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Mirrors > Home > ILE Home > Th. List > 19.9ht | Unicode version |
Description: A closed version of one direction of 19.9 1535. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
19.9ht |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 19 | . . 3 | |
2 | 1 | ax-gen 1338 | . 2 |
3 | 19.23ht 1386 | . 2 | |
4 | 2, 3 | mpbii 136 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wal 1241 wex 1381 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-gen 1338 ax-ie2 1383 |
This theorem depends on definitions: df-bi 110 |
This theorem is referenced by: 19.9t 1533 19.9h 1534 19.9hd 1552 |
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