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Mirrors > Home > ILE Home > Th. List > equtr | Unicode version |
Description: A transitive law for equality. (Contributed by NM, 23-Aug-1993.) |
Ref | Expression |
---|---|
equtr |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-8 1483 |
. 2
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2 | 1 | equcoms 1685 |
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-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: equtrr 1687 equequ1 1689 equveli 1733 equvin 1836 |
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