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Mirrors > Home > MPE Home > Th. List > Mathboxes > oppctermhom | Structured version Visualization version GIF version |
Description: The opposite category of a terminal category has the same base and hom-sets as the original category. (Contributed by Zhi Wang, 16-Oct-2025.) |
Ref | Expression |
---|---|
oppcterm.o | ⊢ 𝑂 = (oppCat‘𝐶) |
oppcterm.c | ⊢ (𝜑 → 𝐶 ∈ TermCat) |
Ref | Expression |
---|---|
oppctermhom | ⊢ (𝜑 → (Homf ‘𝐶) = (Homf ‘𝑂)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | oppcterm.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ TermCat) | |
2 | eqid 2736 | . . 3 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
3 | 1, 2 | termcbas 49100 | . 2 ⊢ (𝜑 → ∃𝑥(Base‘𝐶) = {𝑥}) |
4 | oppcterm.o | . . . 4 ⊢ 𝑂 = (oppCat‘𝐶) | |
5 | id 22 | . . . 4 ⊢ ((Base‘𝐶) = {𝑥} → (Base‘𝐶) = {𝑥}) | |
6 | 4, 2, 5 | oppcmndc 48880 | . . 3 ⊢ ((Base‘𝐶) = {𝑥} → (Homf ‘𝐶) = (Homf ‘𝑂)) |
7 | 6 | exlimiv 1930 | . 2 ⊢ (∃𝑥(Base‘𝐶) = {𝑥} → (Homf ‘𝐶) = (Homf ‘𝑂)) |
8 | 3, 7 | syl 17 | 1 ⊢ (𝜑 → (Homf ‘𝐶) = (Homf ‘𝑂)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1540 ∃wex 1779 ∈ wcel 2108 {csn 4624 ‘cfv 6559 Basecbs 17243 Homf chomf 17705 oppCatcoppc 17750 TermCatctermc 49092 |
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 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5277 ax-sep 5294 ax-nul 5304 ax-pow 5363 ax-pr 5430 ax-un 7751 ax-cnex 11207 ax-resscn 11208 ax-1cn 11209 ax-icn 11210 ax-addcl 11211 ax-addrcl 11212 ax-mulcl 11213 ax-mulrcl 11214 ax-mulcom 11215 ax-addass 11216 ax-mulass 11217 ax-distr 11218 ax-i2m1 11219 ax-1ne0 11220 ax-1rid 11221 ax-rnegex 11222 ax-rrecex 11223 ax-cnre 11224 ax-pre-lttri 11225 ax-pre-lttrn 11226 ax-pre-ltadd 11227 ax-pre-mulgt0 11228 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2728 df-clel 2815 df-nfc 2891 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3379 df-reu 3380 df-rab 3436 df-v 3481 df-sbc 3788 df-csb 3899 df-dif 3953 df-un 3955 df-in 3957 df-ss 3967 df-pss 3970 df-nul 4333 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-op 4631 df-uni 4906 df-iun 4991 df-br 5142 df-opab 5204 df-mpt 5224 df-tr 5258 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5635 df-we 5637 df-xp 5689 df-rel 5690 df-cnv 5691 df-co 5692 df-dm 5693 df-rn 5694 df-res 5695 df-ima 5696 df-pred 6319 df-ord 6385 df-on 6386 df-lim 6387 df-suc 6388 df-iota 6512 df-fun 6561 df-fn 6562 df-f 6563 df-f1 6564 df-fo 6565 df-f1o 6566 df-fv 6567 df-riota 7386 df-ov 7432 df-oprab 7433 df-mpo 7434 df-om 7884 df-1st 8010 df-2nd 8011 df-tpos 8247 df-frecs 8302 df-wrecs 8333 df-recs 8407 df-rdg 8446 df-er 8741 df-en 8982 df-dom 8983 df-sdom 8984 df-pnf 11293 df-mnf 11294 df-xr 11295 df-ltxr 11296 df-le 11297 df-sub 11490 df-neg 11491 df-nn 12263 df-2 12325 df-3 12326 df-4 12327 df-5 12328 df-6 12329 df-7 12330 df-8 12331 df-9 12332 df-n0 12523 df-z 12610 df-dec 12730 df-sets 17197 df-slot 17215 df-ndx 17227 df-base 17244 df-hom 17317 df-cco 17318 df-homf 17709 df-oppc 17751 df-termc 49093 |
This theorem is referenced by: oppctermco 49110 oppcterm 49111 |
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