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| Mirrors > Home > ILE Home > Th. List > fvco3 | GIF version | ||
| Description: Value of a function composition. (Contributed by NM, 3-Jan-2004.) (Revised by Mario Carneiro, 26-Dec-2014.) |
| Ref | Expression |
|---|---|
| fvco3 | ⊢ ((𝐺:𝐴⟶𝐵 ∧ 𝐶 ∈ 𝐴) → ((𝐹 ∘ 𝐺)‘𝐶) = (𝐹‘(𝐺‘𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ffn 5482 | . 2 ⊢ (𝐺:𝐴⟶𝐵 → 𝐺 Fn 𝐴) | |
| 2 | fvco2 5715 | . 2 ⊢ ((𝐺 Fn 𝐴 ∧ 𝐶 ∈ 𝐴) → ((𝐹 ∘ 𝐺)‘𝐶) = (𝐹‘(𝐺‘𝐶))) | |
| 3 | 1, 2 | sylan 283 | 1 ⊢ ((𝐺:𝐴⟶𝐵 ∧ 𝐶 ∈ 𝐴) → ((𝐹 ∘ 𝐺)‘𝐶) = (𝐹‘(𝐺‘𝐶))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1397 ∈ wcel 2202 ∘ ccom 4729 Fn wfn 5321 ⟶wf 5322 ‘cfv 5326 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-sbc 3032 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-opab 4151 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-fv 5334 |
| This theorem is referenced by: fvco4 5718 foco2 5894 f1ocnvfv1 5918 f1ocnvfv2 5919 fcof1 5924 fcofo 5925 cocan1 5928 cocan2 5929 isotr 5957 algrflem 6394 algrflemg 6395 difinfsn 7299 ctssdccl 7310 cc3 7487 0tonninf 10703 1tonninf 10704 seqf1oglem2 10783 seqf1og 10784 summodclem3 11959 fsumf1o 11969 fsumcl2lem 11977 fsumadd 11985 fsummulc2 12027 prodmodclem3 12154 fprodf1o 12167 fprodmul 12170 algcvg 12638 eulerthlemth 12822 ennnfonelemnn0 13061 ctinfomlemom 13066 mhmco 13591 gsumfzreidx 13942 gsumfzmhm 13948 mplsubgfileminv 14733 cnptopco 14965 lmtopcnp 14993 upxp 15015 uptx 15017 cnmpt11 15026 cnmpt21 15034 comet 15242 cnmetdval 15272 climcncf 15327 cncfco 15334 limccnpcntop 15418 dvcoapbr 15450 dvcjbr 15451 dvfre 15453 plycjlemc 15503 plycj 15504 isomninnlem 16685 iswomninnlem 16705 ismkvnnlem 16708 gfsumval 16732 gsumgfsumlem 16735 gfsump1 16738 |
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