Introduction Rules

Some articles on rules, introduction, introduction rules:

Ludics
... In proof theory, ludics is an analysis of the principles governing inference rules of mathematical logic ... propositions, says that the meaning of a proposition arises from its introduction and elimination rules ... between positive propositions, whose meaning arises from their introduction rules, and negative propositions, whose meaning arises from their elimination rules ...
Natural Deduction - Comparison With Other Foundational Approaches - Sequent Calculus
... In natural deduction the flow of information is bi-directional elimination rules flow information downwards by deconstruction, and introduction rules flow information upwards by assembly ... Kleene, in his seminal 1952 book Introduction to Metamathematics (ISBN 0-7204-2103-9), gave the first formulation of the sequent calculus in the modern style ... In the sequent calculus all inference rules have a purely bottom-up reading ...

Famous quotes containing the words rules and/or introduction:

    The five kings count the dead but do not soften
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    A hand rules pity as a hand rules heaven;
    Hands have no tears to flow.
    Dylan Thomas (1914–1953)

    For better or worse, stepparenting is self-conscious parenting. You’re damned if you do, and damned if you don’t.
    —Anonymous Parent. Making It as a Stepparent, by Claire Berman, introduction (1980, repr. 1986)