Title
Logic for exact entailment
Abstract
An exact truthmaker for A is a state which, as well as guaranteeing A's truth, is wholly relevant to it. States with parts irrelevant to whether A is true do not count as exact truthmakers for A. Giving semantics in this way produces a very unusual consequence relation, on which conjunctions do not entail their conjuncts. This feature makes the resulting logic highly unusual. In this paper, we set out formal semantics for exact truthmaking and characterise the resulting notion of entailment, showing that it is compact and decidable. We then investigate the effect of various restrictions on the semantics. We also formulate a sequent-style proof system for exact entailment and give soundness and completeness results.
Year
DOI
Venue
2019
10.1017/S1755020318000151
REVIEW OF SYMBOLIC LOGIC
Keywords
Field
DocType
truthmaking,exact entailment,non-classical logic,semantics,mereology,sequent calculus
Discrete mathematics,Logical consequence,Truthmaker,Non-classical logic,Sequent calculus,Mereology,Decidability,Soundness,Completeness (statistics),Calculus,Mathematics
Journal
Volume
Issue
ISSN
12
3
1755-0203
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Kit Fine130975.15
Mark Jago2738.49