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Mirrors > Home > ILE Home > Th. List > 2ax17 | Unicode version |
Description: Quantification of two variables over a formula in which they do not occur. (Contributed by Alan Sare, 12-Apr-2011.) |
Ref | Expression |
---|---|
2ax17 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 19 | . 2 | |
2 | 1 | alrimivv 1803 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wal 1287 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-5 1381 ax-gen 1383 ax-17 1464 |
This theorem is referenced by: (None) |
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