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 ?
Still, a defense of metaphysical necessity in the sense described above is, in fact, logically bound to that conclusion: if necessarily true, metaphysical statements are implied by any existential statement and its denial; hence, one could not deny metaphysics (in the strict sense) and consistently claim to know any existential statement.
The media and most politicians trumpeted only one option as a metaphysical necessity throughout the debate: We must raise the debt ceiling.
The feeling of the strength of the metaphysical necessity is based on the strength of the kind of necessity which is to be guessed.
On Fine's reading, an in-virtue claim is a statement of ontological or metaphysical ground when the conditional holds of metaphysical necessity.
The notion of metaphysical necessity is an ultimately primitive metaphysical notion (the notion of an essence is itself irreducible).
Existence and the good; metaphysical necessity in morals and politics.
In developing the principle of factiality, Meillassoux distinguishes his standpoint of the 'necessity of contingency' from a standpoint which would subsume contingency into a wider metaphysical framework, thus immunizing the decentering power of being's capacity-to-be-other in metaphysical necessity.
The penultimate paper in this part of the volume, by Latham, is an attempt to clarify the idea of token-physicalism, while the final paper is a fascinating attack by Leeds on the Kripkean notion of metaphysical necessity.
The application of this paradigm to metaphysical necessity might proceed from the association of that concept with those explored in Quine's "Natural Kinds.
If true, then when Kripke uses the modal operator for necessity, "[]", in formalizing inference assumption (2) as (x) [] (x = x), he must mean something like metaphysical necessity.
In this dense reevaluation of Kant's attempts to reconcile a priori knowledge with experiential knowledge, Greenberg deftly analyzes Kant's views of epistemic and metaphysical necessity.
He argues in defense of a version of modest non-reductive materialism on which the mental is, of metaphysical necessity, correlated with the physical.