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| Description: Lemma for 5-quantifier AC of Kurt Maes, Th. 4 1 <=> 4. |
| Ref | Expression |
|---|---|
| kmlem8 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ralnex 1650 |
. . . . 5
| |
| 2 | df-rex 1647 |
. . . . . . . 8
| |
| 3 | rexnal 1651 |
. . . . . . . 8
| |
| 4 | 2, 3 | bitr3 175 |
. . . . . . 7
|
| 5 | pm3.26 319 |
. . . . . . . . 9
| |
| 6 | 5 | 19.22i 1038 |
. . . . . . . 8
|
| 7 | ne0 2284 |
. . . . . . . 8
| |
| 8 | 6, 7 | sylibr 200 |
. . . . . . 7
|
| 9 | 4, 8 | sylbir 201 |
. . . . . 6
|
| 10 | 9 | r19.20si 1703 |
. . . . 5
|
| 11 | 1, 10 | sylbir 201 |
. . . 4
|
| 12 | biimt 730 |
. . . . . . . . 9
| |
| 13 | 12 | r19.20si 1703 |
. . . . . . . 8
|
| 14 | r19.15 1750 |
. . . . . . . 8
| |
| 15 | 13, 14 | syl 10 |
. . . . . . 7
|
| 16 | 15 | anbi2d 615 |
. . . . . 6
|
| 17 | 16 | exbidv 1277 |
. . . . 5
|
| 18 | kmlem2 4746 |
. . . . 5
| |
| 19 | 17, 18 | syl6rbbr 538 |
. . . 4
|
| 20 | 11, 19 | syl 10 |
. . 3
|
| 21 | 20 | pm5.74i 583 |
. 2
|
| 22 | pm4.64 226 |
. 2
| |
| 23 | 21, 22 | bitr 173 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: aceqkm 4761 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 ax-pr 2774 ax-un 2861 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-ral 1646 df-rex 1647 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-uni 2499 |