mgccnv - Mathbox for Thierry Arnoux

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Theorem mgccnv 32739

Description: The inverse Galois connection is the Galois connection of the dual orders. (Contributed by Thierry Arnoux, 26-Apr-2024.)

**Hypotheses**
Ref	Expression
mgccnv.1	⊢ 𝐻 = (𝑉MGalConn𝑊)
mgccnv.2	⊢ 𝑀 = ((ODual‘𝑊)MGalConn(ODual‘𝑉))

**Assertion**
Ref	Expression
mgccnv	⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (𝐹𝐻𝐺 ↔ 𝐺𝑀𝐹))

Proof of Theorem mgccnv Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ancom 460	. . . 4 ⊢ ((𝐹:(Base‘𝑉)⟶(Base‘𝑊) ∧ 𝐺:(Base‘𝑊)⟶(Base‘𝑉)) ↔ (𝐺:(Base‘𝑊)⟶(Base‘𝑉) ∧ 𝐹:(Base‘𝑉)⟶(Base‘𝑊)))
2	1	a1i 11	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → ((𝐹:(Base‘𝑉)⟶(Base‘𝑊) ∧ 𝐺:(Base‘𝑊)⟶(Base‘𝑉)) ↔ (𝐺:(Base‘𝑊)⟶(Base‘𝑉) ∧ 𝐹:(Base‘𝑉)⟶(Base‘𝑊))))
3		ralcom 3283	. . . 4 ⊢ (∀𝑥 ∈ (Base‘𝑉)∀𝑦 ∈ (Base‘𝑊)((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦)) ↔ ∀𝑦 ∈ (Base‘𝑊)∀𝑥 ∈ (Base‘𝑉)((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦)))
4		bicom 221	. . . . . . 7 ⊢ (((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦)) ↔ (𝑥(le‘𝑉)(𝐺‘𝑦) ↔ (𝐹‘𝑥)(le‘𝑊)𝑦))
5		fvex 6910	. . . . . . . . . . 11 ⊢ (𝐺‘𝑦) ∈ V
6		vex 3475	. . . . . . . . . . 11 ⊢ 𝑥 ∈ V
7	5, 6	brcnv 5885	. . . . . . . . . 10 ⊢ ((𝐺‘𝑦)^◡(le‘𝑉)𝑥 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦))
8	7	bicomi 223	. . . . . . . . 9 ⊢ (𝑥(le‘𝑉)(𝐺‘𝑦) ↔ (𝐺‘𝑦)^◡(le‘𝑉)𝑥)
9	8	a1i 11	. . . . . . . 8 ⊢ ((((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) ∧ 𝑦 ∈ (Base‘𝑊)) ∧ 𝑥 ∈ (Base‘𝑉)) → (𝑥(le‘𝑉)(𝐺‘𝑦) ↔ (𝐺‘𝑦)^◡(le‘𝑉)𝑥))
10		vex 3475	. . . . . . . . . . 11 ⊢ 𝑦 ∈ V
11		fvex 6910	. . . . . . . . . . 11 ⊢ (𝐹‘𝑥) ∈ V
12	10, 11	brcnv 5885	. . . . . . . . . 10 ⊢ (𝑦^◡(le‘𝑊)(𝐹‘𝑥) ↔ (𝐹‘𝑥)(le‘𝑊)𝑦)
13	12	bicomi 223	. . . . . . . . 9 ⊢ ((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑦^◡(le‘𝑊)(𝐹‘𝑥))
14	13	a1i 11	. . . . . . . 8 ⊢ ((((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) ∧ 𝑦 ∈ (Base‘𝑊)) ∧ 𝑥 ∈ (Base‘𝑉)) → ((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑦^◡(le‘𝑊)(𝐹‘𝑥)))
