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| Mirrors > Home > MPE Home > Th. List > csbeq1a | Structured version Visualization version Unicode version | ||
| Description: Equality theorem for proper substitution into a class. (Contributed by NM, 10-Nov-2005.) |
| Ref | Expression |
|---|---|
| csbeq1a |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | csbid 3541 |
. 2
| |
| 2 | csbeq1 3536 |
. 2
| |
| 3 | 1, 2 | syl5eqr 2670 |
1
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