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| Mirrors > Home > MPE Home > Th. List > 3bitrd | Structured version Visualization version Unicode version | ||
| Description: Deduction from transitivity of biconditional. (Contributed by NM, 13-Aug-1999.) |
| Ref | Expression |
|---|---|
| 3bitrd.1 |
|
| 3bitrd.2 |
|
| 3bitrd.3 |
|
| Ref | Expression |
|---|---|
| 3bitrd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3bitrd.1 |
. . 3
| |
| 2 | 3bitrd.2 |
. . 3
| |
| 3 | 1, 2 | bitrd 268 |
. 2
|
| 4 | 3bitrd.3 |
. 2
| |
| 5 | 3, 4 | bitrd 268 |
1
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