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| Mirrors > Home > MPE Home > Th. List > oppciso | Structured version Visualization version GIF version | ||
| Description: An isomorphism in the opposite category. See also remark 3.9 in [Adamek] p. 28. (Contributed by Mario Carneiro, 3-Jan-2017.) |
| Ref | Expression |
|---|---|
| oppcsect.b | ⊢ 𝐵 = (Base‘𝐶) |
| oppcsect.o | ⊢ 𝑂 = (oppCat‘𝐶) |
| oppcsect.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
| oppcsect.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| oppcsect.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
| oppciso.s | ⊢ 𝐼 = (Iso‘𝐶) |
| oppciso.t | ⊢ 𝐽 = (Iso‘𝑂) |
| Ref | Expression |
|---|---|
| oppciso | ⊢ (𝜑 → (𝑋𝐽𝑌) = (𝑌𝐼𝑋)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oppcsect.b | . . . 4 ⊢ 𝐵 = (Base‘𝐶) | |
| 2 | oppcsect.o | . . . 4 ⊢ 𝑂 = (oppCat‘𝐶) | |
| 3 | oppcsect.c | . . . 4 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 4 | oppcsect.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 5 | oppcsect.y | . . . 4 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 6 | eqid 2737 | . . . 4 ⊢ (Inv‘𝐶) = (Inv‘𝐶) | |
| 7 | eqid 2737 | . . . 4 ⊢ (Inv‘𝑂) = (Inv‘𝑂) | |
| 8 | 1, 2, 3, 4, 5, 6, 7 | oppcinv 17705 | . . 3 ⊢ (𝜑 → (𝑋(Inv‘𝑂)𝑌) = (𝑌(Inv‘𝐶)𝑋)) |
| 9 | 8 | dmeqd 5852 | . 2 ⊢ (𝜑 → dom (𝑋(Inv‘𝑂)𝑌) = dom (𝑌(Inv‘𝐶)𝑋)) |
| 10 | 2, 1 | oppcbas 17642 | . . 3 ⊢ 𝐵 = (Base‘𝑂) |
| 11 | 2 | oppccat 17646 | . . . 4 ⊢ (𝐶 ∈ Cat → 𝑂 ∈ Cat) |
| 12 | 3, 11 | syl 17 | . . 3 ⊢ (𝜑 → 𝑂 ∈ Cat) |
| 13 | oppciso.t | . . 3 ⊢ 𝐽 = (Iso‘𝑂) | |
| 14 | 10, 7, 12, 4, 5, 13 | isoval 17690 | . 2 ⊢ (𝜑 → (𝑋𝐽𝑌) = dom (𝑋(Inv‘𝑂)𝑌)) |
| 15 | oppciso.s | . . 3 ⊢ 𝐼 = (Iso‘𝐶) | |
| 16 | 1, 6, 3, 5, 4, 15 | isoval 17690 | . 2 ⊢ (𝜑 → (𝑌𝐼𝑋) = dom (𝑌(Inv‘𝐶)𝑋)) |
| 17 | 9, 14, 16 | 3eqtr4d 2782 | 1 ⊢ (𝜑 → (𝑋𝐽𝑌) = (𝑌𝐼𝑋)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 dom cdm 5622 ‘cfv 6490 (class class class)co 7358 Basecbs 17137 Catccat 17588 oppCatcoppc 17635 Invcinv 17670 Isociso 17671 |
| 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-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-tpos 8167 df-frecs 8222 df-wrecs 8253 df-recs 8302 df-rdg 8340 df-er 8634 df-en 8885 df-dom 8886 df-sdom 8887 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-sets 17092 df-slot 17110 df-ndx 17122 df-base 17138 df-hom 17202 df-cco 17203 df-cat 17592 df-cid 17593 df-oppc 17636 df-sect 17672 df-inv 17673 df-iso 17674 |
| This theorem is referenced by: oppccic 49477 |
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