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| Mirrors > Home > ILE Home > Th. List > eleqtrdi | Unicode version | ||
| Description: A membership and equality inference. (Contributed by NM, 4-Jan-2006.) | 
| Ref | Expression | 
|---|---|
| eleqtrdi.1 | 
 | 
| eleqtrdi.2 | 
 | 
| Ref | Expression | 
|---|---|
| eleqtrdi | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | eleqtrdi.1 | 
. 2
 | |
| 2 | eleqtrdi.2 | 
. . 3
 | |
| 3 | 2 | a1i 9 | 
. 2
 | 
| 4 | 1, 3 | eleqtrd 2275 | 
1
 | 
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