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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 5727 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵)) | |
2 | coss2 5727 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → (𝐶 ∘ 𝐵) ⊆ (𝐶 ∘ 𝐴)) | |
3 | 1, 2 | anim12i 614 | . 2 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴) → ((𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵) ∧ (𝐶 ∘ 𝐵) ⊆ (𝐶 ∘ 𝐴))) |
4 | eqss 3982 | . 2 ⊢ (𝐴 = 𝐵 ↔ (𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴)) | |
5 | eqss 3982 | . 2 ⊢ ((𝐶 ∘ 𝐴) = (𝐶 ∘ 𝐵) ↔ ((𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵) ∧ (𝐶 ∘ 𝐵) ⊆ (𝐶 ∘ 𝐴))) | |
6 | 3, 4, 5 | 3imtr4i 294 | 1 ⊢ (𝐴 = 𝐵 → (𝐶 ∘ 𝐴) = (𝐶 ∘ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1537 ⊆ wss 3936 ∘ ccom 5559 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-in 3943 df-ss 3952 df-br 5067 df-opab 5129 df-co 5564 |
This theorem is referenced by: coeq2i 5731 coeq2d 5733 coi2 6116 f1eqcocnv 7057 ereq1 8296 seqf1olem2 13411 seqf1o 13412 relexpsucnnr 14384 isps 17812 pwsco2mhm 17997 gsumwmhm 18010 frmdgsum 18027 frmdup1 18029 frmdup2 18030 efmndov 18046 symggrplem 18049 smndex1mndlem 18074 smndex1mnd 18075 pmtr3ncom 18603 psgnunilem1 18621 frgpuplem 18898 frgpupf 18899 frgpupval 18900 gsumval3eu 19024 gsumval3lem2 19026 selvval 20331 kgencn2 22165 upxp 22231 uptx 22233 txcn 22234 xkococnlem 22267 xkococn 22268 cnmptk1 22289 cnmptkk 22291 xkofvcn 22292 imasdsf1olem 22983 pi1cof 23663 pi1coval 23664 elovolmr 24077 ovoliunlem3 24105 ismbf1 24225 motplusg 26328 hocsubdir 29562 hoddi 29767 lnopco0i 29781 opsqrlem1 29917 pjsdi2i 29934 pjin2i 29970 pjclem1 29972 symgfcoeu 30726 eulerpartgbij 31630 cvmliftmo 32531 cvmliftlem14 32544 cvmliftiota 32548 cvmlift2lem13 32562 cvmlift2 32563 cvmliftphtlem 32564 cvmlift3lem2 32567 cvmlift3lem6 32571 cvmlift3lem7 32572 cvmlift3lem9 32574 cvmlift3 32575 msubco 32778 ftc1anclem8 34989 upixp 35019 coideq 35522 xrneq1 35644 xrneq2 35647 trlcoat 37874 trljco 37891 tgrpov 37899 tendovalco 37916 erngmul 37957 erngmul-rN 37965 dvamulr 38163 dvavadd 38166 dvhmulr 38237 dihjatcclem4 38572 mendmulr 39808 hoiprodcl2 42857 ovnlecvr 42860 ovncvrrp 42866 ovnsubaddlem2 42873 ovncvr2 42913 opnvonmbllem1 42934 opnvonmbl 42936 ovolval4lem2 42952 ovolval5lem2 42955 ovolval5lem3 42956 ovolval5 42957 ovnovollem2 42959 rngcinv 44272 rngcinvALTV 44284 ringcinv 44323 ringcinvALTV 44347 |
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