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Mirrors > Home > NFE Home > Th. List > albi | Unicode version |
Description: Theorem 19.15 of [Margaris] p. 90. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
albi |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bi1 178 |
. . 3
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2 | 1 | al2imi 1561 |
. 2
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3 | bi2 189 |
. . 3
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4 | 3 | al2imi 1561 |
. 2
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5 | 2, 4 | impbid 183 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1546 ax-5 1557 |
This theorem depends on definitions: df-bi 177 |
This theorem is referenced by: albii 1566 albidh 1590 19.16 1860 19.17 1861 intmin4 3956 dfiin2g 4001 |
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