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| Mirrors > Home > MPE Home > Th. List > fcod | Structured version Visualization version GIF version | ||
| Description: Composition of two mappings. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
| Ref | Expression |
|---|---|
| fcod.1 | ⊢ (𝜑 → 𝐹:𝐵⟶𝐶) |
| fcod.2 | ⊢ (𝜑 → 𝐺:𝐴⟶𝐵) |
| Ref | Expression |
|---|---|
| fcod | ⊢ (𝜑 → (𝐹 ∘ 𝐺):𝐴⟶𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fcod.1 | . 2 ⊢ (𝜑 → 𝐹:𝐵⟶𝐶) | |
| 2 | fcod.2 | . 2 ⊢ (𝜑 → 𝐺:𝐴⟶𝐵) | |
| 3 | fco 6686 | . 2 ⊢ ((𝐹:𝐵⟶𝐶 ∧ 𝐺:𝐴⟶𝐵) → (𝐹 ∘ 𝐺):𝐴⟶𝐶) | |
| 4 | 1, 2, 3 | syl2anc 584 | 1 ⊢ (𝜑 → (𝐹 ∘ 𝐺):𝐴⟶𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∘ ccom 5628 ⟶wf 6488 |
| 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 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-fun 6494 df-fn 6495 df-f 6496 |
| This theorem is referenced by: suppcoss 8149 mapen 9069 mapfienlem3 9310 mapfien 9311 cofsmo 10179 canthp1lem2 10564 gsumval3lem2 19835 psrass1lem 21888 psdmplcl 22105 mhmcompl 22324 comet 24457 dvcobr 25905 wrdpmcl 33020 gsumpart 33146 elrgspnlem1 33324 1arithidomlem2 33617 1arithidom 33618 mplvrpmlem 33708 mplvrpmfgalem 33709 mplvrpmga 33710 mplvrpmmhm 33711 mplvrpmrhm 33712 esplympl 33725 esplysply 33729 subfacp1lem5 35378 mapcod 42494 mhmcopsr 42798 selvvvval 42824 chnsubseqword 47118 upgrimwlklem4 48142 itcovalendof 48911 fucoid 49589 |
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