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| Mirrors > Home > MPE Home > Th. List > Mathboxes > swapfid | Structured version Visualization version GIF version | ||
| Description: Each identity morphism in the source category is mapped to the corresponding identity morphism in the target category. See also swapfida 50387. (Contributed by Zhi Wang, 8-Oct-2025.) |
| Ref | Expression |
|---|---|
| swapfid.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
| swapfid.d | ⊢ (𝜑 → 𝐷 ∈ Cat) |
| swapfid.s | ⊢ 𝑆 = (𝐶 ×c 𝐷) |
| swapfid.t | ⊢ 𝑇 = (𝐷 ×c 𝐶) |
| swapfid.o | ⊢ (𝜑 → (𝐶 swapF 𝐷) = 〈𝑂, 𝑃〉) |
| swapfid.x | ⊢ (𝜑 → 𝑋 ∈ (Base‘𝐶)) |
| swapfid.y | ⊢ (𝜑 → 𝑌 ∈ (Base‘𝐷)) |
| swapfid.1 | ⊢ 1 = (Id‘𝑆) |
| swapfid.i | ⊢ 𝐼 = (Id‘𝑇) |
| Ref | Expression |
|---|---|
| swapfid | ⊢ (𝜑 → ((〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)‘( 1 ‘〈𝑋, 𝑌〉)) = (𝐼‘(𝑂‘〈𝑋, 𝑌〉))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | swapfid.t | . . 3 ⊢ 𝑇 = (𝐷 ×c 𝐶) | |
| 2 | swapfid.d | . . 3 ⊢ (𝜑 → 𝐷 ∈ Cat) | |
| 3 | swapfid.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 4 | eqid 2761 | . . 3 ⊢ (Base‘𝐷) = (Base‘𝐷) | |
| 5 | eqid 2761 | . . 3 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 6 | eqid 2761 | . . 3 ⊢ (Id‘𝐷) = (Id‘𝐷) | |
| 7 | eqid 2761 | . . 3 ⊢ (Id‘𝐶) = (Id‘𝐶) | |
| 8 | swapfid.i | . . 3 ⊢ 𝐼 = (Id‘𝑇) | |
| 9 | swapfid.y | . . 3 ⊢ (𝜑 → 𝑌 ∈ (Base‘𝐷)) | |
| 10 | swapfid.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ (Base‘𝐶)) | |
| 11 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | xpcid 18363 | . 2 ⊢ (𝜑 → (𝐼‘〈𝑌, 𝑋〉) = 〈((Id‘𝐷)‘𝑌), ((Id‘𝐶)‘𝑋)〉) |
| 12 | df-ov 7423 | . . . 4 ⊢ (𝑋𝑂𝑌) = (𝑂‘〈𝑋, 𝑌〉) | |
| 13 | swapfid.o | . . . . 5 ⊢ (𝜑 → (𝐶 swapF 𝐷) = 〈𝑂, 𝑃〉) | |
| 14 | 13, 10, 9 | swapf1 50379 | . . . 4 ⊢ (𝜑 → (𝑋𝑂𝑌) = 〈𝑌, 𝑋〉) |
| 15 | 12, 14 | eqtr3id 2810 | . . 3 ⊢ (𝜑 → (𝑂‘〈𝑋, 𝑌〉) = 〈𝑌, 𝑋〉) |
| 16 | 15 | fveq2d 6889 | . 2 ⊢ (𝜑 → (𝐼‘(𝑂‘〈𝑋, 𝑌〉)) = (𝐼‘〈𝑌, 𝑋〉)) |
| 17 | swapfid.s | . . . . 5 ⊢ 𝑆 = (𝐶 ×c 𝐷) | |
| 18 | swapfid.1 | . . . . 5 ⊢ 1 = (Id‘𝑆) | |
| 19 | 17, 3, 2, 5, 4, 7, 6, 18, 10, 9 | xpcid 18363 | . . . 4 ⊢ (𝜑 → ( 1 ‘〈𝑋, 𝑌〉) = 〈((Id‘𝐶)‘𝑋), ((Id‘𝐷)‘𝑌)〉) |
| 20 | 19 | fveq2d 6889 | . . 3 ⊢ (𝜑 → ((〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)‘( 1 ‘〈𝑋, 𝑌〉)) = ((〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)‘〈((Id‘𝐶)‘𝑋), ((Id‘𝐷)‘𝑌)〉)) |
| 21 | df-ov 7423 | . . . 4 ⊢ (((Id‘𝐶)‘𝑋)(〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)((Id‘𝐷)‘𝑌)) = ((〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)‘〈((Id‘𝐶)‘𝑋), ((Id‘𝐷)‘𝑌)〉) | |
| 22 | 21 | a1i 11 | . . 3 ⊢ (𝜑 → (((Id‘𝐶)‘𝑋)(〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)((Id‘𝐷)‘𝑌)) = ((〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)‘〈((Id‘𝐶)‘𝑋), ((Id‘𝐷)‘𝑌)〉)) |
| 23 | eqid 2761 | . . . . 5 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
| 24 | 5, 23, 7, 3, 10 | catidcl 17856 | . . . 4 ⊢ (𝜑 → ((Id‘𝐶)‘𝑋) ∈ (𝑋(Hom ‘𝐶)𝑋)) |
| 25 | eqid 2761 | . . . . 5 ⊢ (Hom ‘𝐷) = (Hom ‘𝐷) | |
| 26 | 4, 25, 6, 2, 9 | catidcl 17856 | . . . 4 ⊢ (𝜑 → ((Id‘𝐷)‘𝑌) ∈ (𝑌(Hom ‘𝐷)𝑌)) |
| 27 | 13, 10, 9, 10, 9, 24, 26 | swapf2 50381 | . . 3 ⊢ (𝜑 → (((Id‘𝐶)‘𝑋)(〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)((Id‘𝐷)‘𝑌)) = 〈((Id‘𝐷)‘𝑌), ((Id‘𝐶)‘𝑋)〉) |
| 28 | 20, 22, 27 | 3eqtr2d 2802 | . 2 ⊢ (𝜑 → ((〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)‘( 1 ‘〈𝑋, 𝑌〉)) = 〈((Id‘𝐷)‘𝑌), ((Id‘𝐶)‘𝑋)〉) |
| 29 | 11, 16, 28 | 3eqtr4rd 2807 | 1 ⊢ (𝜑 → ((〈𝑋, 𝑌〉𝑃〈𝑋, 𝑌〉)‘( 1 ‘〈𝑋, 𝑌〉)) = (𝐼‘(𝑂‘〈𝑋, 𝑌〉))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 〈cop 4590 ‘cfv 6538 (class class class)co 7420 Basecbs 17387 Hom chom 17439 Catccat 17838 Idccid 17839 ×c cxpc 18342 swapF cswapf 50366 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7751 ax-cnex 11256 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-1o 8476 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-fin 8977 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-nn 12336 df-2 12405 df-3 12406 df-4 12407 df-5 12408 df-6 12409 df-7 12410 df-8 12411 df-9 12412 df-n0 12607 df-z 12694 df-dec 12815 df-uz 12966 df-fz 13640 df-struct 17325 df-slot 17360 df-ndx 17372 df-base 17388 df-hom 17452 df-cco 17453 df-cat 17842 df-cid 17843 df-xpc 18346 df-swapf 50367 |
| This theorem is used by: swapfida 50387 |
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