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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 4073 | . 2 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐶)) |
| 3 | difeq12d.2 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 4 | 3 | difeq2d 4074 | . 2 ⊢ (𝜑 → (𝐵 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
| 5 | 2, 4 | eqtrd 2796 | 1 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∖ cdif 3896 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 df-rab 3414 df-dif 3902 |
| This theorem is used by: csbdif 4481 xpord2pred 8146 xpord3pred 8153 boxcutc 8953 unfilem3 9283 infdifsn 9642 cantnfp1lem3 9665 isf32lem6 10417 isf32lem7 10418 isf32lem8 10419 domtriomlem 10501 domtriom 10502 alephsuc3 10646 symgfixelsi 19629 pmtrprfval 19681 dprdf1o 20228 isirred 20629 isdrng 20964 isdrngd 21002 isdrngdOLD 21004 drngpropd 21007 issubdrg 21017 subdrgint 21040 islbs 21331 lbspropd 21354 lssacsex 21402 lspsnat 21403 frlmlbs 22083 islindf 22098 lindfmm 22113 lsslindf 22116 psdmullem 22466 ptcld 23912 iundisj 25849 iundisj2 25850 iunmbl 25854 volsup 25857 dchrval 27543 newval 28203 ltslpss 28276 leslss 28277 nbgrval 29899 nbgr1vtx 29921 iundisjf 33165 iundisj2f 33166 iundisjfi 33370 iundisj2fi 33371 lindfpropd 33919 opprqusdrng 33999 rprmval 34030 isufd 34054 sradrng 34196 qtophaus 34450 zrhunitpreima 34590 meascnbl 34834 brae 34856 braew 34857 ballotlemfrc 35142 reprdifc 35239 chtvalz 35241 onvf1odlem3 35857 satffunlem2lem2 36140 poimirlem4 38510 poimirlem6 38512 poimirlem7 38513 poimirlem9 38515 poimirlem13 38519 poimirlem14 38520 poimirlem16 38522 poimirlem19 38525 voliunnfl 38550 itg2addnclem 38557 isdivrngo 38852 drngoi 38853 lsatset 40015 watfvalN 41017 mapdpglem26 42723 mapdpglem27 42724 hvmapffval 42783 hvmapfval 42784 hvmap1o2 42790 prjspval 43593 prjspnvs 43610 cantnfresb 44284 tfsconcatun 44297 tfsconcat0i 44305 dssmapfvd 44976 fzdifsuc2 46269 stoweidlem34 46988 subsalsal 47313 iundjiunlem 47413 iundjiun 47414 meaiuninc 47435 carageniuncllem1 47475 carageniuncl 47477 hspdifhsp 47570 |
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