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| Mirrors > Home > ILE Home > Th. List > ancoms | Unicode version | ||
| Description: Inference commuting conjunction in antecedent. (Contributed by NM, 21-Apr-1994.) |
| Ref | Expression |
|---|---|
| ancoms.1 |
|
| Ref | Expression |
|---|---|
| ancoms |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ancoms.1 |
. . 3
| |
| 2 | 1 | expcom 116 |
. 2
|
| 3 | 2 | imp 124 |
1
|
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