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| Mirrors > Home > MPE Home > Th. List > diagcl | Structured version Visualization version GIF version | ||
| Description: The diagonal functor is a functor from the base category to the functor category. Another way of saying this is that the constant functor (𝑦 ∈ 𝐷 ↦ 𝑋) is a construction that is natural in 𝑋 (and covariant). (Contributed by Mario Carneiro, 7-Jan-2017.) (Revised by Mario Carneiro, 15-Jan-2017.) |
| Ref | Expression |
|---|---|
| diagval.l | ⊢ 𝐿 = (𝐶Δfunc𝐷) |
| diagval.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
| diagval.d | ⊢ (𝜑 → 𝐷 ∈ Cat) |
| diagcl.q | ⊢ 𝑄 = (𝐷 FuncCat 𝐶) |
| Ref | Expression |
|---|---|
| diagcl | ⊢ (𝜑 → 𝐿 ∈ (𝐶 Func 𝑄)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | diagval.l | . . 3 ⊢ 𝐿 = (𝐶Δfunc𝐷) | |
| 2 | diagval.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 3 | diagval.d | . . 3 ⊢ (𝜑 → 𝐷 ∈ Cat) | |
| 4 | 1, 2, 3 | diagval 18177 | . 2 ⊢ (𝜑 → 𝐿 = (〈𝐶, 𝐷〉 curryF (𝐶 1stF 𝐷))) |
| 5 | eqid 2729 | . . 3 ⊢ (〈𝐶, 𝐷〉 curryF (𝐶 1stF 𝐷)) = (〈𝐶, 𝐷〉 curryF (𝐶 1stF 𝐷)) | |
| 6 | diagcl.q | . . 3 ⊢ 𝑄 = (𝐷 FuncCat 𝐶) | |
| 7 | eqid 2729 | . . . 4 ⊢ (𝐶 ×c 𝐷) = (𝐶 ×c 𝐷) | |
| 8 | eqid 2729 | . . . 4 ⊢ (𝐶 1stF 𝐷) = (𝐶 1stF 𝐷) | |
| 9 | 7, 2, 3, 8 | 1stfcl 18134 | . . 3 ⊢ (𝜑 → (𝐶 1stF 𝐷) ∈ ((𝐶 ×c 𝐷) Func 𝐶)) |
| 10 | 5, 6, 2, 3, 9 | curfcl 18169 | . 2 ⊢ (𝜑 → (〈𝐶, 𝐷〉 curryF (𝐶 1stF 𝐷)) ∈ (𝐶 Func 𝑄)) |
| 11 | 4, 10 | eqeltrd 2828 | 1 ⊢ (𝜑 → 𝐿 ∈ (𝐶 Func 𝑄)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 〈cop 4591 (class class class)co 7369 Catccat 17601 Func cfunc 17792 FuncCat cfuc 17883 ×c cxpc 18105 1stF c1stf 18106 curryF ccurf 18147 Δfunccdiag 18149 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5229 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-cnex 11100 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3351 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-tp 4590 df-op 4592 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6262 df-ord 6323 df-on 6324 df-lim 6325 df-suc 6326 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-om 7823 df-1st 7947 df-2nd 7948 df-frecs 8237 df-wrecs 8268 df-recs 8317 df-rdg 8355 df-1o 8411 df-er 8648 df-map 8778 df-ixp 8848 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-nn 12163 df-2 12225 df-3 12226 df-4 12227 df-5 12228 df-6 12229 df-7 12230 df-8 12231 df-9 12232 df-n0 12419 df-z 12506 df-dec 12626 df-uz 12770 df-fz 13445 df-struct 17093 df-slot 17128 df-ndx 17140 df-base 17156 df-hom 17220 df-cco 17221 df-cat 17605 df-cid 17606 df-func 17796 df-nat 17884 df-fuc 17885 df-xpc 18109 df-1stf 18110 df-curf 18151 df-diag 18153 |
| This theorem is referenced by: diag1cl 18179 diag2cl 18183 diag1f1 49269 diag2f1 49271 prcofdiag 49356 oppfdiag1 49376 oppfdiag 49378 diagffth 49500 islmd 49627 iscmd 49628 lmddu 49629 initocmd 49631 lmdran 49633 |
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