### Some articles on *rules, introduction, introduction rules*:

Ludics

... In proof theory, ludics is an analysis of the principles governing inference

... 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

... 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

The crusted wound nor stroke the brow;

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)

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