Mathbox for BJ |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-axext3 | Structured version Visualization version Unicode version |
Description: Remove dependency on ax-13 2246 from axext3 2604. (Contributed by BJ, 12-Jul-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
bj-axext3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elequ2 2004 | . . . . 5 | |
2 | 1 | bibi1d 333 | . . . 4 |
3 | 2 | albidv 1849 | . . 3 |
4 | equequ1 1952 | . . 3 | |
5 | 3, 4 | imbi12d 334 | . 2 |
6 | ax-ext 2602 | . 2 | |
7 | 5, 6 | bj-chvarvv 32726 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wal 1481 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ex 1705 |
This theorem is referenced by: bj-axext4 32770 |
Copyright terms: Public domain | W3C validator |