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Mirrors > Home > ILE Home > Th. List > 19.27h | Unicode version |
Description: Theorem 19.27 of [Margaris] p. 90. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
19.27h.1 |
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Ref | Expression |
---|---|
19.27h |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 19.26 1481 |
. 2
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2 | 19.27h.1 |
. . . 4
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3 | 2 | 19.3h 1553 |
. . 3
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4 | 3 | anbi2i 457 |
. 2
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5 | 1, 4 | bitri 184 |
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 1447 ax-gen 1449 ax-4 1510 |
This theorem depends on definitions: df-bi 117 |
This theorem is referenced by: aaanh 1586 19.27v 1899 |
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