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| Mirrors > Home > ILE Home > Th. List > mpdan | Unicode version | ||
| Description: An inference based on modus ponens. (Contributed by NM, 23-May-1999.) (Proof shortened by Wolf Lammen, 22-Nov-2012.) |
| Ref | Expression |
|---|---|
| mpdan.1 |
|
| mpdan.2 |
|
| Ref | Expression |
|---|---|
| mpdan |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 19 |
. 2
| |
| 2 | mpdan.1 |
. 2
| |
| 3 | mpdan.2 |
. 2
| |
| 4 | 1, 2, 3 | syl2anc 411 |
1
|
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