## The New Encyclopaedia Britannica, Volume 23 |

### From inside the book

Results 1-3 of 94

Page 244

It is assumed that every proposition is either

is both

propositions. The function of an operator is to form a new proposition from one or

more ...

It is assumed that every proposition is either

**true**or false and that no propositionis both

**true**and false. Truth and falsity are said to be the truth values ofpropositions. The function of an operator is to form a new proposition from one or

more ...

Page 247

Formation rules 2 and 3 of Formation rides for PC are therefore replaced by the

rule that if a and ft are w//'s, (a~D ft) is a wff. As in ordinary PC, p D q is interpreted

as "p materially implies #"; i.e., as

Formation rules 2 and 3 of Formation rides for PC are therefore replaced by the

rule that if a and ft are w//'s, (a~D ft) is a wff. As in ordinary PC, p D q is interpreted

as "p materially implies #"; i.e., as

**true**except when p is**true**but q false.Page 266

In so doing, the logician gives a branch of science a formal language in which

there are logically

more ...

In so doing, the logician gives a branch of science a formal language in which

there are logically

**true**sentences having universal logical ranges and factually**true**sentences having universal logical ranges and factually**true**ones havingmore ...

### What people are saying - Write a review

#### LibraryThing Review

User Review - keylawk - LibraryThingThis is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review

#### The New Encyclopaedia Britannica (Encyclopaedia)

User Review - Not Available - Book VerdictFor virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review

### Other editions - View all

### Common terms and phrases

20th century Aeschylus allegory ancient Aristotle audience axiomatic axioms ballads biography calculus called character children's literature classical comedy comic criticism culture D.H. Lawrence derived dialects drama electrons elements energy English epic essay example fiction Figure formal France French function genre German grammar Greek hero human inference interpretation John John Locke known language Latin light Lincoln linguistics Lisbon literary logic logician London luminescence Luther Luxembourg meaning medieval mereology metalogic metre modal logic modern moral morpheme nanometres narrative nature noun expressions novel novelists original philosophical phoneme photons plays poem poet poetry predicate premises propositions prose prosody relation Renaissance romance rules saga satire semantic sense sentence set theory social story structure style syllogisms syllogistic symbols T.S. Eliot tagmeme theatre theme theorem theory tion tradition tragedy tragic true truth valid variables verse wave words writing written