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| Description: Inference from equality to equivalence of equalities. |
| Ref | Expression |
|---|---|
| cleq1i.1 |
|
| Ref | Expression |
|---|---|
| cleq1i |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cleq1i.1 |
. 2
| |
| 2 | cleq1 1107 |
. 2
| |
| 3 | 1, 2 | ax-mp 6 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: cleq12i 1114 ssequn2 1631 sseqin2 1656 dfss4 1667 rabn0 1716 disj 1733 undisj1 1739 undisj2 1740 ssundif 1764 exss 1881 reuuni1 1955 dfepfr 2184 epfrc 2185 unisuc 2299 dmopab2 2541 dm0rn0 2549 dmxp 2552 ssdmres 2585 dffr3 2620 f1o4 2807 f1ocnv 2811 fvopab3ig 2869 fopab2 2891 tz7.44-2 2967 tz7.49c 2998 oprabval 3047 oprabvalig 3048 elrnoprab 3054 oprssdm 3056 map0 3268 pw2en 3348 mapunen 3397 zfreg2 3448 sucprcreg 3451 inf3lem2 3465 scott0s 3544 cplem1 3545 kmlem3 3582 zornlem6 3608 zornlem7 3609 1pi 3805 recexsr 4010 map2psrpr 4014 supsrlem2 4020 subadd 4143 subsub 4144 subeq0 4163 neg11 4164 negcon1 4165 renegcl 4171 divmul 4218 elznn0 4576 zltp1let 4597 uzwo3lem1 4614 sqe0 4687 sqr2irrlem1 4777 negre 4825 abs00 4839 hvsubeq0 5035 hvsubadd 5038 pjoc2 5273 pjoml3 5496 cmbr3 5509 pjss2 5571 pj3lem1 5658 stm1r 5685 jplem2 5702 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-gen 677 ax-17 925 ax-ext 1074 |
| This theorem depends on definitions: df-bi 128 df-an 198 df-cleq 1097 |