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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 4076 | . 2 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐶)) |
| 3 | difeq12d.2 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 4 | 3 | difeq2d 4077 | . 2 ⊢ (𝜑 → (𝐵 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
| 5 | 2, 4 | eqtrd 2797 | 1 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∖ cdif 3899 |
| 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 2734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-rab 3415 df-dif 3905 |
| This theorem is used by: csbdif 4484 xpord2pred 8147 xpord3pred 8154 boxcutc 8952 unfilem3 9281 infdifsn 9640 cantnfp1lem3 9663 isf32lem6 10364 isf32lem7 10365 isf32lem8 10366 domtriomlem 10448 domtriom 10449 alephsuc3 10593 symgfixelsi 19568 pmtrprfval 19620 dprdf1o 20167 isirred 20566 isdrng 20900 isdrngd 20937 isdrngdOLD 20939 drngpropd 20942 issubdrg 20952 subdrgint 20975 islbs 21266 lbspropd 21289 lssacsex 21337 lspsnat 21338 frlmlbs 22016 islindf 22031 lindfmm 22046 lsslindf 22049 psdmullem 22399 ptcld 23845 iundisj 25782 iundisj2 25783 iunmbl 25787 volsup 25790 dchrval 27478 newval 28108 ltslpss 28181 leslss 28182 nbgrval 29804 nbgr1vtx 29826 iundisjf 33070 iundisj2f 33071 iundisjfi 33275 iundisj2fi 33276 lindfpropd 33823 opprqusdrng 33903 rprmval 33934 isufd 33958 sradrng 34100 qtophaus 34354 zrhunitpreima 34494 meascnbl 34738 brae 34760 braew 34761 ballotlemfrc 35046 reprdifc 35143 chtvalz 35145 onvf1odlem3 35710 satffunlem2lem2 35993 poimirlem4 38381 poimirlem6 38383 poimirlem7 38384 poimirlem9 38386 poimirlem13 38390 poimirlem14 38391 poimirlem16 38393 poimirlem19 38396 voliunnfl 38421 itg2addnclem 38428 isdivrngo 38708 drngoi 38709 lsatset 39871 watfvalN 40873 mapdpglem26 42579 mapdpglem27 42580 hvmapffval 42639 hvmapfval 42640 hvmap1o2 42646 prjspval 43457 prjspnvs 43474 cantnfresb 44173 tfsconcatun 44186 tfsconcat0i 44194 dssmapfvd 44865 fzdifsuc2 46151 stoweidlem34 46870 subsalsal 47195 iundjiunlem 47295 iundjiun 47296 meaiuninc 47317 carageniuncllem1 47357 carageniuncl 47359 hspdifhsp 47452 |
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