of these constructs, and these limitations are only overcomed by ad-hoc extensions to the respective(More)
Plotkin and Pretnar's handlers for algebraic effects occupy a sweet spot in the design space of abstractions for effectful computation. By separating effect signatures from their implementation, algebraic effects provide a high degree of modularity, allowing programmers to express effectful programs independently of the concrete interpretation of their(More)
This paper exhibits the power of programming with dependent types by dint of embedding three domain-specific languages: Cryptol, a language for cryptographic protocols; a small data description language; and relational algebra. Each example demonstrates particular design patterns inherent to dependently-typed programming. Documenting these techniques paves(More)
We present a simple stochastic rule-based approach to multilevel modelling for computational systems biology. Populations are modelled using multilevel multisets; these contain both species and agents, with the latter possibly containing further such multisets. Rules are pairs of such multisets, but now allowing variables to occur (as well as species and(More)
The recent success of languages like Agda and Coq demonstrates the potential of using dependent types for programming. These systems rely on many high level features like datatype definitions, pattern matching and implicit arguments to facilitate the use of the language. However, these features complicate the metatheoretical study and are a potential source(More)
This paper is concerned with the asymptotic properties of a restricted class of Petri nets equipped with stochastic mass action semantics. We establish a simple algebraic criterion for the existence of an equilibrium, that is to say an invariant probability that satisfies the detailed balance condition familiar from the thermodynamics of reaction networks.(More)