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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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