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Mirrors > Home > MPE Home > Th. List > coeq2 | Structured version Visualization version GIF version |
Description: Equality theorem for composition of two classes. (Contributed by NM, 3-Jan-1997.) |
Ref | Expression |
---|---|
coeq2 | ⊢ (𝐴 = 𝐵 → (𝐶 ∘ 𝐴) = (𝐶 ∘ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | coss2 5200 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵)) | |
2 | coss2 5200 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → (𝐶 ∘ 𝐵) ⊆ (𝐶 ∘ 𝐴)) | |
3 | 1, 2 | anim12i 588 | . 2 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴) → ((𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵) ∧ (𝐶 ∘ 𝐵) ⊆ (𝐶 ∘ 𝐴))) |
4 | eqss 3583 | . 2 ⊢ (𝐴 = 𝐵 ↔ (𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴)) | |
5 | eqss 3583 | . 2 ⊢ ((𝐶 ∘ 𝐴) = (𝐶 ∘ 𝐵) ↔ ((𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵) ∧ (𝐶 ∘ 𝐵) ⊆ (𝐶 ∘ 𝐴))) | |
6 | 3, 4, 5 | 3imtr4i 280 | 1 ⊢ (𝐴 = 𝐵 → (𝐶 ∘ 𝐴) = (𝐶 ∘ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 = wceq 1475 ⊆ wss 3540 ∘ ccom 5042 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-in 3547 df-ss 3554 df-br 4584 df-opab 4644 df-co 5047 |
This theorem is referenced by: coeq2i 5204 coeq2d 5206 coi2 5569 relcnvtr 5572 f1eqcocnv 6456 ereq1 7636 seqf1olem2 12703 seqf1o 12704 relexpsucnnr 13613 isps 17025 pwsco2mhm 17194 gsumwmhm 17205 frmdgsum 17222 frmdup1 17224 frmdup2 17225 symgov 17633 pmtr3ncom 17718 psgnunilem1 17736 frgpuplem 18008 frgpupf 18009 frgpupval 18010 gsumval3eu 18128 gsumval3lem2 18130 kgencn2 21170 upxp 21236 uptx 21238 txcn 21239 xkococnlem 21272 xkococn 21273 cnmptk1 21294 cnmptkk 21296 xkofvcn 21297 imasdsf1olem 21988 pi1cof 22667 pi1coval 22668 elovolmr 23051 ovoliunlem3 23079 ismbf1 23199 motplusg 25237 hocsubdir 28028 hoddi 28233 lnopco0i 28247 opsqrlem1 28383 pjsdi2i 28400 pjin2i 28436 pjclem1 28438 symgfcoeu 29176 eulerpartgbij 29761 cvmliftmo 30520 cvmliftlem14 30533 cvmliftiota 30537 cvmlift2lem13 30551 cvmlift2 30552 cvmliftphtlem 30553 cvmlift3lem2 30556 cvmlift3lem6 30560 cvmlift3lem7 30561 cvmlift3lem9 30563 cvmlift3 30564 msubco 30682 ftc1anclem8 32662 upixp 32694 trlcoat 35029 trljco 35046 tgrpov 35054 tendovalco 35071 erngmul 35112 erngmul-rN 35120 dvamulr 35318 dvavadd 35321 dvhmulr 35393 dihjatcclem4 35728 mendmulr 36777 hoiprodcl2 39445 ovnlecvr 39448 ovncvrrp 39454 ovnsubaddlem2 39461 ovncvr2 39501 opnvonmbllem1 39522 opnvonmbl 39524 ovolval4lem2 39540 ovolval5lem2 39543 ovolval5lem3 39544 ovolval5 39545 ovnovollem2 39547 rngcinv 41773 rngcinvALTV 41785 ringcinv 41824 ringcinvALTV 41848 |
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