15	9, 14	bibi12d 345	. . . . . . 7 ⊢ ((((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) ∧ 𝑦 ∈ (Base‘𝑊)) ∧ 𝑥 ∈ (Base‘𝑉)) → ((𝑥(le‘𝑉)(𝐺‘𝑦) ↔ (𝐹‘𝑥)(le‘𝑊)𝑦) ↔ ((𝐺‘𝑦)^◡(le‘𝑉)𝑥 ↔ 𝑦^◡(le‘𝑊)(𝐹‘𝑥))))
16	4, 15	bitrid 283	. . . . . 6 ⊢ ((((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) ∧ 𝑦 ∈ (Base‘𝑊)) ∧ 𝑥 ∈ (Base‘𝑉)) → (((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦)) ↔ ((𝐺‘𝑦)^◡(le‘𝑉)𝑥 ↔ 𝑦^◡(le‘𝑊)(𝐹‘𝑥))))
17	16	ralbidva 3172	. . . . 5 ⊢ (((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) ∧ 𝑦 ∈ (Base‘𝑊)) → (∀𝑥 ∈ (Base‘𝑉)((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦)) ↔ ∀𝑥 ∈ (Base‘𝑉)((𝐺‘𝑦)^◡(le‘𝑉)𝑥 ↔ 𝑦^◡(le‘𝑊)(𝐹‘𝑥))))
18	17	ralbidva 3172	. . . 4 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (∀𝑦 ∈ (Base‘𝑊)∀𝑥 ∈ (Base‘𝑉)((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦)) ↔ ∀𝑦 ∈ (Base‘𝑊)∀𝑥 ∈ (Base‘𝑉)((𝐺‘𝑦)^◡(le‘𝑉)𝑥 ↔ 𝑦^◡(le‘𝑊)(𝐹‘𝑥))))
19	3, 18	bitrid 283	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (∀𝑥 ∈ (Base‘𝑉)∀𝑦 ∈ (Base‘𝑊)((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦)) ↔ ∀𝑦 ∈ (Base‘𝑊)∀𝑥 ∈ (Base‘𝑉)((𝐺‘𝑦)^◡(le‘𝑉)𝑥 ↔ 𝑦^◡(le‘𝑊)(𝐹‘𝑥))))
20	2, 19	anbi12d 631	. 2 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (((𝐹:(Base‘𝑉)⟶(Base‘𝑊) ∧ 𝐺:(Base‘𝑊)⟶(Base‘𝑉)) ∧ ∀𝑥 ∈ (Base‘𝑉)∀𝑦 ∈ (Base‘𝑊)((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦))) ↔ ((𝐺:(Base‘𝑊)⟶(Base‘𝑉) ∧ 𝐹:(Base‘𝑉)⟶(Base‘𝑊)) ∧ ∀𝑦 ∈ (Base‘𝑊)∀𝑥 ∈ (Base‘𝑉)((𝐺‘𝑦)^◡(le‘𝑉)𝑥 ↔ 𝑦^◡(le‘𝑊)(𝐹‘𝑥)))))
21		eqid 2728	. . 3 ⊢ (Base‘𝑉) = (Base‘𝑉)
22		eqid 2728	. . 3 ⊢ (Base‘𝑊) = (Base‘𝑊)
23		eqid 2728	. . 3 ⊢ (le‘𝑉) = (le‘𝑉)
24		eqid 2728	. . 3 ⊢ (le‘𝑊) = (le‘𝑊)
25		mgccnv.1	. . 3 ⊢ 𝐻 = (𝑉MGalConn𝑊)
26		simpl 482	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → 𝑉 ∈ Proset )
27		simpr 484	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → 𝑊 ∈ Proset )
28	21, 22, 23, 24, 25, 26, 27	mgcval 32727	. 2 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (𝐹𝐻𝐺 ↔ ((𝐹:(Base‘𝑉)⟶(Base‘𝑊) ∧ 𝐺:(Base‘𝑊)⟶(Base‘𝑉)) ∧ ∀𝑥 ∈ (Base‘𝑉)∀𝑦 ∈ (Base‘𝑊)((𝐹‘𝑥)(le‘𝑊)𝑦 ↔ 𝑥(le‘𝑉)(𝐺‘𝑦)))))
29		eqid 2728	. . . 4 ⊢ (ODual‘𝑊) = (ODual‘𝑊)
30	29, 22	odubas 18283	. . 3 ⊢ (Base‘𝑊) = (Base‘(ODual‘𝑊))
31		eqid 2728	. . . 4 ⊢ (ODual‘𝑉) = (ODual‘𝑉)
32	31, 21	odubas 18283	. . 3 ⊢ (Base‘𝑉) = (Base‘(ODual‘𝑉))
