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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 5730 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∘ 𝐴) ⊆ (𝐶 ∘ 𝐵)) | |
2 | coss2 5730 | . . 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 3985 | . 2 ⊢ (𝐴 = 𝐵 ↔ (𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴)) | |
5 | eqss 3985 | . 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 1536 ⊆ wss 3939 ∘ ccom 5562 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-in 3946 df-ss 3955 df-br 5070 df-opab 5132 df-co 5567 |
This theorem is referenced by: coeq2i 5734 coeq2d 5736 coi2 6119 f1eqcocnv 7060 ereq1 8299 seqf1olem2 13413 seqf1o 13414 relexpsucnnr 14387 isps 17815 pwsco2mhm 18000 gsumwmhm 18013 frmdgsum 18030 frmdup1 18032 frmdup2 18033 efmndov 18049 symggrplem 18052 smndex1mndlem 18077 smndex1mnd 18078 pmtr3ncom 18606 psgnunilem1 18624 frgpuplem 18901 frgpupf 18902 frgpupval 18903 gsumval3eu 19027 gsumval3lem2 19029 selvval 20334 kgencn2 22168 upxp 22234 uptx 22236 txcn 22237 xkococnlem 22270 xkococn 22271 cnmptk1 22292 cnmptkk 22294 xkofvcn 22295 imasdsf1olem 22986 pi1cof 23666 pi1coval 23667 elovolmr 24080 ovoliunlem3 24108 ismbf1 24228 motplusg 26331 hocsubdir 29565 hoddi 29770 lnopco0i 29784 opsqrlem1 29920 pjsdi2i 29937 pjin2i 29973 pjclem1 29975 symgfcoeu 30730 eulerpartgbij 31634 cvmliftmo 32535 cvmliftlem14 32548 cvmliftiota 32552 cvmlift2lem13 32566 cvmlift2 32567 cvmliftphtlem 32568 cvmlift3lem2 32571 cvmlift3lem6 32575 cvmlift3lem7 32576 cvmlift3lem9 32578 cvmlift3 32579 msubco 32782 ftc1anclem8 34978 upixp 35008 coideq 35511 xrneq1 35633 xrneq2 35636 trlcoat 37863 trljco 37880 tgrpov 37888 tendovalco 37905 erngmul 37946 erngmul-rN 37954 dvamulr 38152 dvavadd 38155 dvhmulr 38226 dihjatcclem4 38561 mendmulr 39794 hoiprodcl2 42844 ovnlecvr 42847 ovncvrrp 42853 ovnsubaddlem2 42860 ovncvr2 42900 opnvonmbllem1 42921 opnvonmbl 42923 ovolval4lem2 42939 ovolval5lem2 42942 ovolval5lem3 42943 ovolval5 42944 ovnovollem2 42946 rngcinv 44259 rngcinvALTV 44271 ringcinv 44310 ringcinvALTV 44334 |
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