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Mirrors > Home > MPE Home > Th. List > Mathboxes > e021 | Structured version Visualization version Unicode version |
Description: A virtual deduction elimination rule. (Contributed by Alan Sare, 24-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
e021.1 | |
e021.2 | |
e021.3 | |
e021.4 |
Ref | Expression |
---|---|
e021 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | e021.1 | . . 3 | |
2 | 1 | vd01 38822 | . 2 |
3 | e021.2 | . 2 | |
4 | e021.3 | . 2 | |
5 | e021.4 | . 2 | |
6 | 2, 3, 4, 5 | e121 38881 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wvd1 38785 wvd2 38793 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 197 df-an 386 df-vd1 38786 df-vd2 38794 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |