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Mirrors > Home > NFE Home > Th. List > nexdh | Unicode version |
Description: Deduction for generalization rule for negated wff. (Contributed by NM, 2-Jan-2002.) |
Ref | Expression |
---|---|
nexdh.1 |
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nexdh.2 |
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Ref | Expression |
---|---|
nexdh |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nexdh.1 |
. . 3
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2 | nexdh.2 |
. . 3
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3 | 1, 2 | alrimih 1565 |
. 2
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4 | alnex 1543 |
. 2
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5 | 3, 4 | sylib 188 |
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 df-ex 1542 |
This theorem is referenced by: nexd 1771 |
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