modal logic

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modal logic

n
1. (Logic) the logical study of such philosophical concepts as necessity, possibility, contingency, etc
2. (Logic) the logical study of concepts whose formal properties resemble certain moral, epistemological, and psychological concepts. See also alethic, deontic, epistemic, doxastic
3. (Logic) any formal system capable of being interpreted as a model for the behaviour of such concepts
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.modal logic - the logical study of necessity and possibility
logic - the branch of philosophy that analyzes inference
2.modal logic - a system of logic whose formal properties resemble certain moral and epistemological concepts
formal logic, mathematical logic, symbolic logic - any logical system that abstracts the form of statements away from their content in order to establish abstract criteria of consistency and validity
alethic logic - the modal logic of necessity and possibility and contingency
deontic logic - the modal logic of obligation and permissibility
epistemic logic - the modal logic of knowledge and uncertainty and ignorance
doxastic logic - the modal logic of belief and disbelief
References in periodicals archive ?
After discussing ancient counterfactual hypotheses, the authors explicate the views on impossible propositions and indirect proofs by the twelfth century Islamic philosopher Averroes.
This hybrid account (1) distinguishes many intuitively distinct impossible propositions; (2) identifies impossible propositions with extensional constructions; and (3) avoids resorting to primitive modality, at least so far as Lewisian modal realism does.
Impossible propositions at least have a stable truth value.