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| Mirrors > Home > MPE Home > Th. List > Mathboxes > funcoppc5 | Structured version Visualization version GIF version | ||
| Description: A functor on opposite categories yields a functor on the original categories. (Contributed by Zhi Wang, 14-Nov-2025.) |
| Ref | Expression |
|---|---|
| funcoppc2.o | ⊢ 𝑂 = (oppCat‘𝐶) |
| funcoppc2.p | ⊢ 𝑃 = (oppCat‘𝐷) |
| funcoppc2.c | ⊢ (𝜑 → 𝐶 ∈ 𝑉) |
| funcoppc2.d | ⊢ (𝜑 → 𝐷 ∈ 𝑊) |
| funcoppc5.f | ⊢ (𝜑 → ( oppFunc ‘𝐹) ∈ (𝑂 Func 𝑃)) |
| Ref | Expression |
|---|---|
| funcoppc5 | ⊢ (𝜑 → 𝐹 ∈ (𝐶 Func 𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funcoppc5.f | . . . 4 ⊢ (𝜑 → ( oppFunc ‘𝐹) ∈ (𝑂 Func 𝑃)) | |
| 2 | relfunc 17897 | . . . 4 ⊢ Rel (𝑂 Func 𝑃) | |
| 3 | eqid 2764 | . . . 4 ⊢ ( oppFunc ‘𝐹) = ( oppFunc ‘𝐹) | |
| 4 | 1, 2, 3 | oppfrcl 49754 | . . 3 ⊢ (𝜑 → 𝐹 ∈ (V × V)) |
| 5 | 1st2nd2 8011 | . . 3 ⊢ (𝐹 ∈ (V × V) → 𝐹 = 〈(1st ‘𝐹), (2nd ‘𝐹)〉) | |
| 6 | 4, 5 | syl 17 | . 2 ⊢ (𝜑 → 𝐹 = 〈(1st ‘𝐹), (2nd ‘𝐹)〉) |
| 7 | funcoppc2.o | . . . 4 ⊢ 𝑂 = (oppCat‘𝐶) | |
| 8 | funcoppc2.p | . . . 4 ⊢ 𝑃 = (oppCat‘𝐷) | |
| 9 | funcoppc2.c | . . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝑉) | |
| 10 | funcoppc2.d | . . . 4 ⊢ (𝜑 → 𝐷 ∈ 𝑊) | |
| 11 | 6 | fveq2d 6873 | . . . . . 6 ⊢ (𝜑 → ( oppFunc ‘𝐹) = ( oppFunc ‘〈(1st ‘𝐹), (2nd ‘𝐹)〉)) |
| 12 | df-ov 7401 | . . . . . 6 ⊢ ((1st ‘𝐹) oppFunc (2nd ‘𝐹)) = ( oppFunc ‘〈(1st ‘𝐹), (2nd ‘𝐹)〉) | |
| 13 | 11, 12 | eqtr4di 2817 | . . . . 5 ⊢ (𝜑 → ( oppFunc ‘𝐹) = ((1st ‘𝐹) oppFunc (2nd ‘𝐹))) |
| 14 | 13, 1 | eqeltrrd 2865 | . . . 4 ⊢ (𝜑 → ((1st ‘𝐹) oppFunc (2nd ‘𝐹)) ∈ (𝑂 Func 𝑃)) |
| 15 | 7, 8, 9, 10, 14 | funcoppc4 49770 | . . 3 ⊢ (𝜑 → (1st ‘𝐹)(𝐶 Func 𝐷)(2nd ‘𝐹)) |
| 16 | df-br 5103 | . . 3 ⊢ ((1st ‘𝐹)(𝐶 Func 𝐷)(2nd ‘𝐹) ↔ 〈(1st ‘𝐹), (2nd ‘𝐹)〉 ∈ (𝐶 Func 𝐷)) | |
| 17 | 15, 16 | sylib 220 | . 2 ⊢ (𝜑 → 〈(1st ‘𝐹), (2nd ‘𝐹)〉 ∈ (𝐶 Func 𝐷)) |
| 18 | 6, 17 | eqeltrd 2864 | 1 ⊢ (𝜑 → 𝐹 ∈ (𝐶 Func 𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1562 ∈ wcel 2144 Vcvv 3456 〈cop 4590 class class class wbr 5102 × cxp 5647 ‘cfv 6523 (class class class)co 7398 1st c1st 7970 2nd c2nd 7971 oppCatcoppc 17745 Func cfunc 17889 oppFunc coppf 49748 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2214 ax-ext 2736 ax-rep 5229 ax-sep 5248 ax-nul 5258 ax-pow 5324 ax-pr 5392 ax-un 7720 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3458 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5544 df-eprel 5549 df-po 5557 df-so 5558 df-fr 5602 df-we 5604 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-res 5661 df-ima 5662 df-pred 6290 df-ord 6351 df-on 6352 df-lim 6353 df-suc 6354 df-iota 6479 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 df-riota 7355 df-ov 7401 df-oprab 7402 df-mpo 7403 df-om 7849 df-1st 7972 df-2nd 7973 df-tpos 8208 df-frecs 8264 df-wrecs 8295 df-recs 8344 df-rdg 8383 df-er 8680 df-map 8812 df-ixp 8882 df-en 8930 df-dom 8931 df-sdom 8932 df-pnf 11220 df-mnf 11221 df-xr 11222 df-ltxr 11223 df-le 11224 df-sub 11418 df-neg 11419 df-nn 12213 df-2 12282 df-3 12283 df-4 12284 df-5 12285 df-6 12286 df-7 12287 df-8 12288 df-9 12289 df-n0 12484 df-z 12571 df-dec 12691 df-sets 17202 df-slot 17220 df-ndx 17232 df-base 17248 df-hom 17312 df-cco 17313 df-cat 17702 df-cid 17703 df-homf 17704 df-comf 17705 df-oppc 17746 df-func 17893 df-oppf 49749 |
| This theorem is referenced by: oppfuprcl 49830 natoppfb 49857 lmddu 50293 cmddu 50294 |
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