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| Mirrors > Home > MPE Home > Th. List > mpd | Structured version Visualization version Unicode version | ||
| Description: A modus ponens deduction.
A translation of natural deduction rule
|
| Ref | Expression |
|---|---|
| mpd.1 |
|
| mpd.2 |
|
| Ref | Expression |
|---|---|
| mpd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mpd.1 |
. 2
| |
| 2 | mpd.2 |
. . 3
| |
| 3 | 2 | a2i 14 |
. 2
|
| 4 | 1, 3 | ax-mp 5 |
1
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