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Mirrors > Home > MPE Home > Th. List > Mathboxes > ifpananb | Structured version Visualization version Unicode version |
Description: Factor conditional logic operator over conjunction in terms 2 and 3. (Contributed by RP, 21-Apr-2020.) |
Ref | Expression |
---|---|
ifpananb | if- if- if- |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | anor 510 | . . 3 | |
2 | anor 510 | . . 3 | |
3 | ifpbi23 37817 | . . 3 if- if- | |
4 | 1, 2, 3 | mp2an 708 | . 2 if- if- |
5 | ifpororb 37850 | . . . . 5 if- if- if- | |
6 | ifpnotnotb 37824 | . . . . . 6 if- if- | |
7 | ifpnotnotb 37824 | . . . . . 6 if- if- | |
8 | 6, 7 | orbi12i 543 | . . . . 5 if- if- if- if- |
9 | 5, 8 | bitri 264 | . . . 4 if- if- if- |
10 | 9 | notbii 310 | . . 3 if- if- if- |
11 | ifpnotnotb 37824 | . . 3 if- if- | |
12 | anor 510 | . . 3 if- if- if- if- | |
13 | 10, 11, 12 | 3bitr4i 292 | . 2 if- if- if- |
14 | 4, 13 | bitri 264 | 1 if- if- if- |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wb 196 wo 383 wa 384 if-wif 1012 |
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-or 385 df-an 386 df-ifp 1013 |
This theorem is referenced by: ifpnannanb 37852 |
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