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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fucorid2 | Structured version Visualization version GIF version | ||
| Description: Pre-composing a natural transformation with the identity natural transformation of a functor is pre-composing it with the object part of the functor. (Contributed by Zhi Wang, 11-Oct-2025.) |
| Ref | Expression |
|---|---|
| fucolid.p | ⊢ (𝜑 → (2nd ‘(〈𝐶, 𝐷〉 ∘F 𝐸)) = 𝑃) |
| fucolid.i | ⊢ 𝐼 = (Id‘𝑄) |
| fucorid.q | ⊢ 𝑄 = (𝐶 FuncCat 𝐷) |
| fucorid.a | ⊢ (𝜑 → 𝐴 ∈ (𝐺(𝐷 Nat 𝐸)𝐻)) |
| fucorid.f | ⊢ (𝜑 → 𝐹 ∈ (𝐶 Func 𝐷)) |
| Ref | Expression |
|---|---|
| fucorid2 | ⊢ (𝜑 → (𝐴(〈𝐺, 𝐹〉𝑃〈𝐻, 𝐹〉)(𝐼‘𝐹)) = (𝐴 ∘ (1st ‘𝐹))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fucolid.p | . . 3 ⊢ (𝜑 → (2nd ‘(〈𝐶, 𝐷〉 ∘F 𝐸)) = 𝑃) | |
| 2 | fucolid.i | . . 3 ⊢ 𝐼 = (Id‘𝑄) | |
| 3 | fucorid.q | . . 3 ⊢ 𝑄 = (𝐶 FuncCat 𝐷) | |
| 4 | fucorid.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ (𝐺(𝐷 Nat 𝐸)𝐻)) | |
| 5 | fucorid.f | . . 3 ⊢ (𝜑 → 𝐹 ∈ (𝐶 Func 𝐷)) | |
| 6 | 1, 2, 3, 4, 5 | fucorid 49864 | . 2 ⊢ (𝜑 → (𝐴(〈𝐺, 𝐹〉𝑃〈𝐻, 𝐹〉)(𝐼‘𝐹)) = (𝑥 ∈ (Base‘𝐶) ↦ (𝐴‘((1st ‘𝐹)‘𝑥)))) |
| 7 | eqid 2741 | . . . . 5 ⊢ (𝐷 Nat 𝐸) = (𝐷 Nat 𝐸) | |
| 8 | 7, 4 | nat1st2nd 17916 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ (〈(1st ‘𝐺), (2nd ‘𝐺)〉(𝐷 Nat 𝐸)〈(1st ‘𝐻), (2nd ‘𝐻)〉)) |
| 9 | eqid 2741 | . . . . 5 ⊢ (Base‘𝐷) = (Base‘𝐷) | |
| 10 | 7, 8, 9 | natfn 17919 | . . . 4 ⊢ (𝜑 → 𝐴 Fn (Base‘𝐷)) |
| 11 | dffn2 6660 | . . . 4 ⊢ (𝐴 Fn (Base‘𝐷) ↔ 𝐴:(Base‘𝐷)⟶V) | |
| 12 | 10, 11 | sylib 220 | . . 3 ⊢ (𝜑 → 𝐴:(Base‘𝐷)⟶V) |
| 13 | eqid 2741 | . . . 4 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 14 | 5 | func1st2nd 49578 | . . . 4 ⊢ (𝜑 → (1st ‘𝐹)(𝐶 Func 𝐷)(2nd ‘𝐹)) |
| 15 | 13, 9, 14 | funcf1 17828 | . . 3 ⊢ (𝜑 → (1st ‘𝐹):(Base‘𝐶)⟶(Base‘𝐷)) |
| 16 | fcompt 7078 | . . 3 ⊢ ((𝐴:(Base‘𝐷)⟶V ∧ (1st ‘𝐹):(Base‘𝐶)⟶(Base‘𝐷)) → (𝐴 ∘ (1st ‘𝐹)) = (𝑥 ∈ (Base‘𝐶) ↦ (𝐴‘((1st ‘𝐹)‘𝑥)))) | |
| 17 | 12, 15, 16 | syl2anc 591 | . 2 ⊢ (𝜑 → (𝐴 ∘ (1st ‘𝐹)) = (𝑥 ∈ (Base‘𝐶) ↦ (𝐴‘((1st ‘𝐹)‘𝑥)))) |
| 18 | 6, 17 | eqtr4d 2779 | 1 ⊢ (𝜑 → (𝐴(〈𝐺, 𝐹〉𝑃〈𝐻, 𝐹〉)(𝐼‘𝐹)) = (𝐴 ∘ (1st ‘𝐹))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1548 ∈ wcel 2121 Vcvv 3433 〈cop 4563 ↦ cmpt 5155 ∘ ccom 5624 Fn wfn 6483 ⟶wf 6484 ‘cfv 6488 (class class class)co 7359 1st c1st 7931 2nd c2nd 7932 Basecbs 17174 Idccid 17626 Func cfunc 17816 Nat cnat 17906 FuncCat cfuc 17907 ∘F cfuco 49818 |
| 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 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7681 ax-cnex 11090 ax-resscn 11091 ax-1cn 11092 ax-icn 11093 ax-addcl 11094 ax-addrcl 11095 ax-mulcl 11096 ax-mulrcl 11097 ax-mulcom 11098 ax-addass 11099 ax-mulass 11100 ax-distr 11101 ax-i2m1 11102 ax-1ne0 11103 ax-1rid 11104 ax-rnegex 11105 ax-rrecex 11106 ax-cnre 11107 ax-pre-lttri 11108 ax-pre-lttrn 11109 ax-pre-ltadd 11110 ax-pre-mulgt0 11111 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3725 df-csb 3833 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-pss 3904 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-tp 4562 df-op 4564 df-uni 4841 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6255 df-ord 6316 df-on 6317 df-lim 6318 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7316 df-ov 7362 df-oprab 7363 df-mpo 7364 df-om 7810 df-1st 7933 df-2nd 7934 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8343 df-1o 8399 df-er 8637 df-map 8769 df-ixp 8840 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-pnf 11177 df-mnf 11178 df-xr 11179 df-ltxr 11180 df-le 11181 df-sub 11375 df-neg 11376 df-nn 12170 df-2 12239 df-3 12240 df-4 12241 df-5 12242 df-6 12243 df-7 12244 df-8 12245 df-9 12246 df-n0 12433 df-z 12520 df-dec 12640 df-uz 12784 df-fz 13457 df-struct 17112 df-slot 17147 df-ndx 17159 df-base 17175 df-hom 17239 df-cco 17240 df-cat 17629 df-cid 17630 df-func 17820 df-cofu 17822 df-nat 17908 df-fuc 17909 df-fuco 49819 |
| This theorem is referenced by: (None) |
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