By Morozov Andrey (auth.), Per Martin-Löf, Grigori Mints (eds.)
This quantity comprises a number of invited papers in addition to a range of the opposite contributions. The convention used to be the 1st assembly of the Soviet logicians attracted to com- puter technology with their Western opposite numbers. The papers record new effects and methods in purposes of deductive structures, deductive software synthesis and research, machine experiments in good judgment similar fields, theorem proving and common sense programming. It presents entry to in depth paintings on computing device common sense either within the USSR and in Western countries.
Read Online or Download COLOG-88: International Conference on Computer Logic Tallinn, USSR, December 12–16, 1988 Proceedings PDF
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Extra resources for COLOG-88: International Conference on Computer Logic Tallinn, USSR, December 12–16, 1988 Proceedings
Example text
The final coalgebra structure can be defined using a generalisation of the notion of Brzozowski derivatives, originally introduced for regular expressions and languages, as follows. Given a coalgebra (X, (o, δ) : X → S × X A ), and an element x ∈ X, we write xa for δ(x)(a), and call it the a-derivative of x; furthermore, we call o(x) the output value of x. The set S A can now be given a S × (−)A -coalgebra structure by defining, for σ ∈ S A , a ∈ A and w ∈ A∗ , σa (w) := σ(a · w) and by setting, furthermore, o(σ) := σ(λ), where λ is the empty word.
Relational and partial variable sets and basic predicate logic. J. Symbolic Logic 61(3), 843–872 (1996) 16. : Generic trace semantics via coinduction. Log. Meth. Comput. Sci. 3(4) (2007) 17. : Simulations in coalgebras. Theor. Comput. Sci. 327(1-2), 71–108 (2004) 18. : Trace semantics for coalgebras. In: Coalgebraic Methods in Computer Science, CMCS 2004. ENTCS, vol. 106, pp. 167–184 (2004) 19. : Mobile Processes in Bigraphs. PhD thesis, University of Cambridge (2006) 20. : Bisimulation from open maps.
Power [9]. We then turn to an endofunctor of the category CMS of complete metric spaces of special interest: the Hausdorff D. Pattinson and L. ): CMCS 2012, LNCS 7399, pp. 51–70, 2012. c IFIP International Federation for Information Processing 2012 52 J. Ad´ amek, S. S. Moss functor H assigning to every space X the space H X of all non-empty compact subsets of X with the Hausdorff metric. F. van Breugel et al. [8] proved that H is a λ-accessible functor for some cardinal λ. We sharpen their result here by proving that H is finitary.
