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| Description: 2-variable restricted existential specialization, using implicit substitution. |
| Ref | Expression |
|---|---|
| rcla42v.1 |
|
| rcla42v.2 |
|
| Ref | Expression |
|---|---|
| rcla42ev |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rcla42v.2 |
. . . . 5
| |
| 2 | 1 | rcla4ev 2381 |
. . . 4
|
| 3 | 2 | anim2i 362 |
. . 3
|
| 4 | 3 | 3impb 1063 |
. 2
|
| 5 | rcla42v.1 |
. . . 4
| |
| 6 | 5 | rexbidv 2124 |
. . 3
|
| 7 | 6 | rcla4ev 2381 |
. 2
|
| 8 | 4, 7 | syl 12 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: rcla4eopr 4915 2dom 5486 hartoglem 5692 unxpdomlem 5995 retopbas 8925 txbas 8933 txuni 8935 blelrn 9125 methausi 9159 blssioo 9191 hausnei2 10222 tx1cn 10223 tx2cn 10224 subtopmet 10256 altopelaltxp 14099 dtt2 14951 altretop 14997 elfiun 15369 fictblem 15370 hartoglemOLD 15383 reconnlem1 15446 filnetlem1 15640 filnetlem3 15642 filnetlem4 15643 filnetlem5 15644 eroprv 15734 txsubsp 15912 txopn 15913 txmet 15925 smprngpr 16200 islinei 17221 psubspi2 17229 elpaddri 17263 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-3an 860 df-ex 1327 df-sb 1536 df-clab 1872 df-cleq 1877 df-clel 1880 df-rex 2110 df-v 2294 |