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A structural theorem for Kleene algebras is proved, showing that an element of a Kleene algebra can be looked upon as an ordered pair of sets. Further, we show that negation with the Kleene property (called the `Kleene negation') always…

Logic · Mathematics 2020-07-24 Arun Kumar , Mohua Banerjee

Building on \'Esik and Kuich's completeness result for finitely weighted Kleene algebra, we establish relational and language completeness results for finitely weighted Kleene algebra with tests. Similarly as \'Esik and Kuich, we assume…

Logic in Computer Science · Computer Science 2024-07-11 Igor Sedlár

A notion of generalized regular expressions for a large class of systems modeled as coalgebras, and an analogue of Kleene's theorem and Kleene algebra, were recently proposed by a subset of the authors of this paper. Examples of the systems…

Logic in Computer Science · Computer Science 2013-03-12 Marcello Bonsangue , Georgiana Caltais , Eugen-Ioan Goriac , Dorel Lucanu , Jan Rutten , Alexandra Silva

The celebrated Kleene fixed point theorem is crucial in the mathematical modelling of recursive specifications in Denotational Semantics. In this paper we discuss whether the hypothesis of the aforementioned result can be weakened. An…

Information Theory · Computer Science 2024-01-25 Asier Estevan , Juan-José Minãna , Oscar Valero

We investigate the algebraic reasoning of quantum programs inspired by the success of classical program analysis based on Kleene algebra. One prominent example of such is the famous Kleene Algebra with Tests (KAT), which has furnished both…

Programming Languages · Computer Science 2022-03-30 Yuxiang Peng , Mingsheng Ying , Xiaodi Wu

A constructive proof of the Goedel-Rosser incompleteness theorem has been completed using the Coq proof assistant. Some theory of classical first-order logic over an arbitrary language is formalized. A development of primitive recursive…

Logic in Computer Science · Computer Science 2008-05-19 Russell O'Connor

We provide an extension of concurrent Kleene algebras to account for probabilistic properties. The algebra yields a unified framework containing nondeterminism, concurrency and probability and is sound with respect to the set of…

Logic in Computer Science · Computer Science 2013-06-13 Annabelle McIver , Tahiry Rabehaja , Georg Struth

In mathematics, it is common practice to have several constructions for the same objects. Mathematicians will identify them modulo isomorphism and will not worry later on which construction they use, as theorems proved for one construction…

Logic in Computer Science · Computer Science 2015-07-10 Théo Zimmermann , Hugo Herbelin

Kleene algebra with tests, KAT, provides a simple two-sorted algebraic framework for verifying properties of propositional while programs. Kleene algebra with domain, KAD, is a one-sorted alternative to KAT. The equational theory of KAT…

Logic in Computer Science · Computer Science 2022-05-09 Igor Sedlár , Johann J. Wannenburg

We study various formulations of the completeness of first-order logic phrased in constructive type theory and mechanised in the Coq proof assistant. Specifically, we examine the completeness of variants of classical and intuitionistic…

Logic in Computer Science · Computer Science 2021-12-15 Yannick Forster , Dominik Kirst , Dominik Wehr

Kleene algebra axioms are complete with respect to both language models and binary relation models. In particular, two regular expressions recognise the same language if and only if they are universally equivalent in the model of binary…

Logic in Computer Science · Computer Science 2023-06-22 Paul Brunet , Damien Pous

In the context of interactive theorem provers based on a dependent type theory, automation tactics (dedicated decision procedures, call of automated solvers, ...) are often limited to goals which are exactly in some expected logical…

Logic in Computer Science · Computer Science 2024-02-22 Valentin Blot , Denis Cousineau , Enzo Crance , Louise Dubois de Prisque , Chantal Keller , Assia Mahboubi , Pierre Vial

Reactive programs are ubiquitous in modern applications, and so verification is highly desirable. We present a verification strategy for reactive programs with a large or infinite state space utilising algebraic laws for reactive relations.…

Logic in Computer Science · Computer Science 2018-08-08 Simon Foster , Kangfeng Ye , Ana Cavalcanti , Jim Woodcock

Kleene algebra with tests (KAT) was introduced as an algebraic structure to model and reason about classic imperative programs, i.e. sequences of discrete transitions guarded by Boolean tests. This paper introduces two generalisations of…

Logic in Computer Science · Computer Science 2019-11-05 Leandro Gomes , Alexandre Madeira , Luís Soares Barbosa

This extended abstract is about an effort to build a formal description of a triangulation algorithm starting with a naive description of the algorithm where triangles, edges, and triangulations are simply given as sets and the most complex…

Logic in Computer Science · Computer Science 2018-09-05 Yves Bertot

The problem-solving in automated theorem proving (ATP) can be interpreted as a search problem where the prover constructs a proof tree step by step. In this paper, we propose a deep reinforcement learning algorithm for proof search in…

Machine Learning · Computer Science 2018-11-05 Mitsuru Kusumoto , Keisuke Yahata , Masahiro Sakai

We show that any regular pseudocomplemented Kleene algebra defined on an algebraic lattice is isomorphic to a rough set Kleene algebra determined by a tolerance induced by an irredundant covering.

Combinatorics · Mathematics 2019-04-18 Jouni Järvinen , Sándor Radeleczki

We introduce partially observable concurrent Kleene algebra (POCKA), an algebraic framework to reason about concurrent programs with control structures, such as conditionals and loops. POCKA enables reasoning about programs that can access…

Logic in Computer Science · Computer Science 2023-02-06 Jana Wagemaker , Paul Brunet , Simon Docherty , Tobias Kappé , Jurriaan Rot , Alexandra Silva

The need for formal definition of the very basis of mathematics arose in the last century. The scale and complexity of mathematics, along with discovered paradoxes, revealed the danger of accumulating errors across theories. Although,…

Logic in Computer Science · Computer Science 2018-09-10 Artem Yushkovskiy

In the realm of formal theorem proving, the Coq proof assistant stands out for its rigorous approach to verifying mathematical assertions and software correctness. Despite the advances in artificial intelligence and machine learning, the…

Artificial Intelligence · Computer Science 2024-04-03 Andreas Florath