Chapter 18

_REPRESENTATION OF PROPOSITIONS OF RELATION._

The Pair of Converse Propositions "Some x are y" = "Some y are x" 71

Three other similar Pairs "

The Pair of Converse Propositions "No x are y" = "No y are x" "

Three other similar Pairs "

The Proposition "All x are y" 72

The Proposition "All x are y" is _Double_, and is equivalent to the two Propositions "Some x exist" and "No x and y'" "

Seven other similar Propositions "

Rule for translating "All x are y" from abstract into subscript form, and _vice versâ_ "

pg-xxvii