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Mirrors > Home > MPE Home > Th. List > ralnex3 | Structured version Visualization version Unicode version |
Description: Relationship between three restricted universal and existential quantifiers. (Contributed by Thierry Arnoux, 12-Jul-2020.) |
Ref | Expression |
---|---|
ralnex3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | notnotb 304 | . 2 | |
2 | notnotb 304 | . . . . 5 | |
3 | 2 | rexbii 3041 | . . . 4 |
4 | 3 | 2rexbii 3042 | . . 3 |
5 | rexnal3 3044 | . . 3 | |
6 | 4, 5 | bitr2i 265 | . 2 |
7 | 1, 6 | xchbinx 324 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wb 196 wral 2912 wrex 2913 |
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-ex 1705 df-ral 2917 df-rex 2918 |
This theorem is referenced by: axtgupdim2 25370 |
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