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Mirrors > Home > ILE Home > Th. List > sb6rf | Unicode version |
Description: Reversed substitution. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Andrew Salmon, 25-May-2011.) |
Ref | Expression |
---|---|
sb5rf.1 |
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Ref | Expression |
---|---|
sb6rf |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sb5rf.1 |
. . 3
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2 | sbequ1 1779 |
. . . . 5
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3 | 2 | equcoms 1719 |
. . . 4
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4 | 3 | com12 30 |
. . 3
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5 | 1, 4 | alrimih 1480 |
. 2
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6 | sb2 1778 |
. . 3
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7 | 1 | sbid2h 1860 |
. . 3
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8 | 6, 7 | sylib 122 |
. 2
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9 | 5, 8 | impbii 126 |
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 106 ax-ia2 107 ax-ia3 108 ax-5 1458 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-11 1517 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 |
This theorem depends on definitions: df-bi 117 df-sb 1774 |
This theorem is referenced by: 2sb6rf 2002 eu1 2063 |
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