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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 5513 | . 2 ⊢ (𝐺:𝐴⟶𝐵 → 𝐺 Fn 𝐴) | |
| 2 | fvco2 5751 | . 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 1398 ∈ wcel 2205 ∘ ccom 4758 Fn wfn 5352 ⟶wf 5353 ‘cfv 5357 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-sbc 3046 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-br 4115 df-opab 4177 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-fv 5365 |
| This theorem is referenced by: fvco4 5754 foco2 5932 f1ocnvfv1 5956 f1ocnvfv2 5957 fcof1 5962 fcofo 5963 cocan1 5966 cocan2 5967 isotr 5995 algrflem 6438 algrflemg 6439 difinfsn 7404 ctssdccl 7415 cc3 7598 0tonninf 10826 1tonninf 10827 seqf1oglem2 10906 seqf1og 10907 summodclem3 12091 fsumf1o 12101 fsumcl2lem 12109 fsumadd 12117 fsummulc2 12159 prodmodclem3 12286 fprodf1o 12299 fprodmul 12302 algcvg 12770 eulerthlemth 12954 ennnfonelemnn0 13257 ctinfomlemom 13262 mhmco 13745 gsumfzreidx 14090 gsumfzmhm 14096 gfsumval 14102 gsumshift 14105 gfsump1 14108 mplsubgfileminv 14981 cnptopco 15213 lmtopcnp 15241 upxp 15263 uptx 15265 cnmpt11 15274 cnmpt21 15282 comet 15490 cnmetdval 15520 climcncf 15575 cncfco 15582 limccnpcntop 15666 dvcoapbr 15698 dvcjbr 15699 dvfre 15701 plycjlemc 15751 plycj 15752 isomninnlem 16940 iswomninnlem 16960 ismkvnnlem 16963 |
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