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| Mirrors > Home > MPE Home > Th. List > ifbieq2d | Structured version Visualization version Unicode version | ||
| Description: Equivalence/equality deduction for conditional operators. (Contributed by Paul Chapman, 22-Jun-2011.) |
| Ref | Expression |
|---|---|
| ifbieq2d.1 |
|
| ifbieq2d.2 |
|
| Ref | Expression |
|---|---|
| ifbieq2d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ifbieq2d.1 |
. . 3
| |
| 2 | 1 | ifbid 4108 |
. 2
|
| 3 | ifbieq2d.2 |
. . 3
| |
| 4 | 3 | ifeq2d 4105 |
. 2
|
| 5 | 2, 4 | eqtrd 2656 |
1
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