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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 3483 | . 2 ⊢ (𝐴 = 𝐵 → {𝑥 ∈ 𝐴 ∣ 𝑥 ∈ 𝐶} = {𝑥 ∈ 𝐵 ∣ 𝑥 ∈ 𝐶}) | |
2 | dfin5 3944 | . 2 ⊢ (𝐴 ∩ 𝐶) = {𝑥 ∈ 𝐴 ∣ 𝑥 ∈ 𝐶} | |
3 | dfin5 3944 | . 2 ⊢ (𝐵 ∩ 𝐶) = {𝑥 ∈ 𝐵 ∣ 𝑥 ∈ 𝐶} | |
4 | 1, 2, 3 | 3eqtr4g 2881 | 1 ⊢ (𝐴 = 𝐵 → (𝐴 ∩ 𝐶) = (𝐵 ∩ 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∈ wcel 2114 {crab 3142 ∩ cin 3935 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1781 df-sb 2070 df-clab 2800 df-cleq 2814 df-clel 2893 df-rab 3147 df-in 3943 |
This theorem is referenced by: ineq2 4183 ineq12 4184 ineq1i 4185 ineq1d 4188 unineq 4254 dfrab3ss 4281 disjeq0 4405 intprg 4910 inex1g 5223 reseq1 5847 sspred 6156 isofrlem 7093 qsdisj 8374 fiint 8795 elfiun 8894 dffi3 8895 inf3lema 9087 dfac5lem5 9553 kmlem12 9587 kmlem14 9589 fin23lem24 9744 fin23lem26 9747 fin23lem23 9748 fin23lem22 9749 fin23lem27 9750 ingru 10237 uzin2 14704 incexclem 15191 elrestr 16702 firest 16706 inopn 21507 isbasisg 21555 basis1 21558 basis2 21559 tgval 21563 fctop 21612 cctop 21614 ntrfval 21632 elcls 21681 clsndisj 21683 elcls3 21691 neindisj2 21731 tgrest 21767 restco 21772 restsn 21778 restcld 21780 restcldi 21781 restopnb 21783 neitr 21788 restcls 21789 ordtbaslem 21796 ordtrest2lem 21811 hausnei2 21961 cnhaus 21962 regsep2 21984 dishaus 21990 ordthauslem 21991 cmpsublem 22007 cmpsub 22008 nconnsubb 22031 connsubclo 22032 1stcelcls 22069 islly 22076 cldllycmp 22103 lly1stc 22104 locfincmp 22134 elkgen 22144 ptclsg 22223 dfac14lem 22225 txrest 22239 pthaus 22246 txhaus 22255 xkohaus 22261 xkoptsub 22262 regr1lem 22347 isfbas 22437 fbasssin 22444 fbun 22448 isfil 22455 fbunfip 22477 fgval 22478 filconn 22491 uzrest 22505 isufil2 22516 hauspwpwf1 22595 fclsopni 22623 fclsnei 22627 fclsrest 22632 fcfnei 22643 fcfneii 22645 tsmsfbas 22736 ustincl 22816 ustdiag 22817 ustinvel 22818 ustexhalf 22819 ust0 22828 trust 22838 restutopopn 22847 lpbl 23113 methaus 23130 metrest 23134 restmetu 23180 qtopbaslem 23367 qdensere 23378 xrtgioo 23414 metnrmlem3 23469 icoopnst 23543 iocopnst 23544 ovolicc2lem2 24119 ovolicc2lem5 24122 mblsplit 24133 limcnlp 24476 ellimc3 24477 limcflf 24479 limciun 24492 ig1pval 24766 shincl 29158 shmodi 29167 omlsi 29181 pjoml 29213 chm0 29268 chincl 29276 chdmm1 29302 ledi 29317 cmbr 29361 cmbr3 29385 mdbr 30071 dmdmd 30077 dmdi 30079 dmdbr3 30082 dmdbr4 30083 mdslmd1lem4 30105 cvmd 30113 cvexch 30151 dmdbr6ati 30200 mddmdin0i 30208 difeq 30280 ofpreima2 30411 ordtrest2NEWlem 31165 inelsros 31437 diffiunisros 31438 measvuni 31473 measinb 31480 inelcarsg 31569 carsgclctunlem2 31577 totprob 31685 ballotlemgval 31781 cvmscbv 32505 cvmsdisj 32517 cvmsss2 32521 satfv1 32610 nepss 32948 brapply 33399 opnbnd 33673 isfne 33687 tailfb 33725 bj-restsn 34376 bj-restpw 34386 bj-rest0 34387 bj-restb 34388 nlpfvineqsn 34693 fvineqsnf1 34694 pibt2 34701 ptrest 34906 poimirlem30 34937 mblfinlem2 34945 bndss 35079 qsdisjALTV 35865 redundss3 35878 lcvexchlem4 36188 fipjust 39944 ntrkbimka 40408 ntrk0kbimka 40409 clsk3nimkb 40410 isotone2 40419 ntrclskb 40439 ntrclsk3 40440 ntrclsk13 40441 elrestd 41394 islptre 41920 islpcn 41940 subsaliuncllem 42660 subsaliuncl 42661 nnfoctbdjlem 42757 caragensplit 42802 vonvolmbllem 42962 vonvolmbl 42963 incsmflem 43038 decsmflem 43062 smflimlem2 43068 smflimlem3 43069 smflim 43073 smfpimcclem 43101 uzlidlring 44220 rngcvalALTV 44252 rngcval 44253 ringcvalALTV 44298 ringcval 44299 |
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