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Mathbox for Alan Sare |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > dfvd3an | Structured version Visualization version Unicode version |
Description: Definition of a 3-hypothesis virtual deduction in vd conjunction form. (Contributed by Alan Sare, 13-Jun-2015.) (Proof modification is discouraged.) (New usage is discouraged.) |
Ref | Expression |
---|---|
dfvd3an |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-vd1 37008 |
. 2
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2 | df-vhc3 37027 |
. . 3
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3 | 2 | imbi1i 332 |
. 2
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4 | 1, 3 | bitri 257 |
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 |
This theorem depends on definitions: df-bi 190 df-vd1 37008 df-vhc3 37027 |
This theorem is referenced by: dfvd3ani 37033 dfvd3anir 37034 |
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