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| Mirrors > Home > ILE Home > Th. List > eqeltrri | Unicode version | ||
| Description: Substitution of equal classes into membership relation. (Contributed by NM, 5-Aug-1993.) |
| Ref | Expression |
|---|---|
| eqeltrr.1 |
|
| eqeltrr.2 |
|
| Ref | Expression |
|---|---|
| eqeltrri |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeltrr.1 |
. . 3
| |
| 2 | 1 | eqcomi 2242 |
. 2
|
| 3 | eqeltrr.2 |
. 2
| |
| 4 | 2, 3 | eqeltri 2311 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-4 1563 ax-17 1579 ax-ial 1587 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 df-clel 2234 |
| This theorem is used by: 3eltr3i 2319 p0ex 4325 epse 4487 unex 4587 ordtri2orexmid 4670 onsucsssucexmid 4674 ordsoexmid 4709 ordtri2or2exmid 4718 ontri2orexmidim 4719 nnregexmid 4768 abrexex 6346 opabex3 6351 abrexex2 6353 abexssex 6354 abexex 6355 oprabrexex2 6363 tfr0dm 6593 exmidonfinlem 7545 1lt2pi 7707 prarloclemarch2 7786 prarloclemlt 7860 0cn 8318 resubcli 8590 0reALT 8624 10nn 9800 numsucc 9825 nummac 9830 qreccl 10051 unirnioo 10385 fz0to4untppr 10541 cats1fvn 11550 4sqlem19 13208 dec2dvds 13210 mod2xnegi 13218 modsubi 13219 gcdi 13220 ballotfilemth 13330 fn0g 13744 fngzsum 13757 prdsex 14221 sn0topon 15238 retopbas 15673 blssioo 15703 hovercncf 15796 log2ublem2 16141 log2ublog2 16143 ppi1i 16177 bpos1lem 16207 lgslem4 16220 konigsberglem1 16827 bj-unex 17043 exmidsbthrlem 17165 |
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