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Mirrors > Home > ILE Home > Th. List > 19.9t | Unicode version |
Description: A closed version of 19.9 1581. (Contributed by NM, 5-Aug-1993.) (Revised by Mario Carneiro, 24-Sep-2016.) (Proof shortended by Wolf Lammen, 30-Dec-2017.) |
Ref | Expression |
---|---|
19.9t |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-nf 1396 |
. . 3
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2 | 19.9ht 1578 |
. . 3
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3 | 1, 2 | sylbi 120 |
. 2
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4 | 19.8a 1528 |
. 2
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5 | 3, 4 | impbid1 141 |
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 105 ax-ia2 106 ax-ia3 107 ax-gen 1384 ax-ie1 1428 ax-ie2 1429 ax-4 1446 |
This theorem depends on definitions: df-bi 116 df-nf 1396 |
This theorem is referenced by: 19.9d 1597 19.23t 1613 spimt 1672 exdistrfor 1729 sbequi 1768 sbft 1777 vtoclegft 2692 copsexg 4080 |
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