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| Mirrors > Home > ILE Home > Th. List > eleqtrd | GIF version | ||
| Description: Deduction that substitutes equal classes into membership. (Contributed by NM, 14-Dec-2004.) |
| Ref | Expression |
|---|---|
| eleqtrd.1 | ⊢ (𝜑 → 𝐴 ∈ 𝐵) |
| eleqtrd.2 | ⊢ (𝜑 → 𝐵 = 𝐶) |
| Ref | Expression |
|---|---|
| eleqtrd | ⊢ (𝜑 → 𝐴 ∈ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eleqtrd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ 𝐵) | |
| 2 | eleqtrd.2 | . . 3 ⊢ (𝜑 → 𝐵 = 𝐶) | |
| 3 | 2 | eleq2d 2308 | . 2 ⊢ (𝜑 → (𝐴 ∈ 𝐵 ↔ 𝐴 ∈ 𝐶)) |
| 4 | 1, 3 | mpbid 147 | 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: eleqtrrd 2318 3eltr3d 2321 eleqtrid 2327 eleqtrdi 2331 opth1 4376 0nelop 4388 tfisi 4734 nnpredlt 4771 iotam 5369 ercl 6818 erth 6853 ecelqsdm 6879 phpm 7167 exmidpweq 7216 pw1if 7584 cc2lem 7632 cc3 7634 suplocexprlemmu 8085 suplocexprlemloc 8088 lincmb01cmp 10405 fzopth 10467 fzoaddel2 10608 fzosubel2 10613 fzocatel 10617 zpnn0elfzo1 10626 fzoend 10640 peano2fzor 10650 infssfzcldc 10669 infssfzledc 10670 monoord2 10923 ser3mono 10924 bcpasc 11204 zfz1isolemiso 11291 swrdclg 11422 fisum0diag2 12214 isumsplit 12258 prodmodclem3 12342 prodmodclem2a 12343 nnmindc 12811 nnminle 12812 bassetsnn 13409 basmexd 13413 basm 13414 slotm 13415 mgm1 13690 grpidd 13703 gzsumress 13712 sgrppropd 13728 ismndd 13750 mndpropd 13753 issubmnd 13755 imasmnd 13760 grpidd2 13846 imasgrp 13914 submmulg 13969 subginvcl 13986 subgcl 13987 subgsub 13989 subgmulg 13991 1nsgtrivd 14022 quseccl0g 14034 kerf1ghm 14077 prdsbasfn 14181 prdsbasprj 14182 pwsplusgval 14208 pwsmulrval 14209 pwsinvg 14215 rngass 14238 rngcl 14243 rngpropd 14254 imasrng 14255 srgcl 14274 srgass 14275 srgpcomp 14294 srgpcompp 14295 srgpcomppsc 14296 crngcom 14318 ringass 14320 ringidmlem 14327 ringidss 14334 ringpropd 14343 imasring 14369 qusring2 14371 mulgass3 14391 dvdsrd 14401 1unit 14414 unitmulcl 14420 dvrvald 14441 rdivmuldivd 14451 elrhmunit 14484 rhmunitinv 14485 lringuplu 14503 subrngmcl 14517 subrg1 14539 subrgmcl 14541 subrgdv 14546 subrgunit 14547 resrhm 14556 aprval 14591 aprirr 14595 aprsym 14596 aprcotr 14597 opprdrng 14620 lmodprop2d 14685 lidlss 14813 lidl0cl 14820 lidlacl 14821 lidlnegcl 14822 rnglidlmsgrp 14834 2idllidld 14843 2idlridld 14844 2idlcpblrng 14860 qus1 14863 quscrng 14870 rspsn 14871 znf1o 14986 assapropd 15014 psrbagfi 15059 psrelbas 15066 iscnp4 15319 cnrest2r 15338 txbasval 15368 txlm 15380 xmetunirn 15459 xblss2ps 15505 blbas 15534 mopntopon 15544 isxms2 15553 metcnpi 15616 metcnpi2 15617 tgioo 15655 cncfmpt2fcntop 15700 limccl 15760 limcimolemlt 15765 limccnp2cntop 15778 dvmulxxbr 15803 dvcoapbr 15808 dvcjbr 15809 dvrecap 15814 plyaddlem1 15848 plymullem1 15849 plycoeid3 15858 lgseisenlem4 16192 usgr1vr 16489 clwwlkccatlem 16641 |
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