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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 17769 | . . . 4 ⊢ 𝐵 = (Base‘𝑂) |
| 4 | eqid 2763 | . . . 4 ⊢ (Hom ‘𝑂) = (Hom ‘𝑂) | |
| 5 | eqid 2763 | . . . 4 ⊢ (comp‘𝑂) = (comp‘𝑂) | |
| 6 | eqid 2763 | . . . 4 ⊢ (Id‘𝑂) = (Id‘𝑂) | |
| 7 | oppcsect.t | . . . 4 ⊢ 𝑇 = (Sect‘𝑂) | |
| 8 | oppcsect.c | . . . . 5 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 9 | 1 | oppccat 17773 | . . . . 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 17804 | . . 3 ⊢ (𝜑 → (𝑋𝑇𝑌) ⊆ ((𝑋(Hom ‘𝑂)𝑌) × (𝑌(Hom ‘𝑂)𝑋))) |
| 14 | relxp 5679 | . . 3 ⊢ Rel ((𝑋(Hom ‘𝑂)𝑌) × (𝑌(Hom ‘𝑂)𝑋)) | |
| 15 | relss 5768 | . . 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 6106 | . . 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 17830 | . . 3 ⊢ (𝜑 → (𝑓(𝑋𝑇𝑌)𝑔 ↔ 𝑔(𝑋𝑆𝑌)𝑓)) |
| 21 | vex 3459 | . . . 4 ⊢ 𝑓 ∈ V | |
| 22 | vex 3459 | . . . 4 ⊢ 𝑔 ∈ V | |
| 23 | 21, 22 | brcnv 5868 | . . 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 5779 | 1 ⊢ (𝜑 → (𝑋𝑇𝑌) = ◡(𝑋𝑆𝑌)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ∈ wcel 2143 ⊆ wss 3905 class class class wbr 5109 × cxp 5659 ◡ccnv 5660 Rel wrel 5666 ‘cfv 6536 (class class class)co 7410 Basecbs 17264 Hom chom 17316 compcco 17317 Catccat 17715 Idccid 17716 oppCatcoppc 17762 Sectcsect 17796 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5238 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11151 ax-resscn 11152 ax-1cn 11153 ax-icn 11154 ax-addcl 11155 ax-addrcl 11156 ax-mulcl 11157 ax-mulrcl 11158 ax-mulcom 11159 ax-addass 11160 ax-mulass 11161 ax-distr 11162 ax-i2m1 11163 ax-1ne0 11164 ax-1rid 11165 ax-rnegex 11166 ax-rrecex 11167 ax-cnre 11168 ax-pre-lttri 11169 ax-pre-lttrn 11170 ax-pre-ltadd 11171 ax-pre-mulgt0 11172 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7859 df-1st 7982 df-2nd 7983 df-tpos 8218 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11240 df-mnf 11241 df-xr 11242 df-ltxr 11243 df-le 11244 df-sub 11438 df-neg 11439 df-nn 12229 df-2 12298 df-3 12299 df-4 12300 df-5 12301 df-6 12302 df-7 12303 df-8 12304 df-9 12305 df-n0 12500 df-z 12587 df-dec 12707 df-sets 17219 df-slot 17237 df-ndx 17249 df-base 17265 df-hom 17329 df-cco 17330 df-cat 17719 df-cid 17720 df-oppc 17763 df-sect 17799 |
| This theorem is referenced by: oppcinv 17832 |
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