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| Description: Inference from equality to equivalence of equalities. |
| Ref | Expression |
|---|---|
| eqeq1i.1 |
|
| Ref | Expression |
|---|---|
| eqeq1i |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeq1i.1 |
. 2
| |
| 2 | eqeq1 1484 |
. 2
| |
| 3 | 1, 2 | ax-mp 7 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: eqeq12i 1491 ssequn2 2206 sseqin2 2232 dfss4 2245 disj 2315 undisj1 2324 undisj2 2325 undif 2347 iin0 2745 opeqsn 2808 reuuni1 2888 reusn 2898 dfepfr 2938 epfrc 2939 unisuc 3052 dmopab3 3328 dm0rn0 3336 dmxp 3338 ssdmres 3387 imadisj 3428 args 3434 dffr3 3437 dminxp 3489 dfrel3 3495 fncnv 3567 f1o4 3702 f1ocnv 3707 fvopab3ig 3784 fopab2 3829 tz7.44-2 3935 tz7.49c 3966 oprabval 4029 oprabvalig 4030 oprssdm 4048 map0 4350 pw2en 4452 mapunen 4508 zfreg2 4606 sucprcreg 4609 inf3lem2 4623 rankeq0 4706 rankxpsuc 4725 scott0s 4729 cplem1 4730 zorn2lem7 4804 recexsr 5228 map2psrpr 5232 supsrlem2 5238 subadd 5383 subadd2 5385 subsub23 5386 neg11 5418 negcon1 5419 renegcl 5428 lesubadd 5607 divmul 5717 xrsupss 6080 xrinfmss 6081 elznn0 6151 zltp1let 6183 sqeqor 6648 sqr2irrlem1 6725 crulem 6737 negreb 6795 abs00 6842 cvgcmpub 7185 geoser 7234 eirrlem5 7393 elcls 7701 islp2 7744 qdensere 7748 metne0 7818 lpbl 7877 bcthlem9 8004 nmlno0lem 8449 logeftb 8759 hvsubeq0 8925 hvsubadd 8928 pjoc2 9266 pjoml3 9524 cmbr3 9538 nonbool 9591 pjss2 9620 hosubeq0 9747 dmadjrnb 9825 nmlnop0ALT 9915 nmcopexlem1 9946 nmcfnexlem1 9975 nmopcoadj0 10031 pj3lem1 10129 stm1r 10166 jplem2 10191 atoml2 10305 irredlem1 10312 cdj3lem3 10360 oprabvaligg 10435 efilcp 10556 efilcp2 10561 homib 10695 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-gen 965 ax-17 973 ax-4 975 ax-5o 977 ax-ext 1462 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-cleq 1472 |