Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > eleq1a | Structured version Visualization version GIF version |
Description: A transitive-type law relating membership and equality. (Contributed by NM, 9-Apr-1994.) |
Ref | Expression |
---|---|
eleq1a | ⊢ (𝐴 ∈ 𝐵 → (𝐶 = 𝐴 → 𝐶 ∈ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq1 2676 | . 2 ⊢ (𝐶 = 𝐴 → (𝐶 ∈ 𝐵 ↔ 𝐴 ∈ 𝐵)) | |
2 | 1 | biimprcd 239 | 1 ⊢ (𝐴 ∈ 𝐵 → (𝐶 = 𝐴 → 𝐶 ∈ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1475 ∈ wcel 1977 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-an 385 df-ex 1696 df-cleq 2603 df-clel 2606 |
This theorem is referenced by: elex2 3189 elex22 3190 reu6 3362 disjne 3974 eqoreldif 4172 ordelinel 5742 ssimaex 6173 fnex 6386 f1ocnv2d 6784 peano5 6981 tfrlem8 7367 tz7.48-2 7424 tz7.49 7427 eroprf 7732 onfin 8036 pssnn 8063 ac6sfi 8089 elfiun 8219 brwdom 8355 ficardom 8670 ficard 9266 tskxpss 9473 inar1 9476 rankcf 9478 tskuni 9484 gruun 9507 nsmallnq 9678 prnmadd 9698 genpss 9705 eqlei 10026 eqlei2 10027 renegcli 10221 supaddc 10867 supadd 10868 supmul1 10869 supmullem2 10871 supmul 10872 nn0ind-raph 11353 uzwo 11627 iccid 12091 hashvnfin 13012 brfi1indlem 13133 mertenslem2 14456 4sqlem1 15490 4sqlem4 15494 4sqlem11 15497 symggen 17713 psgnran 17758 odlem1 17777 gexlem1 17817 lssneln0 18773 lss1d 18784 lspsn 18823 lsmelval2 18906 psgnghm 19745 opnneiid 20740 cmpsublem 21012 metrest 22139 metustel 22165 dscopn 22188 ovolshftlem2 23085 subopnmbl 23178 deg1ldgn 23657 plyremlem 23863 coseq0negpitopi 24059 ppiublem1 24727 mptelee 25575 frgrancvvdeqlem1 26557 frgrawopreglem4 26574 shsleji 27613 spansnss 27814 spansncvi 27895 f1o3d 28813 sigaclcu2 29510 measdivcstOLD 29614 dfon2lem6 30937 bdayfo 31074 altxpsspw 31254 hfun 31455 ontgval 31600 ordtoplem 31604 ordcmp 31616 findreccl 31622 bj-xpnzex 32139 bj-snsetex 32144 topdifinfindis 32370 finxpreclem1 32402 ovoliunnfl 32621 volsupnfl 32624 heibor1lem 32778 heibor1 32779 lshpkrlem1 33415 lfl1dim 33426 leat3 33600 meetat2 33602 glbconxN 33682 pointpsubN 34055 pmapglbx 34073 linepsubclN 34255 dia2dimlem7 35377 dib1dim2 35475 diclspsn 35501 dih1dimatlem 35636 dihatexv2 35646 djhlsmcl 35721 hbtlem2 36713 hbtlem5 36717 rp-isfinite6 36883 snssiALTVD 38084 snssiALT 38085 elex2VD 38095 elex22VD 38096 fveqvfvv 39853 afv0fv0 39878 lswn0 40242 clel5 40303 nbuhgr2vtx1edgblem 40573 frgrncvvdeqlem1 41469 frgrwopreglem4 41484 lidlmmgm 41715 1neven 41722 cznrng 41747 gsumpr 41932 |
Copyright terms: Public domain | W3C validator |