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| Description: Equality implies equivalence of equalities. |
| Ref | Expression |
|---|---|
| eqeq2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeq1 1473 |
. 2
| |
| 2 | eqcom 1469 |
. 2
| |
| 3 | eqcom 1469 |
. 2
| |
| 4 | 1, 2, 3 | 3bitr4g 553 |
1
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| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: eqeq2i 1477 eqeq2d 1478 eqeq12 1479 eleq1 1526 neeq2 1583 eqvinc 1874 alexeq 1876 ceqex 1877 moeq3 1912 mo2icl 1914 moi 1915 eqif 2367 sneq 2407 preqr1 2472 prel12 2475 dtru 2762 opthg 2778 ideqgOLD 2825 solin 2848 so 2855 euuni 2871 reuuni2f 2873 dfwe2 2925 ordequn 3070 findsg 3147 tfindsg 3152 ideqg 3266 resieq 3360 funopg 3533 fneq2 3569 foeq3 3655 tz6.12f 3723 tz6.12i 3726 funbrfv 3735 funopfvg 3737 fnbrfvb 3738 funbrfvbg 3742 fvelima 3749 fvopab2 3776 fconst5 3833 f1fvf 3860 f1fveq 3861 isowe 3888 f1oweALT 3891 caoprcan 4041 oawordeu 4173 eceqopreq 4297 2dom 4408 fundmen 4409 nneneq 4492 aceq5 4712 alephfp 4872 cardcf 4883 cfeq0 4886 ltsopq 5047 ltexpq 5052 halfpq 5054 ltsosr 5175 map2psrpr 5192 ltsor 5233 addcant 5324 subvalt 5329 subadd 5343 subaddt 5347 neg11t 5381 mulcant2 5660 divval 5673 divmul 5674 divmult 5676 div11t 5721 rec11 5734 redivcl 5754 nnleltp1t 5901 nn0ind-raph 6162 sq11t 6560 sqeqort 6580 nn0opth2t 6598 crut 6668 replimt 6692 climuni 7036 efcltlem2 7247 reeff1 7350 reeff1olem2 7365 reeff1olem2OLD 7367 acdc3 7429 acdc5 7435 infpn2 7452 meteq0 7751 dscmet 7856 isgrpi 7976 grpidinv2 7994 isgrp2i 8011 ghgrpilem3 8072 cosh111t 8632 efifolem1 8637 efifolem6 8642 hvsubeq0t 8856 hvaddcant 8858 hvsubaddt 8865 normsub0t 8924 hlimuni 9030 occllem5 9093 omls 9161 pjomlt 9184 nonbool 9513 pj11t 9576 lnopeqt 9849 nmopunt 9854 rnbra 9953 pjclem4a 10036 pj3lem1 10044 strlem4 10091 hstrlem4 10099 jplem1 10105 superpos 10189 ghomf1olem 10301 fiiu 10350 hmeogrp 10425 cmpida 10551 cmpidb 10552 ishomb 10560 ismonb2 10582 cmpmon 10585 |
| 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 |