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Mirrors > Home > ILE Home > Th. List > 19.28 | Unicode version |
Description: Theorem 19.28 of [Margaris] p. 90. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
19.28.1 |
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Ref | Expression |
---|---|
19.28 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 19.26 1415 |
. 2
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2 | 19.28.1 |
. . . 4
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3 | 2 | 19.3 1491 |
. . 3
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4 | 3 | anbi1i 446 |
. 2
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5 | 1, 4 | bitri 182 |
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 ax-ia2 105 ax-ia3 106 ax-5 1381 ax-gen 1383 ax-4 1445 |
This theorem depends on definitions: df-bi 115 df-nf 1395 |
This theorem is referenced by: aaan 1524 |
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