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| Mirrors > Home > MPE Home > Th. List > Mathboxes > postcofcl | Structured version Visualization version GIF version | ||
| Description: The post-composition functor as a curry of the functor composition bifunctor is a functor. (Contributed by Zhi Wang, 11-Oct-2025.) |
| Ref | Expression |
|---|---|
| postcofval.q | ⊢ 𝑄 = (𝐶 FuncCat 𝐷) |
| postcofval.r | ⊢ 𝑅 = (𝐷 FuncCat 𝐸) |
| postcofval.o | ⊢ ⚬ = (〈𝑅, 𝑄〉 curryF (〈𝐶, 𝐷〉 ∘F 𝐸)) |
| postcofval.f | ⊢ (𝜑 → 𝐹 ∈ (𝐷 Func 𝐸)) |
| postcofval.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
| postcofval.k | ⊢ 𝐾 = ((1st ‘ ⚬ )‘𝐹) |
| postcofcl.s | ⊢ 𝑆 = (𝐶 FuncCat 𝐸) |
| Ref | Expression |
|---|---|
| postcofcl | ⊢ (𝜑 → 𝐾 ∈ (𝑄 Func 𝑆)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | postcofval.o | . 2 ⊢ ⚬ = (〈𝑅, 𝑄〉 curryF (〈𝐶, 𝐷〉 ∘F 𝐸)) | |
| 2 | postcofval.r | . . 3 ⊢ 𝑅 = (𝐷 FuncCat 𝐸) | |
| 3 | 2 | fucbas 17888 | . 2 ⊢ (𝐷 Func 𝐸) = (Base‘𝑅) |
| 4 | postcofval.f | . . . . 5 ⊢ (𝜑 → 𝐹 ∈ (𝐷 Func 𝐸)) | |
| 5 | 4 | func1st2nd 49509 | . . . 4 ⊢ (𝜑 → (1st ‘𝐹)(𝐷 Func 𝐸)(2nd ‘𝐹)) |
| 6 | 5 | funcrcl2 49512 | . . 3 ⊢ (𝜑 → 𝐷 ∈ Cat) |
| 7 | 5 | funcrcl3 49513 | . . 3 ⊢ (𝜑 → 𝐸 ∈ Cat) |
| 8 | 2, 6, 7 | fuccat 17898 | . 2 ⊢ (𝜑 → 𝑅 ∈ Cat) |
| 9 | postcofval.q | . . 3 ⊢ 𝑄 = (𝐶 FuncCat 𝐷) | |
| 10 | postcofval.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 11 | 9, 10, 6 | fuccat 17898 | . 2 ⊢ (𝜑 → 𝑄 ∈ Cat) |
| 12 | 2, 9 | oveq12i 7370 | . . 3 ⊢ (𝑅 ×c 𝑄) = ((𝐷 FuncCat 𝐸) ×c (𝐶 FuncCat 𝐷)) |
| 13 | postcofcl.s | . . 3 ⊢ 𝑆 = (𝐶 FuncCat 𝐸) | |
| 14 | 12, 13, 10, 6, 7 | fucofunca 49793 | . 2 ⊢ (𝜑 → (〈𝐶, 𝐷〉 ∘F 𝐸) ∈ ((𝑅 ×c 𝑄) Func 𝑆)) |
| 15 | eqid 2737 | . 2 ⊢ (Base‘𝑄) = (Base‘𝑄) | |
| 16 | postcofval.k | . 2 ⊢ 𝐾 = ((1st ‘ ⚬ )‘𝐹) | |
| 17 | 1, 3, 8, 11, 14, 15, 4, 16 | curf1cl 18152 | 1 ⊢ (𝜑 → 𝐾 ∈ (𝑄 Func 𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 〈cop 4574 ‘cfv 6490 (class class class)co 7358 1st c1st 7931 2nd c2nd 7932 Basecbs 17137 Catccat 17588 Func cfunc 17779 FuncCat cfuc 17870 ×c cxpc 18092 curryF ccurf 18134 ∘F cfuco 49749 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5368 ax-un 7680 ax-cnex 11083 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-mulcom 11091 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 ax-pre-mulgt0 11104 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-1st 7933 df-2nd 7934 df-frecs 8222 df-wrecs 8253 df-recs 8302 df-rdg 8340 df-1o 8396 df-er 8634 df-map 8766 df-ixp 8837 df-en 8885 df-dom 8886 df-sdom 8887 df-fin 8888 df-pnf 11169 df-mnf 11170 df-xr 11171 df-ltxr 11172 df-le 11173 df-sub 11367 df-neg 11368 df-nn 12147 df-2 12209 df-3 12210 df-4 12211 df-5 12212 df-6 12213 df-7 12214 df-8 12215 df-9 12216 df-n0 12403 df-z 12490 df-dec 12609 df-uz 12753 df-fz 13425 df-struct 17075 df-slot 17110 df-ndx 17122 df-base 17138 df-hom 17202 df-cco 17203 df-cat 17592 df-cid 17593 df-func 17783 df-cofu 17785 df-nat 17871 df-fuc 17872 df-xpc 18096 df-curf 18138 df-fuco 49750 |
| This theorem is referenced by: (None) |
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