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| Mirrors > Home > ILE Home > Th. List > rspc2gv | Unicode version | ||
| Description: Restricted specialization with two quantifiers, using implicit substitution. (Contributed by BJ, 2-Dec-2021.) |
| Ref | Expression |
|---|---|
| rspc2gv.1 |
|
| Ref | Expression |
|---|---|
| rspc2gv |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ral 2491 |
. 2
| |
| 2 | df-ral 2491 |
. . . . 5
| |
| 3 | 2 | imbi2i 226 |
. . . 4
|
| 4 | 3 | albii 1494 |
. . 3
|
| 5 | 19.21v 1897 |
. . . . . 6
| |
| 6 | 5 | bicomi 132 |
. . . . 5
|
| 7 | 6 | albii 1494 |
. . . 4
|
| 8 | impexp 263 |
. . . . . . 7
| |
| 9 | eleq1 2270 |
. . . . . . . . 9
| |
| 10 | eleq1 2270 |
. . . . . . . . 9
| |
| 11 | 9, 10 | bi2anan9 606 |
. . . . . . . 8
|
| 12 | rspc2gv.1 |
. . . . . . . 8
| |
| 13 | 11, 12 | imbi12d 234 |
. . . . . . 7
|
| 14 | 8, 13 | bitr3id 194 |
. . . . . 6
|
| 15 | 14 | spc2gv 2871 |
. . . . 5
|
| 16 | 15 | pm2.43a 51 |
. . . 4
|
| 17 | 7, 16 | biimtrid 152 |
. . 3
|
| 18 | 4, 17 | biimtrid 152 |
. 2
|
| 19 | 1, 18 | biimtrid 152 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2189 |
| This theorem depends on definitions: df-bi 117 df-nf 1485 df-sb 1787 df-clab 2194 df-cleq 2200 df-clel 2203 df-ral 2491 df-v 2778 |
| This theorem is referenced by: difinfsnlem 7227 difinfsn 7228 seqvalcd 10643 seqovcd 10649 qtopbasss 15108 apdiff 16189 |
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