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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 7546 1lt2pi 7708 prarloclemarch2 7787 prarloclemlt 7861 0cn 8319 resubcli 8591 0reALT 8625 10nn 9801 numsucc 9826 nummac 9831 qreccl 10052 unirnioo 10386 fz0to4untppr 10542 cats1fvn 11552 4sqlem19 13211 dec2dvds 13213 mod2xnegi 13221 modsubi 13222 gcdi 13223 ballotfilemth 13333 fn0g 13748 fngzsum 13761 prdsex 14256 sn0topon 15280 retopbas 15715 blssioo 15745 hovercncf 15838 log2ublem2 16183 log2ublog2 16185 ppi1i 16233 cht2 16237 cht3 16238 bpos1lem 16270 lgslem4 16288 konigsberglem1 16895 bj-unex 17111 exmidsbthrlem 17233 |
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