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| Mirrors > Home > MPE Home > Th. List > Mathboxes > oppc1stflem | Structured version Visualization version GIF version | ||
| Description: A utility theorem for proving theorems on projection functors of opposite categories. (Contributed by Zhi Wang, 19-Nov-2025.) |
| Ref | Expression |
|---|---|
| oppc1stf.o | ⊢ 𝑂 = (oppCat‘𝐶) |
| oppc1stf.p | ⊢ 𝑃 = (oppCat‘𝐷) |
| oppc1stf.c | ⊢ (𝜑 → 𝐶 ∈ 𝑉) |
| oppc1stf.d | ⊢ (𝜑 → 𝐷 ∈ 𝑊) |
| oppc1stflem.1 | ⊢ ((𝜑 ∧ (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) → ( oppFunc ‘(𝐶𝐹𝐷)) = (𝑂𝐹𝑃)) |
| oppc1stflem.f | ⊢ 𝐹 = (𝑐 ∈ Cat, 𝑑 ∈ Cat ↦ 𝑌) |
| Ref | Expression |
|---|---|
| oppc1stflem | ⊢ (𝜑 → ( oppFunc ‘(𝐶𝐹𝐷)) = (𝑂𝐹𝑃)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2739 | . . . . . . 7 ⊢ ( oppFunc ‘(𝐶𝐹𝐷)) = ( oppFunc ‘(𝐶𝐹𝐷)) | |
| 2 | simpr 485 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) → 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) | |
| 3 | 1, 2 | eloppf 49623 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) → ((𝐶𝐹𝐷) ≠ ∅ ∧ (Rel (2nd ‘(𝐶𝐹𝐷)) ∧ Rel dom (2nd ‘(𝐶𝐹𝐷))))) |
| 4 | 3 | simpld 495 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) → (𝐶𝐹𝐷) ≠ ∅) |
| 5 | oppc1stflem.f | . . . . . . 7 ⊢ 𝐹 = (𝑐 ∈ Cat, 𝑑 ∈ Cat ↦ 𝑌) | |
| 6 | 5 | mpondm0 7596 | . . . . . 6 ⊢ (¬ (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat) → (𝐶𝐹𝐷) = ∅) |
| 7 | 6 | necon1ai 2961 | . . . . 5 ⊢ ((𝐶𝐹𝐷) ≠ ∅ → (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) |
| 8 | 4, 7 | syl 17 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) → (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) |
| 9 | simplr 774 | . . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) ∧ (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) → 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) | |
| 10 | oppc1stflem.1 | . . . . . 6 ⊢ ((𝜑 ∧ (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) → ( oppFunc ‘(𝐶𝐹𝐷)) = (𝑂𝐹𝑃)) | |
| 11 | 10 | adantlr 721 | . . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) ∧ (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) → ( oppFunc ‘(𝐶𝐹𝐷)) = (𝑂𝐹𝑃)) |
| 12 | 9, 11 | eleqtrd 2841 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) ∧ (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) → 𝑥 ∈ (𝑂𝐹𝑃)) |
| 13 | 8, 12 | mpdan 693 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) → 𝑥 ∈ (𝑂𝐹𝑃)) |
| 14 | oppc1stf.o | . . . . . . . 8 ⊢ 𝑂 = (oppCat‘𝐶) | |
| 15 | oppc1stf.c | . . . . . . . 8 ⊢ (𝜑 → 𝐶 ∈ 𝑉) | |
| 16 | 14, 15 | oppccatb 49506 | . . . . . . 7 ⊢ (𝜑 → (𝐶 ∈ Cat ↔ 𝑂 ∈ Cat)) |
| 17 | oppc1stf.p | . . . . . . . 8 ⊢ 𝑃 = (oppCat‘𝐷) | |
| 18 | oppc1stf.d | . . . . . . . 8 ⊢ (𝜑 → 𝐷 ∈ 𝑊) | |
| 19 | 17, 18 | oppccatb 49506 | . . . . . . 7 ⊢ (𝜑 → (𝐷 ∈ Cat ↔ 𝑃 ∈ Cat)) |
| 20 | 16, 19 | anbi12d 638 | . . . . . 6 ⊢ (𝜑 → ((𝐶 ∈ Cat ∧ 𝐷 ∈ Cat) ↔ (𝑂 ∈ Cat ∧ 𝑃 ∈ Cat))) |
| 21 | 20 | biimprd 249 | . . . . 5 ⊢ (𝜑 → ((𝑂 ∈ Cat ∧ 𝑃 ∈ Cat) → (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat))) |
| 22 | 5 | elmpocl 7597 | . . . . 5 ⊢ (𝑥 ∈ (𝑂𝐹𝑃) → (𝑂 ∈ Cat ∧ 𝑃 ∈ Cat)) |
| 23 | 21, 22 | impel 510 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑂𝐹𝑃)) → (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) |
| 24 | simplr 774 | . . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝑂𝐹𝑃)) ∧ (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) → 𝑥 ∈ (𝑂𝐹𝑃)) | |
| 25 | 10 | adantlr 721 | . . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝑂𝐹𝑃)) ∧ (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) → ( oppFunc ‘(𝐶𝐹𝐷)) = (𝑂𝐹𝑃)) |
| 26 | 24, 25 | eleqtrrd 2842 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝑂𝐹𝑃)) ∧ (𝐶 ∈ Cat ∧ 𝐷 ∈ Cat)) → 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) |
| 27 | 23, 26 | mpdan 693 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑂𝐹𝑃)) → 𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷))) |
| 28 | 13, 27 | impbida 806 | . 2 ⊢ (𝜑 → (𝑥 ∈ ( oppFunc ‘(𝐶𝐹𝐷)) ↔ 𝑥 ∈ (𝑂𝐹𝑃))) |
| 29 | 28 | eqrdv 2737 | 1 ⊢ (𝜑 → ( oppFunc ‘(𝐶𝐹𝐷)) = (𝑂𝐹𝑃)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 ∈ wcel 2119 ≠ wne 2934 ∅c0 4261 dom cdm 5618 Rel wrel 5623 ‘cfv 6485 (class class class)co 7356 ∈ cmpo 7358 2nd c2nd 7930 Catccat 17621 oppCatcoppc 17668 oppFunc coppf 49612 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-tpos 8166 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-z 12516 df-dec 12636 df-sets 17125 df-slot 17143 df-ndx 17155 df-base 17171 df-hom 17235 df-cco 17236 df-cat 17625 df-cid 17626 df-homf 17627 df-comf 17628 df-oppc 17669 df-oppf 49613 |
| This theorem is referenced by: oppc1stf 49778 oppc2ndf 49779 |
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