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| Description: An equality theorem for substitution. |
| Ref | Expression |
|---|---|
| sbequ12 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sbequ1 1542 |
. 2
| |
| 2 | sbequ2 1543 |
. 2
| |
| 3 | 1, 2 | impbid 574 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: sbequ12r 1546 sbequ12rOLD 1547 sbequ12a 1548 sbid 1549 ax16 1579 sbco 1625 sbidmOLD 1628 sbco2 1629 sbcom 1632 ax16ALT 1648 sbcom2 1724 sb6a 1727 sbal1 1737 mopick 1833 2mo 1851 2eu6 1858 clelab 2013 sbab 2015 cbvralf 2276 cbvrexf 2277 cbvrab 2421 moi2 2435 moi 2436 reu2 2442 reu6 2443 sbhypf 2452 sbralie 2453 elrabsf 2486 cbvralsv 2490 cbvralsvOLD 2491 cbvrexsv 2492 cbvrexsvOLD 2493 sbcralg 2531 sbcrexg 2533 csbabgOLD 2589 iunrab 3299 iinab 3317 cbvopab1 3405 cbvopab1s 3406 opabidOLD 3558 opelopabsbOLD 3565 opelopabf 3572 tfis 3938 tfinds 3942 tfindsOLD 3943 tfindes 3946 findes 3983 ralxpf 4043 abrexex2 4847 cbvmpt 5011 ac6sfi 5509 uzind4s 7621 cau3ii 8166 bnj47 12417 bnj54OLD 12429 bnj971 12860 bnj1216 12989 bnj1306 13049 bnj1310 13050 bnj1366 13091 bnj1468 13145 bnj1492 13161 bnj149 13241 bnj607 13304 bnj873 13317 bnj1390 13513 setinds 13844 dfon2lem1 13849 tfisg 13912 wfisg 13917 frinsg 13941 findcard2 15745 fdc1 15813 pm13.193 16375 cbvralcsf 16411 cbvrexcsf 16412 cbvreucsf 16413 cbvrabcsf 16414 cbviotaf 16432 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-4 1319 |
| This theorem depends on definitions: df-bi 164 df-an 242 df-ex 1327 df-sb 1536 |