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Mirrors > Home > ILE Home > Th. List > ssrab2 | Unicode version |
Description: Subclass relation for a restricted class. (Contributed by NM, 19-Mar-1997.) |
Ref | Expression |
---|---|
ssrab2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rab 2477 |
. 2
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2 | ssab2 3254 |
. 2
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3 | 1, 2 | eqsstri 3202 |
1
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