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Mirrors > Home > ILE Home > Th. List > equcomd | Unicode version |
Description: Deduction form of equcom 1683, symmetry of equality. For the versions for classes, see eqcom 2142 and eqcomd 2146. (Contributed by BJ, 6-Oct-2019.) |
Ref | Expression |
---|---|
equcomd.1 |
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Ref | Expression |
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equcomd |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | equcomd.1 |
. 2
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2 | equcom 1683 |
. 2
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3 | 1, 2 | sylib 121 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-gen 1426 ax-ie2 1471 ax-8 1483 ax-17 1507 ax-i9 1511 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: fisumcom2 11239 trirec0 13412 |
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