Abstract: We present initial limit Datalog, a new extensible class of constrained Horn clauses for which the satisfiability problem is decidable. The class may be viewed as a generalisation to ...

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The development of algebraic geometry over groups, geometric group theory and group-based cryptography, has led to there being a tremendous recent interest in infinite group theory. This volume ...

Abstract: Petri nets (PNs) are graphical and mathematical tools used to model a variety of discrete event systems and analyze their properties. Reachability is their fundamental property that is ...

Decidable equality can be useful to prove, but it is really tedious because it is formulaic. This could be automated. In Extensibella, we need to prove a form lemma for each constructor showing a term ...

Even especially attentive Supreme Court watchers might underestimate the importance of a pair of cases the Court subjected to three and a half hours of argument on January 17. In a term full of cases ...

Zulip discussion: https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/deriving.20DecidableEq.20fails.20with.20implicit.20argument. The equivalent in ...

Two students from the School of Computing Science received scholarship awards to help support their research projects. MSc student Yi Chen was awarded the 2023 Canada Graduate Scholarships-Master’s ...

Embedded systems are ubiquitous in our daily lives, from medical devices to automotive systems to smart homes, yet the most popular embedded programming language poses significant safety and security ...

Nine short stories about geometric higher categories. Today, I only want to focus on two basic questions about geometric higher categories: namely, what is the idea behind the connection of geometry ...