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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 4062 | . 2 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐶)) |
| 3 | difeq12d.2 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 4 | 3 | difeq2d 4063 | . 2 ⊢ (𝜑 → (𝐵 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
| 5 | 2, 4 | eqtrd 2795 | 1 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∖ cdif 4045 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-dif 4047 |
| This theorem is used by: csbdif 4480 xpord2pred 8164 xpord3pred 8171 boxcutc 8972 unfilem3 9302 infdifsn 9661 cantnfp1lem3 9684 isf32lem6 10439 isf32lem7 10440 isf32lem8 10441 domtriomlem 10523 domtriom 10524 alephsuc3 10668 symgfixelsi 19654 pmtrprfval 19706 dprdf1o 20253 isirred 20654 isdrng 20989 isdrngd 21027 isdrngdOLD 21029 drngpropd 21032 issubdrg 21042 subdrgint 21065 islbs 21356 lbspropd 21379 lssacsex 21427 lspsnat 21428 frlmlbs 22108 islindf 22123 lindfmm 22138 lsslindf 22141 psdmullem 22491 ptcld 23937 iundisj 25874 iundisj2 25875 iunmbl 25879 volsup 25882 dchrval 27566 newval 28226 ltslpss 28299 leslss 28300 nbgrval 29922 nbgr1vtx 29944 iundisjf 33230 iundisj2f 33231 iundisjfi 33434 iundisj2fi 33435 lindfpropd 33983 opprqusdrng 34063 rprmval 34094 isufd 34118 sradrng 34260 qtophaus 34514 zrhunitpreima 34654 meascnbl 34898 brae 34920 braew 34921 ballotlemfrc 35205 reprdifc 35302 chtvalz 35304 onvf1odlem3 35952 satffunlem2lem2 36257 poimirlem4 38635 poimirlem6 38637 poimirlem7 38638 poimirlem9 38640 poimirlem13 38644 poimirlem14 38645 poimirlem16 38647 poimirlem19 38650 voliunnfl 38675 itg2addnclem 38682 isdivrngo 38977 drngoi 38978 lsatset 40140 watfvalN 41142 mapdpglem26 42848 mapdpglem27 42849 hvmapffval 42908 hvmapfval 42909 hvmap1o2 42915 prjspval 43724 prjspnvs 43741 cantnfresb 44419 tfsconcatun 44432 tfsconcat0i 44440 dssmapfvd 45110 fzdifsuc2 46419 stoweidlem34 47137 subsalsal 47462 iundjiunlem 47562 iundjiun 47563 meaiuninc 47584 carageniuncllem1 47624 carageniuncl 47626 hspdifhsp 47719 |
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