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Mirrors > Home > MPE Home > Th. List > 2oppchomf | Structured version Visualization version GIF version |
Description: The double opposite category has the same morphisms as the original category. Intended for use with property lemmas such as monpropd 17006. (Contributed by Mario Carneiro, 3-Jan-2017.) |
Ref | Expression |
---|---|
oppcbas.1 | ⊢ 𝑂 = (oppCat‘𝐶) |
Ref | Expression |
---|---|
2oppchomf | ⊢ (Homf ‘𝐶) = (Homf ‘(oppCat‘𝑂)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2821 | . . . . 5 ⊢ (Homf ‘𝐶) = (Homf ‘𝐶) | |
2 | eqid 2821 | . . . . 5 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
3 | 1, 2 | homffn 16962 | . . . 4 ⊢ (Homf ‘𝐶) Fn ((Base‘𝐶) × (Base‘𝐶)) |
4 | fnrel 6453 | . . . 4 ⊢ ((Homf ‘𝐶) Fn ((Base‘𝐶) × (Base‘𝐶)) → Rel (Homf ‘𝐶)) | |
5 | 3, 4 | ax-mp 5 | . . 3 ⊢ Rel (Homf ‘𝐶) |
6 | relxp 5572 | . . . 4 ⊢ Rel ((Base‘𝐶) × (Base‘𝐶)) | |
7 | fndm 6454 | . . . . . 6 ⊢ ((Homf ‘𝐶) Fn ((Base‘𝐶) × (Base‘𝐶)) → dom (Homf ‘𝐶) = ((Base‘𝐶) × (Base‘𝐶))) | |
8 | 3, 7 | ax-mp 5 | . . . . 5 ⊢ dom (Homf ‘𝐶) = ((Base‘𝐶) × (Base‘𝐶)) |
9 | 8 | releqi 5651 | . . . 4 ⊢ (Rel dom (Homf ‘𝐶) ↔ Rel ((Base‘𝐶) × (Base‘𝐶))) |
10 | 6, 9 | mpbir 233 | . . 3 ⊢ Rel dom (Homf ‘𝐶) |
11 | tpostpos2 7912 | . . 3 ⊢ ((Rel (Homf ‘𝐶) ∧ Rel dom (Homf ‘𝐶)) → tpos tpos (Homf ‘𝐶) = (Homf ‘𝐶)) | |
12 | 5, 10, 11 | mp2an 690 | . 2 ⊢ tpos tpos (Homf ‘𝐶) = (Homf ‘𝐶) |
13 | eqid 2821 | . . 3 ⊢ (oppCat‘𝑂) = (oppCat‘𝑂) | |
14 | oppcbas.1 | . . . 4 ⊢ 𝑂 = (oppCat‘𝐶) | |
15 | 14, 1 | oppchomf 16989 | . . 3 ⊢ tpos (Homf ‘𝐶) = (Homf ‘𝑂) |
16 | 13, 15 | oppchomf 16989 | . 2 ⊢ tpos tpos (Homf ‘𝐶) = (Homf ‘(oppCat‘𝑂)) |
17 | 12, 16 | eqtr3i 2846 | 1 ⊢ (Homf ‘𝐶) = (Homf ‘(oppCat‘𝑂)) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1533 × cxp 5552 dom cdm 5554 Rel wrel 5559 Fn wfn 6349 ‘cfv 6354 tpos ctpos 7890 Basecbs 16482 Homf chomf 16936 oppCatcoppc 16980 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-rep 5189 ax-sep 5202 ax-nul 5209 ax-pow 5265 ax-pr 5329 ax-un 7460 ax-cnex 10592 ax-resscn 10593 ax-1cn 10594 ax-icn 10595 ax-addcl 10596 ax-addrcl 10597 ax-mulcl 10598 ax-mulrcl 10599 ax-mulcom 10600 ax-addass 10601 ax-mulass 10602 ax-distr 10603 ax-i2m1 10604 ax-1ne0 10605 ax-1rid 10606 ax-rnegex 10607 ax-rrecex 10608 ax-cnre 10609 ax-pre-lttri 10610 ax-pre-lttrn 10611 ax-pre-ltadd 10612 ax-pre-mulgt0 10613 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-pss 3953 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4838 df-iun 4920 df-br 5066 df-opab 5128 df-mpt 5146 df-tr 5172 df-id 5459 df-eprel 5464 df-po 5473 df-so 5474 df-fr 5513 df-we 5515 df-xp 5560 df-rel 5561 df-cnv 5562 df-co 5563 df-dm 5564 df-rn 5565 df-res 5566 df-ima 5567 df-pred 6147 df-ord 6193 df-on 6194 df-lim 6195 df-suc 6196 df-iota 6313 df-fun 6356 df-fn 6357 df-f 6358 df-f1 6359 df-fo 6360 df-f1o 6361 df-fv 6362 df-riota 7113 df-ov 7158 df-oprab 7159 df-mpo 7160 df-om 7580 df-1st 7688 df-2nd 7689 df-tpos 7891 df-wrecs 7946 df-recs 8007 df-rdg 8045 df-er 8288 df-en 8509 df-dom 8510 df-sdom 8511 df-pnf 10676 df-mnf 10677 df-xr 10678 df-ltxr 10679 df-le 10680 df-sub 10871 df-neg 10872 df-nn 11638 df-2 11699 df-3 11700 df-4 11701 df-5 11702 df-6 11703 df-7 11704 df-8 11705 df-9 11706 df-n0 11897 df-z 11981 df-dec 12098 df-ndx 16485 df-slot 16486 df-base 16488 df-sets 16489 df-hom 16588 df-cco 16589 df-homf 16940 df-oppc 16981 |
This theorem is referenced by: 2oppccomf 16994 oppcepi 17008 oppchofcl 17509 oppcyon 17518 oyoncl 17519 |
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