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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 18201 | . 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 18158 | . . 3 ⊢ (𝜑 → (𝐶 1stF 𝐷) ∈ ((𝐶 ×c 𝐷) Func 𝐶)) |
| 10 | 5, 6, 2, 3, 9 | curfcl 18193 | . 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 4595 (class class class)co 7387 Catccat 17625 Func cfunc 17816 FuncCat cfuc 17907 ×c cxpc 18129 1stF c1stf 18130 curryF ccurf 18171 Δfunccdiag 18173 |
| 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 5234 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 |
| 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 3354 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-tp 4594 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-om 7843 df-1st 7968 df-2nd 7969 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-1o 8434 df-er 8671 df-map 8801 df-ixp 8871 df-en 8919 df-dom 8920 df-sdom 8921 df-fin 8922 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-nn 12187 df-2 12249 df-3 12250 df-4 12251 df-5 12252 df-6 12253 df-7 12254 df-8 12255 df-9 12256 df-n0 12443 df-z 12530 df-dec 12650 df-uz 12794 df-fz 13469 df-struct 17117 df-slot 17152 df-ndx 17164 df-base 17180 df-hom 17244 df-cco 17245 df-cat 17629 df-cid 17630 df-func 17820 df-nat 17908 df-fuc 17909 df-xpc 18133 df-1stf 18134 df-curf 18175 df-diag 18177 |
| This theorem is referenced by: diag1cl 18203 diag2cl 18207 diag1f1 49296 diag2f1 49298 prcofdiag 49383 oppfdiag1 49403 oppfdiag 49405 diagffth 49527 islmd 49654 iscmd 49655 lmddu 49656 initocmd 49658 lmdran 49660 |
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