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Related theorems Unicode version |
| Description: An inference from a biconditional, related to modus ponens. |
| Ref | Expression |
|---|---|
| mpbi.min |
|
| mpbi.maj |
|
| Ref | Expression |
|---|---|
| mpbi |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mpbi.min |
. 2
| |
| 2 | mpbi.maj |
. . 3
| |
| 3 | 2 | biimp 151 |
. 2
|
| 4 | 1, 3 | ax-mp 7 |
1
|