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Mirrors > Home > ILE Home > Th. List > sbequ2 | Unicode version |
Description: An equality theorem for substitution. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
sbequ2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-sb 1688 |
. 2
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2 | simpl 107 |
. . 3
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3 | 2 | com12 30 |
. 2
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4 | 1, 3 | syl5bi 150 |
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 |
This theorem depends on definitions: df-bi 115 df-sb 1688 |
This theorem is referenced by: stdpc7 1695 sbequ12 1696 sbequi 1762 mo23 1984 mopick 2021 |
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