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| Mirrors > Home > MPE Home > Th. List > difeq12d | Structured version Visualization version GIF version | ||
| Description: Equality deduction for class difference. (Contributed by FL, 29-May-2014.) |
| Ref | Expression |
|---|---|
| difeq12d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| difeq12d.2 | ⊢ (𝜑 → 𝐶 = 𝐷) |
| Ref | Expression |
|---|---|
| difeq12d | ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | difeq12d.1 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | 1 | difeq1d 4065 | . 2 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐶)) |
| 3 | difeq12d.2 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 4 | 3 | difeq2d 4066 | . 2 ⊢ (𝜑 → (𝐵 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
| 5 | 2, 4 | eqtrd 2798 | 1 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∖ cdif 4048 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-rab 3417 df-dif 4050 |
| This theorem is used by: csbdif 4484 xpord2pred 8192 xpord3pred 8199 boxcutc 9000 unfilem3 9330 infdifsn 9688 cantnfp1lem3 9711 isf32lem6 10466 isf32lem7 10467 isf32lem8 10468 domtriomlem 10550 domtriom 10551 alephsuc3 10695 symgfixelsi 19682 pmtrprfval 19734 dprdf1o 20281 isirred 20682 isdrng 21017 isdrngd 21055 isdrngdOLD 21057 drngpropd 21060 issubdrg 21070 subdrgint 21093 islbs 21384 lbspropd 21407 lssacsex 21455 lspsnat 21456 frlmlbs 22136 islindf 22151 lindfmm 22166 lsslindf 22169 psdmullem 22519 ptcld 23965 iundisj 25902 iundisj2 25903 iunmbl 25907 volsup 25910 dchrval 27594 newval 28254 ltslpss 28327 leslss 28328 nbgrval 29950 nbgr1vtx 29972 iundisjf 33258 iundisj2f 33259 iundisjfi 33461 iundisj2fi 33462 lindfpropd 34021 opprqusdrng 34101 rprmval 34132 isufd 34156 sradrng 34297 qtophaus 34551 zrhunitpreima 34691 meascnbl 34935 brae 34957 braew 34958 ballotlemfrc 35242 reprdifc 35339 chtvalz 35341 onvf1odlem3 36046 satffunlem2lem2 36351 poimirlem4 38747 poimirlem6 38749 poimirlem7 38750 poimirlem9 38752 poimirlem13 38756 poimirlem14 38757 poimirlem16 38759 poimirlem19 38762 voliunnfl 38787 itg2addnclem 38794 isdivrngo 39087 drngoi 39088 lsatset 40250 watfvalN 41252 mapdpglem26 42958 mapdpglem27 42959 hvmapffval 43018 hvmapfval 43019 hvmap1o2 43025 prjspval 43835 prjspnvs 43852 cantnfresb 44529 tfsconcatun 44542 tfsconcat0i 44550 dssmapfvd 45220 fzdifsuc2 46541 stoweidlem34 47259 subsalsal 47584 iundjiunlem 47684 iundjiun 47685 meaiuninc 47706 carageniuncllem1 47746 carageniuncl 47748 hspdifhsp 47841 |
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