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Mirrors > Home > MPE Home > Th. List > ineq1 | Structured version Visualization version GIF version |
Description: Equality theorem for intersection of two classes. (Contributed by NM, 14-Dec-1993.) (Proof shortened by SN, 20-Sep-2023.) |
Ref | Expression |
---|---|
ineq1 | ⊢ (𝐴 = 𝐵 → (𝐴 ∩ 𝐶) = (𝐵 ∩ 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rabeq 3431 | . 2 ⊢ (𝐴 = 𝐵 → {𝑥 ∈ 𝐴 ∣ 𝑥 ∈ 𝐶} = {𝑥 ∈ 𝐵 ∣ 𝑥 ∈ 𝐶}) | |
2 | dfin5 3889 | . 2 ⊢ (𝐴 ∩ 𝐶) = {𝑥 ∈ 𝐴 ∣ 𝑥 ∈ 𝐶} | |
3 | dfin5 3889 | . 2 ⊢ (𝐵 ∩ 𝐶) = {𝑥 ∈ 𝐵 ∣ 𝑥 ∈ 𝐶} | |
4 | 1, 2, 3 | 3eqtr4g 2858 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 ∩ 𝐶) = (𝐵 ∩ 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1538 ∈ wcel 2111 {crab 3110 ∩ cin 3880 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-ex 1782 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-rab 3115 df-in 3888 |
This theorem is referenced by: ineq2 4133 ineq12 4134 ineq1i 4135 ineq1d 4138 unineq 4204 dfrab3ss 4233 disjeq0 4363 intprg 4872 inex1g 5187 reseq1 5812 sspred 6124 isofrlem 7072 qsdisj 8357 fiint 8779 elfiun 8878 dffi3 8879 inf3lema 9071 dfac5lem5 9538 kmlem12 9572 kmlem14 9574 fin23lem24 9733 fin23lem26 9736 fin23lem23 9737 fin23lem22 9738 fin23lem27 9739 ingru 10226 uzin2 14696 incexclem 15183 elrestr 16694 firest 16698 inopn 21504 isbasisg 21552 basis1 21555 basis2 21556 tgval 21560 fctop 21609 cctop 21611 ntrfval 21629 elcls 21678 clsndisj 21680 elcls3 21688 neindisj2 21728 tgrest 21764 restco 21769 restsn 21775 restcld 21777 restcldi 21778 restopnb 21780 neitr 21785 restcls 21786 ordtbaslem 21793 ordtrest2lem 21808 hausnei2 21958 cnhaus 21959 regsep2 21981 dishaus 21987 ordthauslem 21988 cmpsublem 22004 cmpsub 22005 nconnsubb 22028 connsubclo 22029 1stcelcls 22066 islly 22073 cldllycmp 22100 lly1stc 22101 locfincmp 22131 elkgen 22141 ptclsg 22220 dfac14lem 22222 txrest 22236 pthaus 22243 txhaus 22252 xkohaus 22258 xkoptsub 22259 regr1lem 22344 isfbas 22434 fbasssin 22441 fbun 22445 isfil 22452 fbunfip 22474 fgval 22475 filconn 22488 uzrest 22502 isufil2 22513 hauspwpwf1 22592 fclsopni 22620 fclsnei 22624 fclsrest 22629 fcfnei 22640 fcfneii 22642 tsmsfbas 22733 ustincl 22813 ustdiag 22814 ustinvel 22815 ustexhalf 22816 ust0 22825 trust 22835 restutopopn 22844 lpbl 23110 methaus 23127 metrest 23131 restmetu 23177 qtopbaslem 23364 qdensere 23375 xrtgioo 23411 metnrmlem3 23466 icoopnst 23544 iocopnst 23545 ovolicc2lem2 24122 ovolicc2lem5 24125 mblsplit 24136 limcnlp 24481 ellimc3 24482 limcflf 24484 limciun 24497 ig1pval 24773 shincl 29164 shmodi 29173 omlsi 29187 pjoml 29219 chm0 29274 chincl 29282 chdmm1 29308 ledi 29323 cmbr 29367 cmbr3 29391 mdbr 30077 dmdmd 30083 dmdi 30085 dmdbr3 30088 dmdbr4 30089 mdslmd1lem4 30111 cvmd 30119 cvexch 30157 dmdbr6ati 30206 mddmdin0i 30214 difeq 30289 ofpreima2 30429 rspectopn 31220 ordtrest2NEWlem 31275 inelsros 31547 diffiunisros 31548 measvuni 31583 measinb 31590 inelcarsg 31679 carsgclctunlem2 31687 totprob 31795 ballotlemgval 31891 cvmscbv 32618 cvmsdisj 32630 cvmsss2 32634 satfv1 32723 nepss 33061 brapply 33512 opnbnd 33786 isfne 33800 tailfb 33838 bj-restsn 34497 bj-restpw 34507 bj-rest0 34508 bj-restb 34509 nlpfvineqsn 34826 fvineqsnf1 34827 pibt2 34834 ptrest 35056 poimirlem30 35087 mblfinlem2 35095 bndss 35224 qsdisjALTV 36010 redundss3 36023 lcvexchlem4 36333 fipjust 40264 ntrkbimka 40741 ntrk0kbimka 40742 clsk3nimkb 40743 isotone2 40752 ntrclskb 40772 ntrclsk3 40773 ntrclsk13 40774 elrestd 41744 islptre 42261 islpcn 42281 subsaliuncllem 42997 subsaliuncl 42998 nnfoctbdjlem 43094 caragensplit 43139 vonvolmbllem 43299 vonvolmbl 43300 incsmflem 43375 decsmflem 43399 smflimlem2 43405 smflimlem3 43406 smflim 43410 smfpimcclem 43438 uzlidlring 44553 rngcvalALTV 44585 rngcval 44586 ringcvalALTV 44631 ringcval 44632 |
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