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| Mirrors > Home > MPE Home > Th. List > Mathboxes > funcoppc3 | Structured version Visualization version GIF version | ||
| Description: A functor on opposite categories yields a functor on the original categories. (Contributed by Zhi Wang, 4-Nov-2025.) |
| Ref | Expression |
|---|---|
| funcoppc2.o | ⊢ 𝑂 = (oppCat‘𝐶) |
| funcoppc2.p | ⊢ 𝑃 = (oppCat‘𝐷) |
| funcoppc2.c | ⊢ (𝜑 → 𝐶 ∈ 𝑉) |
| funcoppc2.d | ⊢ (𝜑 → 𝐷 ∈ 𝑊) |
| funcoppc3.f | ⊢ (𝜑 → 𝐹(𝑂 Func 𝑃)tpos 𝐺) |
| funcoppc3.g | ⊢ (𝜑 → 𝐺 Fn (𝐴 × 𝐵)) |
| Ref | Expression |
|---|---|
| funcoppc3 | ⊢ (𝜑 → 𝐹(𝐶 Func 𝐷)𝐺) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funcoppc2.o | . . 3 ⊢ 𝑂 = (oppCat‘𝐶) | |
| 2 | funcoppc2.p | . . 3 ⊢ 𝑃 = (oppCat‘𝐷) | |
| 3 | funcoppc2.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ 𝑉) | |
| 4 | funcoppc2.d | . . 3 ⊢ (𝜑 → 𝐷 ∈ 𝑊) | |
| 5 | funcoppc3.f | . . 3 ⊢ (𝜑 → 𝐹(𝑂 Func 𝑃)tpos 𝐺) | |
| 6 | 1, 2, 3, 4, 5 | funcoppc2 49949 | . 2 ⊢ (𝜑 → 𝐹(𝐶 Func 𝐷)tpos tpos 𝐺) |
| 7 | funcoppc3.g | . . . 4 ⊢ (𝜑 → 𝐺 Fn (𝐴 × 𝐵)) | |
| 8 | fnrel 6637 | . . . 4 ⊢ (𝐺 Fn (𝐴 × 𝐵) → Rel 𝐺) | |
| 9 | 7, 8 | syl 18 | . . 3 ⊢ (𝜑 → Rel 𝐺) |
| 10 | relxp 5678 | . . . 4 ⊢ Rel (𝐴 × 𝐵) | |
| 11 | 7 | fndmd 6640 | . . . . 5 ⊢ (𝜑 → dom 𝐺 = (𝐴 × 𝐵)) |
| 12 | 11 | releqd 5764 | . . . 4 ⊢ (𝜑 → (Rel dom 𝐺 ↔ Rel (𝐴 × 𝐵))) |
| 13 | 10, 12 | mpbiri 261 | . . 3 ⊢ (𝜑 → Rel dom 𝐺) |
| 14 | tpostpos2 8241 | . . 3 ⊢ ((Rel 𝐺 ∧ Rel dom 𝐺) → tpos tpos 𝐺 = 𝐺) | |
| 15 | 9, 13, 14 | syl2anc 595 | . 2 ⊢ (𝜑 → tpos tpos 𝐺 = 𝐺) |
| 16 | 6, 15 | breqtrd 5136 | 1 ⊢ (𝜑 → 𝐹(𝐶 Func 𝐷)𝐺) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2142 class class class wbr 5108 × cxp 5658 dom cdm 5660 Rel wrel 5665 Fn wfn 6531 ‘cfv 6536 (class class class)co 7412 tpos ctpos 8219 oppCatcoppc 17773 Func cfunc 17917 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 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 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-1st 7984 df-2nd 7985 df-tpos 8220 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-er 8692 df-map 8824 df-ixp 8894 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-nn 12240 df-2 12309 df-3 12310 df-4 12311 df-5 12312 df-6 12313 df-7 12314 df-8 12315 df-9 12316 df-n0 12511 df-z 12598 df-dec 12718 df-sets 17230 df-slot 17248 df-ndx 17260 df-base 17276 df-hom 17340 df-cco 17341 df-cat 17730 df-cid 17731 df-homf 17732 df-comf 17733 df-oppc 17774 df-func 17921 |
| This theorem is used by: (None) |
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