Symbolic Logic

Chapter 5

Chapter 5116 wordsPublic domain

_PROPOSITIONS GENERALLY._

§ 1.

_Introductory._

Technical meaning of "some" 8

'=Proposition=' "

'=Normal form=' of a Proposition "

'=Subject=', '=Predicate=', and '=Terms=' 9

§ 2.

_Normal form of a Proposition._

Its four parts:--

(1) '=Sign of Quantity=' 9

(2) Name of Subject "

(3) '=Copula=' "

(4) Name of Predicate "

§ 3.

_Various kinds of Propositions._

Three kinds of Propositions:--

(1) Begins with "Some". Called a '=Particular=' Proposition: also a Proposition '=in I=' 10

(2) Begins with "No". Called a '=Universal Negative=' Proposition: also a Proposition '=in E=' "

(3) Begins with "All". Called a '=Universal Affirmative=' Proposition: also a Proposition '=in A=' " pg-xviii A Proposition, whose Subject is an Individual, is to be regarded as Universal "

Two kinds of Propositions, 'Propositions of Existence', and 'Propositions of Relation' "