## The New Encyclopaedia Britannica, Volume 11Encyclopaedia Britannica, 1983 - Encyclopedias and dictionaries |

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Page 41

A

representing arbitrary formulas of PC. ... Given the standard interpretation, a wff of

PC becomes a proposition, true or false, when all of its

...

A

**variable**standing alone is a wff FR2. ... (In these rules a and /? are**variables**representing arbitrary formulas of PC. ... Given the standard interpretation, a wff of

PC becomes a proposition, true or false, when all of its

**variables**are replaced by...

Page 45

If x, y, z, . . . are used as individual

) and the symbols <p (phi), 0 (psi), x (chi), ... Here x is said to be the argument of 0

; a predicate (or predicate

If x, y, z, . . . are used as individual

**variables**(replaceable by names of individuals) and the symbols <p (phi), 0 (psi), x (chi), ... Here x is said to be the argument of 0

; a predicate (or predicate

**variable**) with only a single argument is said to be a ...Page 686

Charts for solving equations with three

painting by an unknown artist, 1853,. which one is linear and the other is

logarithmic (see 55). They are useful in plotting the results of experiments in

which one ...

Charts for solving equations with three

**variables**(Left) Richard Mather, oilpainting by an unknown artist, 1853,. which one is linear and the other is

logarithmic (see 55). They are useful in plotting the results of experiments in

which one ...

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19th century army atoms axiomatic axioms bearings became BIBLIOGRAPHY body centre century church coil dipoles Dutch economic electric electrons energy example ferromagnetic Figure fluid flux density force France French friction function gears German helium-3 Holland important industry King known land later Lo-yang load lock locomotion loess logic logicians logistic London Louis Low Countries lubricant luminescence Luther Lutheran Luxembourg lymph lymph nodes lymphatic Macau machines Mackenzie River Madagascar Madhya Pradesh magic magnesium magnetic field material mechanical ment Merina metal metalogic metre miles modal modal logic motion move movement Netherlands nodes nuclear operations particles percent political population predicate produced propositions provinces river rotation rule screw shaft speed square square miles stadholder surface syllogisms temperature theorem theory tion torque towns trans types United valid variables velocity wff's