non-classical logic

C33663

concept

Non-classical logic is a broad family of logical systems that modify or reject one or more principles of classical logic (such as bivalence, excluded middle, or monotonicity) to better model reasoning in contexts like vagueness, inconsistency, modality, or resource sensitivity.

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All labels observed (6)

Label	Occurrences
modal logic	5
fixpoint logic	1
many-valued logic system	1
non-classical logic canonical	1
propositional logic extension	1
substructural logic	1

Description generation (CDg)

The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.

Instruction

generate a one-sentence description for a given conceptual class.
# Response Format
Return only the sentence: "Description: [one-sentence description of the conceptional class]"

Input

Class: non-classical logic

Generated description

Non-classical logic is a broad family of logical systems that modify or reject one or more principles of classical logic (such as bivalence, excluded middle, or monotonicity) to better model reasoning in contexts like vagueness, inconsistency, modality, or resource sensitivity.

Instances (8)

Instance	Via concept surface
Kleene strong three-valued logic	—
branching-time temporal logic CTL* surface form: CTL*	modal logic
CTL*	modal logic
linear temporal logic	modal logic
linear logic	substructural logic
Kleene surface form: Kleene’s strong three-valued logic	many-valued logic system
mu-calculus surface form: μ-calculus	modal logic
LTL	modal logic