Description: Relationship between three restricted universal and existential quantifiers. (Contributed by Thierry Arnoux, 12-Jul-2020) (Proof shortened by Wolf Lammen, 18-May-2023)
Ref | Expression | ||
---|---|---|---|
Assertion | ralnex3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ralnex | ||
2 | 1 | 2ralbii | |
3 | ralnex2 | ||
4 | 2 3 | bitri |