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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 5710 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵)) | |
2 | coss2 5710 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → (𝐶 ∘ 𝐵) ⊆ (𝐶 ∘ 𝐴)) | |
3 | 1, 2 | anim12i 616 | . 2 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴) → ((𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵) ∧ (𝐶 ∘ 𝐵) ⊆ (𝐶 ∘ 𝐴))) |
4 | eqss 3902 | . 2 ⊢ (𝐴 = 𝐵 ↔ (𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴)) | |
5 | eqss 3902 | . 2 ⊢ ((𝐶 ∘ 𝐴) = (𝐶 ∘ 𝐵) ↔ ((𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵) ∧ (𝐶 ∘ 𝐵) ⊆ (𝐶 ∘ 𝐴))) | |
6 | 3, 4, 5 | 3imtr4i 295 | 1 ⊢ (𝐴 = 𝐵 → (𝐶 ∘ 𝐴) = (𝐶 ∘ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1543 ⊆ wss 3853 ∘ ccom 5540 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-ext 2708 |
This theorem depends on definitions: df-bi 210 df-an 400 df-tru 1546 df-ex 1788 df-sb 2073 df-clab 2715 df-cleq 2728 df-clel 2809 df-v 3400 df-in 3860 df-ss 3870 df-br 5040 df-opab 5102 df-co 5545 |
This theorem is referenced by: coeq2i 5714 coeq2d 5716 coi2 6107 f1eqcocnv 7089 f1eqcocnvOLD 7090 ereq1 8376 seqf1olem2 13581 seqf1o 13582 relexpsucnnr 14553 isps 18028 pwsco2mhm 18213 gsumwmhm 18226 frmdgsum 18243 frmdup1 18245 frmdup2 18246 efmndov 18262 symggrplem 18265 smndex1mndlem 18290 smndex1mnd 18291 pmtr3ncom 18821 psgnunilem1 18839 frgpuplem 19116 frgpupf 19117 frgpupval 19118 gsumval3eu 19243 gsumval3lem2 19245 selvval 21032 kgencn2 22408 upxp 22474 uptx 22476 txcn 22477 xkococnlem 22510 xkococn 22511 cnmptk1 22532 cnmptkk 22534 xkofvcn 22535 imasdsf1olem 23225 pi1cof 23910 pi1coval 23911 elovolmr 24327 ovoliunlem3 24355 ismbf1 24475 motplusg 26587 hocsubdir 29820 hoddi 30025 lnopco0i 30039 opsqrlem1 30175 pjsdi2i 30192 pjin2i 30228 pjclem1 30230 symgfcoeu 31024 eulerpartgbij 32005 cvmliftmo 32913 cvmliftlem14 32926 cvmliftiota 32930 cvmlift2lem13 32944 cvmlift2 32945 cvmliftphtlem 32946 cvmlift3lem2 32949 cvmlift3lem6 32953 cvmlift3lem7 32954 cvmlift3lem9 32956 cvmlift3 32957 msubco 33160 ftc1anclem8 35543 upixp 35573 coideq 36071 xrneq1 36193 xrneq2 36196 trlcoat 38423 trljco 38440 tgrpov 38448 tendovalco 38465 erngmul 38506 erngmul-rN 38514 dvamulr 38712 dvavadd 38715 dvhmulr 38786 dihjatcclem4 39121 mendmulr 40657 hoiprodcl2 43711 ovnlecvr 43714 ovncvrrp 43720 ovnsubaddlem2 43727 ovncvr2 43767 opnvonmbllem1 43788 opnvonmbl 43790 ovolval4lem2 43806 ovolval5lem2 43809 ovolval5lem3 43810 ovolval5 43811 ovnovollem2 43813 rngcinv 45155 rngcinvALTV 45167 ringcinv 45206 ringcinvALTV 45230 itcoval1 45625 itcoval2 45626 itcoval3 45627 itcovalsucov 45630 |
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