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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 50020 | . 2 ⊢ (𝜑 → (𝐴(〈𝐺, 𝐹〉𝑃〈𝐻, 𝐹〉)(𝐼‘𝐹)) = (𝑥 ∈ (Base‘𝐶) ↦ (𝐴‘((1st ‘𝐹)‘𝑥)))) |
| 7 | eqid 2769 | . . . . 5 ⊢ (𝐷 Nat 𝐸) = (𝐷 Nat 𝐸) | |
| 8 | 7, 4 | nat1st2nd 18007 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ (〈(1st ‘𝐺), (2nd ‘𝐺)〉(𝐷 Nat 𝐸)〈(1st ‘𝐻), (2nd ‘𝐻)〉)) |
| 9 | eqid 2769 | . . . . 5 ⊢ (Base‘𝐷) = (Base‘𝐷) | |
| 10 | 7, 8, 9 | natfn 18010 | . . . 4 ⊢ (𝜑 → 𝐴 Fn (Base‘𝐷)) |
| 11 | dffn2 6705 | . . . 4 ⊢ (𝐴 Fn (Base‘𝐷) ↔ 𝐴:(Base‘𝐷)⟶V) | |
| 12 | 10, 11 | sylib 221 | . . 3 ⊢ (𝜑 → 𝐴:(Base‘𝐷)⟶V) |
| 13 | eqid 2769 | . . . 4 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 14 | 5 | func1st2nd 49734 | . . . 4 ⊢ (𝜑 → (1st ‘𝐹)(𝐶 Func 𝐷)(2nd ‘𝐹)) |
| 15 | 13, 9, 14 | funcf1 17919 | . . 3 ⊢ (𝜑 → (1st ‘𝐹):(Base‘𝐶)⟶(Base‘𝐷)) |
| 16 | fcompt 7127 | . . 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 595 | . 2 ⊢ (𝜑 → (𝐴 ∘ (1st ‘𝐹)) = (𝑥 ∈ (Base‘𝐶) ↦ (𝐴‘((1st ‘𝐹)‘𝑥)))) |
| 18 | 6, 17 | eqtr4d 2807 | 1 ⊢ (𝜑 → (𝐴(〈𝐺, 𝐹〉𝑃〈𝐻, 𝐹〉)(𝐼‘𝐹)) = (𝐴 ∘ (1st ‘𝐹))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1567 ∈ wcel 2149 Vcvv 3463 〈cop 4597 ↦ cmpt 5193 ∘ ccom 5663 Fn wfn 6529 ⟶wf 6530 ‘cfv 6534 (class class class)co 7408 1st c1st 7980 2nd c2nd 7981 Basecbs 17265 Idccid 17717 Func cfunc 17907 Nat cnat 17997 FuncCat cfuc 17998 ∘F cfuco 49974 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5239 ax-sep 5258 ax-nul 5268 ax-pow 5334 ax-pr 5402 ax-un 7730 ax-cnex 11152 ax-resscn 11153 ax-1cn 11154 ax-icn 11155 ax-addcl 11156 ax-addrcl 11157 ax-mulcl 11158 ax-mulrcl 11159 ax-mulcom 11160 ax-addass 11161 ax-mulass 11162 ax-distr 11163 ax-i2m1 11164 ax-1ne0 11165 ax-1rid 11166 ax-rnegex 11167 ax-rrecex 11168 ax-cnre 11169 ax-pre-lttri 11170 ax-pre-lttrn 11171 ax-pre-ltadd 11172 ax-pre-mulgt0 11173 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-tp 4596 df-op 4598 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6300 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6490 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 df-fv 6542 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7859 df-1st 7982 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-1o 8449 df-er 8690 df-map 8822 df-ixp 8892 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-pnf 11241 df-mnf 11242 df-xr 11243 df-ltxr 11244 df-le 11245 df-sub 11439 df-neg 11440 df-nn 12230 df-2 12299 df-3 12300 df-4 12301 df-5 12302 df-6 12303 df-7 12304 df-8 12305 df-9 12306 df-n0 12501 df-z 12588 df-dec 12708 df-uz 12859 df-fz 13532 df-struct 17203 df-slot 17238 df-ndx 17250 df-base 17266 df-hom 17330 df-cco 17331 df-cat 17720 df-cid 17721 df-func 17911 df-cofu 17913 df-nat 17999 df-fuc 18000 df-fuco 49975 |
| This theorem is referenced by: (None) |
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