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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 3842 | . 2 ⊢ ((𝐴 = 𝐵 ∧ 𝐶 = 𝐷) → (𝐴 ∩ 𝐶) = (𝐵 ∩ 𝐷)) | |
4 | 1, 2, 3 | syl2anc 694 | 1 ⊢ (𝜑 → (𝐴 ∩ 𝐶) = (𝐵 ∩ 𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1523 ∩ cin 3606 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1762 ax-4 1777 ax-5 1879 ax-6 1945 ax-7 1981 ax-9 2039 ax-10 2059 ax-11 2074 ax-12 2087 ax-13 2282 ax-ext 2631 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-tru 1526 df-ex 1745 df-nf 1750 df-sb 1938 df-clab 2638 df-cleq 2644 df-clel 2647 df-nfc 2782 df-v 3233 df-in 3614 |
This theorem is referenced by: csbin 4043 predeq123 5719 funprgOLD 5979 funtpgOLD 5981 funcnvtp 5989 offval 6946 ofrfval 6947 oev2 7648 isf32lem7 9219 ressval 15974 invffval 16465 invfval 16466 dfiso2 16479 isofn 16482 oppcinv 16487 zerooval 16696 isps 17249 dmdprd 18443 dprddisj 18454 dprdf1o 18477 dmdprdsplit2lem 18490 dmdprdpr 18494 pgpfaclem1 18526 isunit 18703 dfrhm2 18765 isrhm 18769 2idlval 19281 aspval 19376 ressmplbas2 19503 pjfval 20098 isconn 21264 connsuba 21271 ptbasin 21428 ptclsg 21466 qtopval 21546 rnelfmlem 21803 trust 22080 isnmhm 22597 uniioombllem2a 23396 dyaddisjlem 23409 dyaddisj 23410 i1faddlem 23505 i1fmullem 23506 limcflf 23690 ewlksfval 26553 isewlk 26554 ewlkinedg 26556 ispth 26675 trlsegvdeg 27205 frcond3 27249 numclwwlk3lem 27371 chocin 28482 cmbr3 28595 pjoml3 28599 fh1 28605 fnunres1 29543 xppreima2 29578 hauseqcn 30069 prsssdm 30091 ordtrestNEW 30095 ordtrest2NEW 30097 cndprobval 30623 ballotlemfrc 30716 bnj1421 31236 msrval 31561 msrf 31565 ismfs 31572 clsun 32448 poimirlem8 33547 itg2addnclem2 33592 heiborlem4 33743 heiborlem6 33745 heiborlem10 33749 pmodl42N 35455 polfvalN 35508 poldmj1N 35532 pmapj2N 35533 pnonsingN 35537 psubclinN 35552 poml4N 35557 osumcllem9N 35568 trnfsetN 35760 diainN 36663 djaffvalN 36739 djafvalN 36740 djajN 36743 dihmeetcl 36951 dihmeet2 36952 dochnoncon 36997 djhffval 37002 djhfval 37003 djhlj 37007 dochdmm1 37016 lclkrlem2g 37119 lclkrlem2v 37134 lcfrlem21 37169 lcfrlem24 37172 mapdunirnN 37256 baerlem5amN 37322 baerlem5bmN 37323 baerlem5abmN 37324 mapdheq4lem 37337 mapdh6lem1N 37339 mapdh6lem2N 37340 hdmap1l6lem1 37414 hdmap1l6lem2 37415 aomclem8 37948 csbingOLD 39369 disjrnmpt2 39689 dvsinax 40445 dvcosax 40459 nnfoctbdjlem 40990 smfpimcc 41335 smfsuplem2 41339 rhmval 42244 |
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