Studia Logica

, Volume 66, Issue 2, pp 273–283

Functional Dependencies between Variables


  • Natasha Alechina
    • School of Computer Science and Information TechnologyUniversity of Nottingham

DOI: 10.1023/A:1005200414624

Cite this article as:
Alechina, N. Studia Logica (2000) 66: 273. doi:10.1023/A:1005200414624


We consider a predicate logic Lfd where not all assignments of values to individual variables are possible. Some variables are functionally dependent on other variables. This makes sense if the models of logic are assumed to correspond to databases or states. We show that Lfd is undecidable but has a complete and sound sequent calculus formalisation.

quantifiersassignmentsfunctional dependencies
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© Kluwer Academic Publishers 2000