Mathbox for Alexander van der Vekens |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > 2ralbiim | Structured version Visualization version Unicode version |
Description: Split a biconditional and distribute 2 quantifiers, analogous to 2albiim 1817 and ralbiim 3069. (Contributed by Alexander van der Vekens, 2-Jul-2017.) |
Ref | Expression |
---|---|
2ralbiim |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ralbiim 3069 | . . 3 | |
2 | 1 | ralbii 2980 | . 2 |
3 | r19.26 3064 | . 2 | |
4 | 2, 3 | bitri 264 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 wral 2912 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ral 2917 |
This theorem is referenced by: (None) |
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