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Mirrors > Home > MPE Home > Th. List > ineq12d | Structured version Visualization version GIF version |
Description: Equality deduction for intersection of two classes. (Contributed by NM, 24-Jun-2004.) (Proof shortened by Andrew Salmon, 26-Jun-2011.) |
Ref | Expression |
---|---|
ineq1d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
ineq12d.2 | ⊢ (𝜑 → 𝐶 = 𝐷) |
Ref | Expression |
---|---|
ineq12d | ⊢ (𝜑 → (𝐴 ∩ 𝐶) = (𝐵 ∩ 𝐷)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ineq1d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
2 | ineq12d.2 | . 2 ⊢ (𝜑 → 𝐶 = 𝐷) | |
3 | ineq12 4186 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 ∩ 𝐶) = (𝐵 ∩ 𝐷)) | |
4 | 1, 2, 3 | syl2anc 586 | 1 ⊢ (𝜑 → (𝐴 ∩ 𝐶) = (𝐵 ∩ 𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∩ cin 3937 |
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 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-tru 1540 df-ex 1781 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-rab 3149 df-in 3945 |
This theorem is referenced by: csbin 4393 predeq123 6151 funcnvtp 6419 offval 7418 ofrfval 7419 oev2 8150 isf32lem7 9783 ressval 16553 invffval 17030 invfval 17031 dfiso2 17044 isofn 17047 oppcinv 17052 zerooval 17261 isps 17814 dmdprd 19122 dprddisj 19133 dprdf1o 19156 dmdprdsplit2lem 19169 dmdprdpr 19173 pgpfaclem1 19205 isunit 19409 dfrhm2 19471 isrhm 19475 2idlval 20008 aspval 20104 ressmplbas2 20238 pjfval 20852 isconn 22023 connsuba 22030 ptbasin 22187 ptclsg 22225 qtopval 22305 rnelfmlem 22562 trust 22840 isnmhm 23357 uniioombllem2a 24185 dyaddisjlem 24198 dyaddisj 24199 i1faddlem 24296 i1fmullem 24297 limcflf 24481 ewlksfval 27385 isewlk 27386 ewlkinedg 27388 ispth 27506 trlsegvdeg 28008 frcond3 28050 numclwwlk3lem2 28165 chocin 29274 cmbr3 29387 pjoml3 29391 fh1 29397 fnunres1 30358 xppreima2 30397 cosnopne 30432 swrdrndisj 30633 hauseqcn 31140 prsssdm 31162 ordtrestNEW 31166 ordtrest2NEW 31168 cndprobval 31693 ballotlemfrc 31786 bnj1421 32316 satffunlem 32650 satffunlem1lem2 32652 satffunlem2lem1 32653 satffunlem2lem2 32655 msrval 32787 msrf 32791 ismfs 32798 clsun 33678 poimirlem8 34902 itg2addnclem2 34946 heiborlem4 35094 heiborlem6 35096 heiborlem10 35100 pmodl42N 36989 polfvalN 37042 poldmj1N 37066 pmapj2N 37067 pnonsingN 37071 psubclinN 37086 poml4N 37091 osumcllem9N 37102 trnfsetN 37293 diainN 38195 djaffvalN 38271 djafvalN 38272 djajN 38275 dihmeetcl 38483 dihmeet2 38484 dochnoncon 38529 djhffval 38534 djhfval 38535 djhlj 38539 dochdmm1 38548 lclkrlem2g 38651 lclkrlem2v 38666 lcfrlem21 38701 lcfrlem24 38704 mapdunirnN 38788 baerlem5amN 38854 baerlem5bmN 38855 baerlem5abmN 38856 mapdheq4lem 38869 mapdh6lem1N 38871 mapdh6lem2N 38872 hdmap1l6lem1 38945 hdmap1l6lem2 38946 aomclem8 39668 disjrnmpt2 41456 dvsinax 42204 dvcosax 42218 nnfoctbdjlem 42744 smfpimcc 43089 smfsuplem2 43093 rhmval 44197 |
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