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| Mirrors > Home > MPE Home > Th. List > oppcsect2 | Structured version Visualization version GIF version | ||
| Description: A section in the opposite category. (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) |
| oppcsect.s | ⊢ 𝑆 = (Sect‘𝐶) |
| oppcsect.t | ⊢ 𝑇 = (Sect‘𝑂) |
| Ref | Expression |
|---|---|
| oppcsect2 | ⊢ (𝜑 → (𝑋𝑇𝑌) = ◡(𝑋𝑆𝑌)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oppcsect.o | . . . . 5 ⊢ 𝑂 = (oppCat‘𝐶) | |
| 2 | oppcsect.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐶) | |
| 3 | 1, 2 | oppcbas 17774 | . . . 4 ⊢ 𝐵 = (Base‘𝑂) |
| 4 | eqid 2769 | . . . 4 ⊢ (Hom ‘𝑂) = (Hom ‘𝑂) | |
| 5 | eqid 2769 | . . . 4 ⊢ (comp‘𝑂) = (comp‘𝑂) | |
| 6 | eqid 2769 | . . . 4 ⊢ (Id‘𝑂) = (Id‘𝑂) | |
| 7 | oppcsect.t | . . . 4 ⊢ 𝑇 = (Sect‘𝑂) | |
| 8 | oppcsect.c | . . . . 5 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 9 | 1 | oppccat 17778 | . . . . 5 ⊢ (𝐶 ∈ Cat → 𝑂 ∈ Cat) |
| 10 | 8, 9 | syl 18 | . . . 4 ⊢ (𝜑 → 𝑂 ∈ Cat) |
| 11 | oppcsect.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 12 | oppcsect.y | . . . 4 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
| 13 | 3, 4, 5, 6, 7, 10, 11, 12 | sectss 17809 | . . 3 ⊢ (𝜑 → (𝑋𝑇𝑌) ⊆ ((𝑋(Hom ‘𝑂)𝑌) × (𝑌(Hom ‘𝑂)𝑋))) |
| 14 | relxp 5680 | . . 3 ⊢ Rel ((𝑋(Hom ‘𝑂)𝑌) × (𝑌(Hom ‘𝑂)𝑋)) | |
| 15 | relss 5769 | . . 3 ⊢ ((𝑋𝑇𝑌) ⊆ ((𝑋(Hom ‘𝑂)𝑌) × (𝑌(Hom ‘𝑂)𝑋)) → (Rel ((𝑋(Hom ‘𝑂)𝑌) × (𝑌(Hom ‘𝑂)𝑋)) → Rel (𝑋𝑇𝑌))) | |
| 16 | 13, 14, 15 | mpisyl 22 | . 2 ⊢ (𝜑 → Rel (𝑋𝑇𝑌)) |
| 17 | relcnv 6107 | . . 3 ⊢ Rel ◡(𝑋𝑆𝑌) | |
| 18 | 17 | a1i 11 | . 2 ⊢ (𝜑 → Rel ◡(𝑋𝑆𝑌)) |
| 19 | oppcsect.s | . . . 4 ⊢ 𝑆 = (Sect‘𝐶) | |
| 20 | 2, 1, 8, 11, 12, 19, 7 | oppcsect 17835 | . . 3 ⊢ (𝜑 → (𝑓(𝑋𝑇𝑌)𝑔 ↔ 𝑔(𝑋𝑆𝑌)𝑓)) |
| 21 | vex 3467 | . . . 4 ⊢ 𝑓 ∈ V | |
| 22 | vex 3467 | . . . 4 ⊢ 𝑔 ∈ V | |
| 23 | 21, 22 | brcnv 5869 | . . 3 ⊢ (𝑓◡(𝑋𝑆𝑌)𝑔 ↔ 𝑔(𝑋𝑆𝑌)𝑓) |
| 24 | 20, 23 | bitr4di 292 | . 2 ⊢ (𝜑 → (𝑓(𝑋𝑇𝑌)𝑔 ↔ 𝑓◡(𝑋𝑆𝑌)𝑔)) |
| 25 | 16, 18, 24 | eqbrrdv 5780 | 1 ⊢ (𝜑 → (𝑋𝑇𝑌) = ◡(𝑋𝑆𝑌)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1567 ∈ wcel 2149 ⊆ wss 3913 class class class wbr 5113 × cxp 5660 ◡ccnv 5661 Rel wrel 5667 ‘cfv 6537 (class class class)co 7411 Basecbs 17269 Hom chom 17321 compcco 17322 Catccat 17720 Idccid 17721 oppCatcoppc 17767 Sectcsect 17801 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5242 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11156 ax-resscn 11157 ax-1cn 11158 ax-icn 11159 ax-addcl 11160 ax-addrcl 11161 ax-mulcl 11162 ax-mulrcl 11163 ax-mulcom 11164 ax-addass 11165 ax-mulass 11166 ax-distr 11167 ax-i2m1 11168 ax-1ne0 11169 ax-1rid 11170 ax-rnegex 11171 ax-rrecex 11172 ax-cnre 11173 ax-pre-lttri 11174 ax-pre-lttrn 11175 ax-pre-ltadd 11176 ax-pre-mulgt0 11177 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7863 df-1st 7986 df-2nd 7987 df-tpos 8222 df-frecs 8278 df-wrecs 8309 df-recs 8358 df-rdg 8397 df-er 8694 df-en 8944 df-dom 8945 df-sdom 8946 df-pnf 11245 df-mnf 11246 df-xr 11247 df-ltxr 11248 df-le 11249 df-sub 11443 df-neg 11444 df-nn 12234 df-2 12303 df-3 12304 df-4 12305 df-5 12306 df-6 12307 df-7 12308 df-8 12309 df-9 12310 df-n0 12505 df-z 12592 df-dec 12712 df-sets 17224 df-slot 17242 df-ndx 17254 df-base 17270 df-hom 17334 df-cco 17335 df-cat 17724 df-cid 17725 df-oppc 17768 df-sect 17804 |
| This theorem is referenced by: oppcinv 17837 |
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