*23. CALCULUS OF RELATIONS.
Project Gutenberg EPUB3 edition
Whitehead, Alfred North and Russell, Bertrand
Summary of *23.
The definitions and propositions of this number are to be exact analogues of those of *22. Properties of relations which have no analogues for classes will not be dealt with till Section D. Proofs will be omitted in the present number, as they are precisely analogous to those of analogous propositions in *22. In this number, as always in future, capital Latin letters stand for expressions of the form , or, where they are not being used as apparent variables, for . The principal propositions of this number are the analogues of those of *22.
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Similar remarks apply to these definitions as to those of *22.
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