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formation rule
noun
One of a set of rules ("formation rules") used to construct well-formed formulas of a formal language.
Exact(11)
Formation rule 1 is then replaced by: 1′.An expression consisting of a predicate variable or predicate constant of degree n followed by n terms is a wff.
Formation rules (see above Formation rules for PC), except that formation rule 3 can be abbreviated to "If α and β are wffs, is a wff," since ·, ⊃, and ≡ are not primitive.
This may be done most simply by adding propositional variables to the list of LPC primitives, adding a formation rule to the effect that a propositional variable standing alone is a wff, and deleting "LPC" in axiom schema 1.
ARM has three main steps: neighborhood formation, rule generation, and recommendation display.
It was also shown that Transport of Ions in Dynamic (TRIDYN) simulation combined with a simple compound formation rule provides a fair description of the resultant SiC distributions.
This also means, as will be discussed in section 7.4, that there is no formation rule that satisfies four seemingly plausible conditions and that in general yields a transitive and complete overall preference ordering.
Similar(49)
Rules that specify this are called formation rules.
Formation rules 2 and 3 (see above Formation rules for PC) are therefore replaced by the rule that if α and β are wffs, is a wff.
For greater ease in writing or reading formulas, the formation rules are often relaxed.
Otherwise, the formation rules remain as before, and the definition of validity is also as before, though simplified in obvious ways.
The formation rules are: An expression consisting of a predicate variable of degree n followed by n individual variables is a wff.
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