33	29, 24	oduleval 18281	. . 3 ⊢ ^◡(le‘𝑊) = (le‘(ODual‘𝑊))
34	31, 23	oduleval 18281	. . 3 ⊢ ^◡(le‘𝑉) = (le‘(ODual‘𝑉))
35		mgccnv.2	. . 3 ⊢ 𝑀 = ((ODual‘𝑊)MGalConn(ODual‘𝑉))
36	29	oduprs 32704	. . . 4 ⊢ (𝑊 ∈ Proset → (ODual‘𝑊) ∈ Proset )
37	27, 36	syl 17	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (ODual‘𝑊) ∈ Proset )
38	31	oduprs 32704	. . . 4 ⊢ (𝑉 ∈ Proset → (ODual‘𝑉) ∈ Proset )
39	26, 38	syl 17	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (ODual‘𝑉) ∈ Proset )
40	30, 32, 33, 34, 35, 37, 39	mgcval 32727	. 2 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (𝐺𝑀𝐹 ↔ ((𝐺:(Base‘𝑊)⟶(Base‘𝑉) ∧ 𝐹:(Base‘𝑉)⟶(Base‘𝑊)) ∧ ∀𝑦 ∈ (Base‘𝑊)∀𝑥 ∈ (Base‘𝑉)((𝐺‘𝑦)^◡(le‘𝑉)𝑥 ↔ 𝑦^◡(le‘𝑊)(𝐹‘𝑥)))))
41	20, 28, 40	3bitr4d 311	1 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (𝐹𝐻𝐺 ↔ 𝐺𝑀𝐹))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1534 ∈ wcel 2099 ∀wral 3058 class class class wbr 5148 ^◡ccnv 5677 ⟶wf 6544 ‘cfv 6548 (class class class)co 7420 Basecbs 17180 lecple 17240 ODualcodu 18278 Proset cproset 18285 MGalConncmgc 32719

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740 ax-cnex 11195 ax-resscn 11196 ax-1cn 11197 ax-icn 11198 ax-addcl 11199 ax-addrcl 11200 ax-mulcl 11201 ax-mulrcl 11202 ax-mulcom 11203 ax-addass 11204 ax-mulass 11205 ax-distr 11206 ax-i2m1 11207 ax-1ne0 11208 ax-1rid 11209 ax-rnegex 11210 ax-rrecex 11211 ax-cnre 11212 ax-pre-lttri 11213 ax-pre-lttrn 11214 ax-pre-ltadd 11215 ax-pre-mulgt0 11216

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7376 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7871 df-2nd 7994 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-er 8725 df-map 8847 df-en 8965 df-dom 8966 df-sdom 8967 df-pnf 11281 df-mnf 11282 df-xr 11283 df-ltxr 11284 df-le 11285 df-sub 11477 df-neg 11478 df-nn 12244 df-2 12306 df-3 12307 df-4 12308 df-5 12309 df-6 12310 df-7 12311 df-8 12312 df-9 12313 df-dec 12709 df-sets 17133 df-slot 17151 df-ndx 17163 df-base 17181 df-ple 17253 df-odu 18279 df-proset 18287 df-mgc 32721

This theorem is referenced by: (None)

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