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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 17679 | . . . 4 ⊢ 𝐵 = (Base‘𝑂) |
| 4 | eqid 2729 | . . . 4 ⊢ (Hom ‘𝑂) = (Hom ‘𝑂) | |
| 5 | eqid 2729 | . . . 4 ⊢ (comp‘𝑂) = (comp‘𝑂) | |
| 6 | eqid 2729 | . . . 4 ⊢ (Id‘𝑂) = (Id‘𝑂) | |
| 7 | oppcsect.t | . . . 4 ⊢ 𝑇 = (Sect‘𝑂) | |
| 8 | oppcsect.c | . . . . 5 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 9 | 1 | oppccat 17683 | . . . . 5 ⊢ (𝐶 ∈ Cat → 𝑂 ∈ Cat) |
| 10 | 8, 9 | syl 17 | . . . 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 17714 | . . 3 ⊢ (𝜑 → (𝑋𝑇𝑌) ⊆ ((𝑋(Hom ‘𝑂)𝑌) × (𝑌(Hom ‘𝑂)𝑋))) |
| 14 | relxp 5656 | . . 3 ⊢ Rel ((𝑋(Hom ‘𝑂)𝑌) × (𝑌(Hom ‘𝑂)𝑋)) | |
| 15 | relss 5744 | . . 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 21 | . 2 ⊢ (𝜑 → Rel (𝑋𝑇𝑌)) |
| 17 | relcnv 6075 | . . 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 17740 | . . 3 ⊢ (𝜑 → (𝑓(𝑋𝑇𝑌)𝑔 ↔ 𝑔(𝑋𝑆𝑌)𝑓)) |
| 21 | vex 3451 | . . . 4 ⊢ 𝑓 ∈ V | |
| 22 | vex 3451 | . . . 4 ⊢ 𝑔 ∈ V | |
| 23 | 21, 22 | brcnv 5846 | . . 3 ⊢ (𝑓◡(𝑋𝑆𝑌)𝑔 ↔ 𝑔(𝑋𝑆𝑌)𝑓) |
| 24 | 20, 23 | bitr4di 289 | . 2 ⊢ (𝜑 → (𝑓(𝑋𝑇𝑌)𝑔 ↔ 𝑓◡(𝑋𝑆𝑌)𝑔)) |
| 25 | 16, 18, 24 | eqbrrdv 5756 | 1 ⊢ (𝜑 → (𝑋𝑇𝑌) = ◡(𝑋𝑆𝑌)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ⊆ wss 3914 class class class wbr 5107 × cxp 5636 ◡ccnv 5637 Rel wrel 5643 ‘cfv 6511 (class class class)co 7387 Basecbs 17179 Hom chom 17231 compcco 17232 Catccat 17625 Idccid 17626 oppCatcoppc 17672 Sectcsect 17706 |
| 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-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-tpos 8205 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-er 8671 df-en 8919 df-dom 8920 df-sdom 8921 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-sets 17134 df-slot 17152 df-ndx 17164 df-base 17180 df-hom 17244 df-cco 17245 df-cat 17629 df-cid 17630 df-oppc 17673 df-sect 17709 |
| This theorem is referenced by: oppcinv 17742 |
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