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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 5047 cnvexg 5328 opabbrex 6135 offval 6314 resfunexgALT 6341 abrexexg 6351 abrexex2g 6353 opabex3d 6354 oprssdmm 6409 unfidisj 7233 residfi 7258 ssfii 7313 djuexb 7390 nqprlu 7920 iccshftr 10413 iccshftl 10415 iccdil 10417 icccntr 10419 mertenslem2 12328 exprmfct 12942 infpnlem1 13167 4sqlem13m 13211 ballotfilemfrcn0 13331 ennnfonelemg 13352 grpidvalg 13752 gzsumvalx 13768 grppropstrg 13883 releqgg 14082 eqgex 14083 prdsval 14280 prdsbaslemss 14281 aprprop 14710 issubassa 15122 0opn 15232 difopn 15334 tgrest 15395 txbasex 15483 txdis1cn 15504 cnmptid 15507 cnmptc 15508 cnmpt1st 15514 cnmpt2nd 15515 cnmpt2c 15516 hmeoima 15536 hmeocld 15538 fsumcncntop 15793 expcn 15795 plycoeid3 15983 |
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