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Mirrors > Home > MPE Home > Th. List > fthoppc | Structured version Visualization version GIF version |
Description: The opposite functor of a faithful functor is also faithful. Proposition 3.43(c) in [Adamek] p. 39. (Contributed by Mario Carneiro, 27-Jan-2017.) |
Ref | Expression |
---|---|
fulloppc.o | ⊢ 𝑂 = (oppCat‘𝐶) |
fulloppc.p | ⊢ 𝑃 = (oppCat‘𝐷) |
fthoppc.f | ⊢ (𝜑 → 𝐹(𝐶 Faith 𝐷)𝐺) |
Ref | Expression |
---|---|
fthoppc | ⊢ (𝜑 → 𝐹(𝑂 Faith 𝑃)tpos 𝐺) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fulloppc.o | . . 3 ⊢ 𝑂 = (oppCat‘𝐶) | |
2 | fulloppc.p | . . 3 ⊢ 𝑃 = (oppCat‘𝐷) | |
3 | fthoppc.f | . . . 4 ⊢ (𝜑 → 𝐹(𝐶 Faith 𝐷)𝐺) | |
4 | fthfunc 17177 | . . . . 5 ⊢ (𝐶 Faith 𝐷) ⊆ (𝐶 Func 𝐷) | |
5 | 4 | ssbri 5111 | . . . 4 ⊢ (𝐹(𝐶 Faith 𝐷)𝐺 → 𝐹(𝐶 Func 𝐷)𝐺) |
6 | 3, 5 | syl 17 | . . 3 ⊢ (𝜑 → 𝐹(𝐶 Func 𝐷)𝐺) |
7 | 1, 2, 6 | funcoppc 17145 | . 2 ⊢ (𝜑 → 𝐹(𝑂 Func 𝑃)tpos 𝐺) |
8 | eqid 2821 | . . . . . 6 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
9 | eqid 2821 | . . . . . 6 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
10 | eqid 2821 | . . . . . 6 ⊢ (Hom ‘𝐷) = (Hom ‘𝐷) | |
11 | 3 | adantr 483 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → 𝐹(𝐶 Faith 𝐷)𝐺) |
12 | simprr 771 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → 𝑦 ∈ (Base‘𝐶)) | |
13 | simprl 769 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → 𝑥 ∈ (Base‘𝐶)) | |
14 | 8, 9, 10, 11, 12, 13 | fthf1 17187 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → (𝑦𝐺𝑥):(𝑦(Hom ‘𝐶)𝑥)–1-1→((𝐹‘𝑦)(Hom ‘𝐷)(𝐹‘𝑥))) |
15 | df-f1 6360 | . . . . . 6 ⊢ ((𝑦𝐺𝑥):(𝑦(Hom ‘𝐶)𝑥)–1-1→((𝐹‘𝑦)(Hom ‘𝐷)(𝐹‘𝑥)) ↔ ((𝑦𝐺𝑥):(𝑦(Hom ‘𝐶)𝑥)⟶((𝐹‘𝑦)(Hom ‘𝐷)(𝐹‘𝑥)) ∧ Fun ◡(𝑦𝐺𝑥))) | |
16 | 15 | simprbi 499 | . . . . 5 ⊢ ((𝑦𝐺𝑥):(𝑦(Hom ‘𝐶)𝑥)–1-1→((𝐹‘𝑦)(Hom ‘𝐷)(𝐹‘𝑥)) → Fun ◡(𝑦𝐺𝑥)) |
17 | 14, 16 | syl 17 | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → Fun ◡(𝑦𝐺𝑥)) |
18 | ovtpos 7907 | . . . . . 6 ⊢ (𝑥tpos 𝐺𝑦) = (𝑦𝐺𝑥) | |
19 | 18 | cnveqi 5745 | . . . . 5 ⊢ ◡(𝑥tpos 𝐺𝑦) = ◡(𝑦𝐺𝑥) |
20 | 19 | funeqi 6376 | . . . 4 ⊢ (Fun ◡(𝑥tpos 𝐺𝑦) ↔ Fun ◡(𝑦𝐺𝑥)) |
21 | 17, 20 | sylibr 236 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → Fun ◡(𝑥tpos 𝐺𝑦)) |
22 | 21 | ralrimivva 3191 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ (Base‘𝐶)∀𝑦 ∈ (Base‘𝐶)Fun ◡(𝑥tpos 𝐺𝑦)) |
23 | 1, 8 | oppcbas 16988 | . . 3 ⊢ (Base‘𝐶) = (Base‘𝑂) |
24 | 23 | isfth 17184 | . 2 ⊢ (𝐹(𝑂 Faith 𝑃)tpos 𝐺 ↔ (𝐹(𝑂 Func 𝑃)tpos 𝐺 ∧ ∀𝑥 ∈ (Base‘𝐶)∀𝑦 ∈ (Base‘𝐶)Fun ◡(𝑥tpos 𝐺𝑦))) |
25 | 7, 22, 24 | sylanbrc 585 | 1 ⊢ (𝜑 → 𝐹(𝑂 Faith 𝑃)tpos 𝐺) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1537 ∈ wcel 2114 ∀wral 3138 class class class wbr 5066 ◡ccnv 5554 Fun wfun 6349 ⟶wf 6351 –1-1→wf1 6352 ‘cfv 6355 (class class class)co 7156 tpos ctpos 7891 Basecbs 16483 Hom chom 16576 oppCatcoppc 16981 Func cfunc 17124 Faith cfth 17173 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-rep 5190 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 ax-cnex 10593 ax-resscn 10594 ax-1cn 10595 ax-icn 10596 ax-addcl 10597 ax-addrcl 10598 ax-mulcl 10599 ax-mulrcl 10600 ax-mulcom 10601 ax-addass 10602 ax-mulass 10603 ax-distr 10604 ax-i2m1 10605 ax-1ne0 10606 ax-1rid 10607 ax-rnegex 10608 ax-rrecex 10609 ax-cnre 10610 ax-pre-lttri 10611 ax-pre-lttrn 10612 ax-pre-ltadd 10613 ax-pre-mulgt0 10614 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 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-rmo 3146 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4839 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-tr 5173 df-id 5460 df-eprel 5465 df-po 5474 df-so 5475 df-fr 5514 df-we 5516 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-pred 6148 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7581 df-1st 7689 df-2nd 7690 df-tpos 7892 df-wrecs 7947 df-recs 8008 df-rdg 8046 df-er 8289 df-map 8408 df-ixp 8462 df-en 8510 df-dom 8511 df-sdom 8512 df-pnf 10677 df-mnf 10678 df-xr 10679 df-ltxr 10680 df-le 10681 df-sub 10872 df-neg 10873 df-nn 11639 df-2 11701 df-3 11702 df-4 11703 df-5 11704 df-6 11705 df-7 11706 df-8 11707 df-9 11708 df-n0 11899 df-z 11983 df-dec 12100 df-ndx 16486 df-slot 16487 df-base 16489 df-sets 16490 df-hom 16589 df-cco 16590 df-cat 16939 df-cid 16940 df-oppc 16982 df-func 17128 df-fth 17175 |
This theorem is referenced by: ffthoppc 17194 fthepi 17198 |
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