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Mathbox for Norm Megill |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > dalemccnedd | Structured version Visualization version Unicode version |
Description: Lemma for dath 33313. Frequently-used utility lemma. (Contributed by NM, 15-Aug-2012.) |
Ref | Expression |
---|---|
da.ps0 |
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Ref | Expression |
---|---|
dalemccnedd |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | da.ps0 |
. . 3
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2 | simp31 1045 |
. . 3
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3 | 1, 2 | sylbi 199 |
. 2
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4 | 3 | necomd 2681 |
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 1671 ax-4 1684 ax-ext 2433 |
This theorem depends on definitions: df-bi 189 df-an 373 df-3an 988 df-cleq 2446 df-ne 2626 |
This theorem is referenced by: dalemswapyzps 33267 dalemrotps 33268 dalemcjden 33269 |
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