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| Mirrors > Home > ILE Home > Th. List > eqeltrrid | GIF version | ||
| Description: B membership and equality inference. (Contributed by NM, 4-Jan-2006.) |
| Ref | Expression |
|---|---|
| eqeltrrid.1 | ⊢ 𝐵 = 𝐴 |
| eqeltrrid.2 | ⊢ (𝜑 → 𝐵 ∈ 𝐶) |
| Ref | Expression |
|---|---|
| eqeltrrid | ⊢ (𝜑 → 𝐴 ∈ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeltrrid.1 | . . 3 ⊢ 𝐵 = 𝐴 | |
| 2 | 1 | eqcomi 2242 | . 2 ⊢ 𝐴 = 𝐵 |
| 3 | eqeltrrid.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ 𝐶) | |
| 4 | 2, 3 | eqeltrid 2325 | 1 ⊢ (𝜑 → 𝐴 ∈ 𝐶) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∈ wcel 2209 |
| 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: dmrnssfld 5045 cnvexg 5325 opabbrex 6132 offval 6310 resfunexgALT 6337 abrexexg 6347 abrexex2g 6349 opabex3d 6350 oprssdmm 6405 unfidisj 7229 residfi 7254 ssfii 7308 djuexb 7385 nqprlu 7915 iccshftr 10407 iccshftl 10409 iccdil 10411 icccntr 10413 mertenslem2 12322 exprmfct 12936 infpnlem1 13161 4sqlem13m 13205 ballotfilemfrcn0 13325 ennnfonelemg 13346 grpidvalg 13746 gzsumvalx 13762 grppropstrg 13877 releqgg 14076 eqgex 14077 prdsval 14257 prdsbaslemss 14258 aprprop 14685 issubassa 15097 0opn 15198 difopn 15300 tgrest 15361 txbasex 15449 txdis1cn 15470 cnmptid 15473 cnmptc 15474 cnmpt1st 15480 cnmpt2nd 15481 cnmpt2c 15482 hmeoima 15502 hmeocld 15504 fsumcncntop 15759 expcn 15761 plycoeid3 15949 |
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