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Description: Theorem *3.47 of [WhiteheadRussell] p. 113. It was proved by Leibniz, and it evidently pleased him enough to call it 'praeclarum theorema' (splendid theorem). (The proof was shortened by Wolf Lammen, 7-Apr-2013.) |
Ref | Expression |
---|---|
prth |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl 459 | . 2 | |
2 | simpr 463 | . 2 | |
3 | 1, 2 | anim12d 563 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 377 |
This theorem is referenced by: mo 1865 2mo 1922 euind 2512 reuind 2523 reuss2 2915 opelopabt 3596 reusv3i 3851 tfrlem5 5339 spanuni 13389 pm11.71 17417 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-3 7 ax-mp 8 |
This theorem depends on definitions: df-bi 185 df-an 379 |