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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 3727 | . 2 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐶)) |
3 | difeq12d.2 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐷) | |
4 | 3 | difeq2d 3728 | . 2 ⊢ (𝜑 → (𝐵 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
5 | 2, 4 | eqtrd 2656 | 1 ⊢ (𝜑 → (𝐴 ∖ 𝐶) = (𝐵 ∖ 𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1483 ∖ cdif 3571 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rab 2921 df-dif 3577 |
This theorem is referenced by: boxcutc 7951 unfilem3 8226 infdifsn 8554 cantnfp1lem3 8577 infcda1 9015 isf32lem6 9180 isf32lem7 9181 isf32lem8 9182 domtriomlem 9264 domtriom 9265 alephsuc3 9402 symgfixelsi 17855 pmtrprfval 17907 dprdf1o 18431 isirred 18699 isdrng 18751 isdrngd 18772 drngpropd 18774 issubdrg 18805 islbs 19076 lbspropd 19099 lssacsex 19144 lspsnat 19145 frlmlbs 20136 islindf 20151 lindfmm 20166 lsslindf 20169 ptcld 21416 iundisj 23316 iundisj2 23317 iunmbl 23321 volsup 23324 dchrval 24959 nbgrval 26234 nbgr1vtx 26254 iundisjf 29402 iundisj2f 29403 iundisjfi 29555 iundisj2fi 29556 qtophaus 29903 zrhunitpreima 30022 meascnbl 30282 brae 30304 braew 30305 ballotlemfrc 30588 reprdifc 30705 chtvalz 30707 csbdif 33171 poimirlem4 33413 poimirlem6 33415 poimirlem7 33416 poimirlem9 33418 poimirlem13 33422 poimirlem14 33423 poimirlem16 33425 poimirlem19 33428 voliunnfl 33453 itg2addnclem 33461 isdivrngo 33749 drngoi 33750 lsatset 34277 watfvalN 35278 mapdpglem26 36987 mapdpglem27 36988 hvmapffval 37047 hvmapfval 37048 hvmap1o2 37054 dssmapfvd 38311 fzdifsuc2 39525 stoweidlem34 40251 subsalsal 40577 iundjiunlem 40676 iundjiun 40677 meaiuninc 40698 carageniuncllem1 40735 carageniuncl 40737 hspdifhsp 40830 |
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