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| Description: Inference from equality to equivalence of equalities. |
| Ref | Expression |
|---|---|
| eqeq2i.1 |
|
| Ref | Expression |
|---|---|
| eqeq2i |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeq2i.1 |
. 2
| |
| 2 | eqeq2 1476 |
. 2
| |
| 3 | 1, 2 | ax-mp 7 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: eqeq12i 1480 eqtr 1487 rabid2 1762 dfss2 2048 ssequn1 2190 preq12b 2474 preqsn 2477 pwex 2735 opprc3 2787 opeqpr 2792 wefrc 2933 orddif 3065 onuninsuc 3098 funopg 3533 funimaexg 3561 fnressn 3822 fressnfv 3823 fvresex 3842 abrexexlem2 3844 dfrdg2 3918 rdgsucopab 3931 rdgsucopabn 3932 frsucopab 3939 fnoprval 4002 elxp6 4086 eqerlem 4254 qsid 4285 pwfi 4545 rankr1 4646 ac6lem 4726 cardeq0 4804 card1 4805 cf0 4882 addcompr 5095 mulcompr 5097 axrnegex 5255 axrrecex 5256 pnfnemnf 5509 mul0or 5663 muleqaddt 5669 dfnn2 5884 sqr00t 6644 sqr2irrlem4 6657 cjreb 6716 cjne0t 6766 fsumser0f 6939 fsumser1f 6940 binomlem6 7009 reeff1o 7368 subtop 7588 sn0top 7589 ismet 7737 dfms2 7738 msflem 7742 oprcn 7911 fsumcnlem 7923 isgrp 7975 ringi 8079 vci 8104 spwval2 8577 efifolem2 8638 efifolem6 8642 chnle 9323 h1de2ctlem 9394 cmcmlem 9451 cmcm2 9453 cmbr2 9456 osumcor2 9507 pjss2 9542 ho01 9671 nmop0h 9831 pjclem1 10033 jplem1 10105 atabs2 10237 cdj3lem3 10270 cdj3lem3b 10272 cayleylem3 10318 fine 10348 isalg 10497 algi 10504 dedi 10514 cati 10532 hgralem 10606 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-gen 960 ax-17 968 ax-4 970 ax-5o 972 ax-ext 1452 |
| This theorem depends on definitions: df-bi 147 df-an 225 df-cleq 1462 |