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Mirrors > Home > MPE Home > Th. List > ifclda | Structured version Visualization version Unicode version |
Description: Conditional closure. (Contributed by Jeff Madsen, 2-Sep-2009.) |
Ref | Expression |
---|---|
ifclda.1 | |
ifclda.2 |
Ref | Expression |
---|---|
ifclda |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iftrue 4092 | . . . 4 | |
2 | 1 | adantl 482 | . . 3 |
3 | ifclda.1 | . . 3 | |
4 | 2, 3 | eqeltrd 2701 | . 2 |
5 | iffalse 4095 | . . . 4 | |
6 | 5 | adantl 482 | . . 3 |
7 | ifclda.2 | . . 3 | |
8 | 6, 7 | eqeltrd 2701 | . 2 |
9 | 4, 8 | pm2.61dan 832 | 1 |
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