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| Mirrors > Home > MPE Home > Th. List > oppchomfval | Structured version Visualization version GIF version | ||
| Description: Hom-sets of the opposite category. (Contributed by Mario Carneiro, 2-Jan-2017.) (Proof shortened by AV, 14-Oct-2024.) |
| Ref | Expression |
|---|---|
| oppchom.h | ⊢ 𝐻 = (Hom ‘𝐶) |
| oppchom.o | ⊢ 𝑂 = (oppCat‘𝐶) |
| Ref | Expression |
|---|---|
| oppchomfval | ⊢ tpos 𝐻 = (Hom ‘𝑂) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | homid 17576 | . . . 4 ⊢ Hom = Slot (Hom ‘ndx) | |
| 2 | slotsbhcdif 17579 | . . . . 5 ⊢ ((Base‘ndx) ≠ (Hom ‘ndx) ∧ (Base‘ndx) ≠ (comp‘ndx) ∧ (Hom ‘ndx) ≠ (comp‘ndx)) | |
| 3 | 2 | simp3i 1159 | . . . 4 ⊢ (Hom ‘ndx) ≠ (comp‘ndx) |
| 4 | 1, 3 | setsnid 17379 | . . 3 ⊢ (Hom ‘(𝐶 sSet 〈(Hom ‘ndx), tpos 𝐻〉)) = (Hom ‘((𝐶 sSet 〈(Hom ‘ndx), tpos 𝐻〉) sSet 〈(comp‘ndx), (𝑢 ∈ ((Base‘𝐶) × (Base‘𝐶)), 𝑧 ∈ (Base‘𝐶) ↦ tpos (〈𝑧, (2nd ‘𝑢)〉(comp‘𝐶)(1st ‘𝑢)))〉)) |
| 5 | oppchom.h | . . . . . 6 ⊢ 𝐻 = (Hom ‘𝐶) | |
| 6 | 5 | fvexi 6897 | . . . . 5 ⊢ 𝐻 ∈ V |
| 7 | 6 | tposex 8270 | . . . 4 ⊢ tpos 𝐻 ∈ V |
| 8 | 1 | setsid 17378 | . . . 4 ⊢ ((𝐶 ∈ V ∧ tpos 𝐻 ∈ V) → tpos 𝐻 = (Hom ‘(𝐶 sSet 〈(Hom ‘ndx), tpos 𝐻〉))) |
| 9 | 7, 8 | mpan2 704 | . . 3 ⊢ (𝐶 ∈ V → tpos 𝐻 = (Hom ‘(𝐶 sSet 〈(Hom ‘ndx), tpos 𝐻〉))) |
| 10 | eqid 2761 | . . . . 5 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 11 | eqid 2761 | . . . . 5 ⊢ (comp‘𝐶) = (comp‘𝐶) | |
| 12 | oppchom.o | . . . . 5 ⊢ 𝑂 = (oppCat‘𝐶) | |
| 13 | 10, 5, 11, 12 | oppcval 17880 | . . . 4 ⊢ (𝐶 ∈ V → 𝑂 = ((𝐶 sSet 〈(Hom ‘ndx), tpos 𝐻〉) sSet 〈(comp‘ndx), (𝑢 ∈ ((Base‘𝐶) × (Base‘𝐶)), 𝑧 ∈ (Base‘𝐶) ↦ tpos (〈𝑧, (2nd ‘𝑢)〉(comp‘𝐶)(1st ‘𝑢)))〉)) |
| 14 | 13 | fveq2d 6887 | . . 3 ⊢ (𝐶 ∈ V → (Hom ‘𝑂) = (Hom ‘((𝐶 sSet 〈(Hom ‘ndx), tpos 𝐻〉) sSet 〈(comp‘ndx), (𝑢 ∈ ((Base‘𝐶) × (Base‘𝐶)), 𝑧 ∈ (Base‘𝐶) ↦ tpos (〈𝑧, (2nd ‘𝑢)〉(comp‘𝐶)(1st ‘𝑢)))〉))) |
| 15 | 4, 9, 14 | 3eqtr4a 2822 | . 2 ⊢ (𝐶 ∈ V → tpos 𝐻 = (Hom ‘𝑂)) |
| 16 | tpos0 8266 | . . 3 ⊢ tpos ∅ = ∅ | |
| 17 | fvprc 6875 | . . . . 5 ⊢ (¬ 𝐶 ∈ V → (Hom ‘𝐶) = ∅) | |
| 18 | 5, 17 | eqtrid 2808 | . . . 4 ⊢ (¬ 𝐶 ∈ V → 𝐻 = ∅) |
| 19 | 18 | tposeqd 8239 | . . 3 ⊢ (¬ 𝐶 ∈ V → tpos 𝐻 = tpos ∅) |
| 20 | fvprc 6875 | . . . . . 6 ⊢ (¬ 𝐶 ∈ V → (oppCat‘𝐶) = ∅) | |
| 21 | 12, 20 | eqtrid 2808 | . . . . 5 ⊢ (¬ 𝐶 ∈ V → 𝑂 = ∅) |
| 22 | 21 | fveq2d 6887 | . . . 4 ⊢ (¬ 𝐶 ∈ V → (Hom ‘𝑂) = (Hom ‘∅)) |
| 23 | 1 | str0 17360 | . . . 4 ⊢ ∅ = (Hom ‘∅) |
| 24 | 22, 23 | eqtr4di 2814 | . . 3 ⊢ (¬ 𝐶 ∈ V → (Hom ‘𝑂) = ∅) |
| 25 | 16, 19, 24 | 3eqtr4a 2822 | . 2 ⊢ (¬ 𝐶 ∈ V → tpos 𝐻 = (Hom ‘𝑂)) |
| 26 | 15, 25 | pm2.61i 184 | 1 ⊢ tpos 𝐻 = (Hom ‘𝑂) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 = wceq 1570 ∈ wcel 2145 ≠ wne 2956 Vcvv 3451 ∅c0 4279 〈cop 4590 × cxp 5649 ‘cfv 6537 (class class class)co 7418 ∈ cmpo 7420 1st c1st 7997 2nd c2nd 7998 tpos ctpos 8235 sSet csts 17334 ndxcnx 17364 Basecbs 17380 Hom chom 17432 compcco 17433 oppCatcoppc 17878 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-cnex 11249 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-om 7876 df-2nd 8000 df-tpos 8236 df-frecs 8292 df-wrecs 8323 df-recs 8372 df-rdg 8411 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 df-nn 12329 df-2 12398 df-3 12399 df-4 12400 df-5 12401 df-6 12402 df-7 12403 df-8 12404 df-9 12405 df-n0 12600 df-z 12687 df-dec 12808 df-sets 17335 df-slot 17353 df-ndx 17365 df-base 17381 df-hom 17445 df-cco 17446 df-oppc 17879 |
| This theorem is used by: oppchom 17882 |
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