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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 1521 |
. 2
| |
| 3 | 1, 2 | ax-mp 7 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: eqeq12i 1525 eqtri 1532 rabid2 1808 dfss2 2102 ssequn1 2244 preq12b 2531 preqsn 2534 pwex 2797 opprc3 2850 opeqpr 2856 wefrc 2998 orddif 3130 onuninsuci 3163 funopg 3622 funimaexg 3650 fnressn 3913 fressnfv 3914 fvresex 3933 abrexexlem2 3935 dfrdg2 4009 rdgsucopab 4022 rdgsucopabn 4023 frsucopab 4030 fnoprval 4094 elxp6 4178 eqerlem 4354 qsid 4388 rankr1 4760 ac6lem 4840 cardeq0 4919 card1 4920 cf0 4999 addcompr 5212 mulcompr 5214 axrnegex 5372 axrrecex 5373 mul0ori 5780 muleqadd 5786 dfnn2 6023 sqr00 6837 sqr2irrlem4 6850 cjrebi 6904 cjne0 6954 fsumser0fi 7124 fsumser1fi 7125 binomlem6 7194 reeff1o 7550 subtop 7768 sn0top 7769 ismet 7918 dfms2 7919 msflem 7923 oprcn 8097 fsumcnlem 8109 isgrp 8161 ringi 8261 vci 8286 spwval2 8772 efifolem2 8842 efifolem6 8846 chnlei 9528 h1de2ctlem 9598 cmcmlem 9654 cmcm2i 9656 cmbr2i 9659 osumcor2i 9710 pjss2i 9745 ho01i 9874 nmop0h 10033 pjclem1 10241 jplem1 10313 atabs2i 10447 cdj3lem3 10483 cdj3lem3b 10485 cayleylem3 10532 fine 10570 vri 10625 sfvlimOLD 10730 usinuniop 10753 isalg 10788 algi 10795 dedi 10805 cati 10823 hgralem 10912 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-gen 995 ax-17 1003 ax-4 1005 ax-5o 1007 ax-ext 1494 |
| This theorem depends on definitions: df-bi 145 df-an 223 df-cleq 1505 |