Non-classical logic | Substructural logic | Linear logic

Linear logic

Linear logic is a substructural logic proposed by Jean-Yves Girard as a refinement of classical and intuitionistic logic, joining the dualities of the former with many of the constructive properties of the latter. Although the logic has also been studied for its own sake, more broadly, ideas from linear logic have been influential in fields such as programming languages, game semantics, and quantum physics (because linear logic can be seen as the logic of quantum information theory), as well as linguistics, particularly because of its emphasis on resource-boundedness, duality, and interaction. Linear logic lends itself to many different presentations, explanations, and intuitions.Proof-theoretically, it derives from an analysis of classical sequent calculus in which uses of (the structural rules) contraction and weakening are carefully controlled. Operationally, this means that logical deduction is no longer merely about an ever-expanding collection of persistent "truths", but also a way of manipulating resources that cannot always be duplicated or thrown away at will. In terms of simple denotational models, linear logic may be seen as refining the interpretation of intuitionistic logic by replacing cartesian (closed) categories by symmetric monoidal (closed) categories, or the interpretation of classical logic by replacing Boolean algebras by C*-algebras. (Wikipedia).

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From playlist Basics: Linear Algebra

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Undecidable problem | Monotonicity of entailment | Chu space | Substructural logic | Logical harmony | Game semantics | Normal modal logic | Identity element | Duality (mathematics) | Logical consequence | Analytic proof | Frame problem | Computability logic | EXPSPACE | Logical truth | Logical disjunction | Atomic formula | Sequent calculus | Idempotency of entailment | Structural rule | Proof theory | Backus–Naur form | Affine logic | Substructural type system | Higher-order logic | Uniqueness type | Ludics | Denotational semantics | De Morgan's laws | Proof net | Involution (mathematics) | PSPACE-complete | Admissible rule | Logical connective | Completeness of atomic initial sequents | Cut-elimination theorem | Intuitionistic logic | Canonical form | Logical conjunction | Classical logic | Geometry of interaction | First-order logic | Noncommutative logic | Turnstile (symbol)