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| Mirrors > Home > MPE Home > Th. List > ifbieq12d | Structured version Visualization version Unicode version | ||
| Description: Equivalence deduction for conditional operators. (Contributed by Jeff Madsen, 2-Sep-2009.) |
| Ref | Expression |
|---|---|
| ifbieq12d.1 |
|
| ifbieq12d.2 |
|
| ifbieq12d.3 |
|
| Ref | Expression |
|---|---|
| ifbieq12d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ifbieq12d.1 |
. . 3
| |
| 2 | 1 | ifbid 4108 |
. 2
|
| 3 | ifbieq12d.2 |
. . 3
| |
| 4 | ifbieq12d.3 |
. . 3
| |
| 5 | 3, 4 | ifeq12d 4106 |
. 2
|
| 6 | 2, 5 | eqtrd 2656 |
1
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