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Mirrors > Home > ILE Home > Th. List > erdm | Unicode version |
Description: The domain of an equivalence relation. (Contributed by Mario Carneiro, 12-Aug-2015.) |
Ref | Expression |
---|---|
erdm |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-er 6290 |
. 2
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2 | 1 | simp2bi 959 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 |
This theorem depends on definitions: df-bi 115 df-3an 926 df-er 6290 |
This theorem is referenced by: ercl 6301 erref 6310 errn 6312 erssxp 6313 erexb 6315 ereldm 6333 uniqs2 6350 iinerm 6362 th3qlem1 6392 0nnq 6921 nnnq0lem1 7003 prsrlem1 7286 gt0srpr 7292 0nsr 7293 |
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