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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 17804. (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 2766 | . . . . 5 ⊢ (Homf ‘𝐶) = (Homf ‘𝐶) | |
| 2 | eqid 2766 | . . . . 5 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 3 | 1, 2 | homffn 17759 | . . . 4 ⊢ (Homf ‘𝐶) Fn ((Base‘𝐶) × (Base‘𝐶)) |
| 4 | fnrel 6641 | . . . 4 ⊢ ((Homf ‘𝐶) Fn ((Base‘𝐶) × (Base‘𝐶)) → Rel (Homf ‘𝐶)) | |
| 5 | 3, 4 | ax-mp 5 | . . 3 ⊢ Rel (Homf ‘𝐶) |
| 6 | relxp 5682 | . . . 4 ⊢ Rel ((Base‘𝐶) × (Base‘𝐶)) | |
| 7 | 3 | fndmi 6643 | . . . . 5 ⊢ dom (Homf ‘𝐶) = ((Base‘𝐶) × (Base‘𝐶)) |
| 8 | 7 | releqi 5767 | . . . 4 ⊢ (Rel dom (Homf ‘𝐶) ↔ Rel ((Base‘𝐶) × (Base‘𝐶))) |
| 9 | 6, 8 | mpbir 234 | . . 3 ⊢ Rel dom (Homf ‘𝐶) |
| 10 | tpostpos2 8245 | . . 3 ⊢ ((Rel (Homf ‘𝐶) ∧ Rel dom (Homf ‘𝐶)) → tpos tpos (Homf ‘𝐶) = (Homf ‘𝐶)) | |
| 11 | 5, 9, 10 | mp2an 705 | . 2 ⊢ tpos tpos (Homf ‘𝐶) = (Homf ‘𝐶) |
| 12 | eqid 2766 | . . 3 ⊢ (oppCat‘𝑂) = (oppCat‘𝑂) | |
| 13 | oppcbas.1 | . . . 4 ⊢ 𝑂 = (oppCat‘𝐶) | |
| 14 | 13, 1 | oppchomf 17786 | . . 3 ⊢ tpos (Homf ‘𝐶) = (Homf ‘𝑂) |
| 15 | 12, 14 | oppchomf 17786 | . 2 ⊢ tpos tpos (Homf ‘𝐶) = (Homf ‘(oppCat‘𝑂)) |
| 16 | 11, 15 | eqtr3i 2791 | 1 ⊢ (Homf ‘𝐶) = (Homf ‘(oppCat‘𝑂)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 × cxp 5662 dom cdm 5664 Rel wrel 5669 Fn wfn 6535 ‘cfv 6540 tpos ctpos 8223 Basecbs 17279 Homf chomf 17732 oppCatcoppc 17777 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5241 ax-sep 5260 ax-nul 5272 ax-pow 5339 ax-pr 5407 ax-un 7738 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187 |
| 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 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4491 df-pw 4567 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4876 df-iun 4961 df-br 5113 df-opab 5177 df-mpt 5196 df-tr 5222 df-id 5559 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-we 5619 df-xp 5670 df-rel 5671 df-cnv 5672 df-co 5673 df-dm 5674 df-rn 5675 df-res 5676 df-ima 5677 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7865 df-1st 7988 df-2nd 7989 df-tpos 8224 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-er 8696 df-en 8946 df-dom 8947 df-sdom 8948 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11453 df-neg 11454 df-nn 12244 df-2 12313 df-3 12314 df-4 12315 df-5 12316 df-6 12317 df-7 12318 df-8 12319 df-9 12320 df-n0 12515 df-z 12602 df-dec 12722 df-sets 17234 df-slot 17252 df-ndx 17264 df-base 17280 df-hom 17344 df-cco 17345 df-homf 17736 df-oppc 17778 |
| This theorem is used by: 2oppccomf 17791 oppcepi 17806 oppchofcl 18326 oppcyon 18335 oyoncl 18336 oppccatb 49826 oppccicb 49861 funcoppc2 49953 natoppfb 50041 cmddu 50478 termolmd 50480 |
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