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Mirrors > Home > MPE Home > Th. List > syl6eqss | Structured version Visualization version Unicode version |
Description: A chained subclass and equality deduction. (Contributed by Mario Carneiro, 2-Jan-2017.) |
Ref | Expression |
---|---|
syl6eqss.1 | |
syl6eqss.2 |
Ref | Expression |
---|---|
syl6eqss |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | syl6eqss.1 | . 2 | |
2 | syl6eqss.2 | . . 3 | |
3 | 2 | a1i 11 | . 2 |
4 | 1, 3 | eqsstrd 3639 | 1 |
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