mgccnv - Mathbox for Thierry Arnoux

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Theorem mgccnv 32156

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 461	. . . 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 3286	. . . 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 6901	. . . . . . . . . . 11 ⊢ (𝐺‘𝑦) ∈ V
6		vex 3478	. . . . . . . . . . 11 ⊢ 𝑥 ∈ V
7	5, 6	brcnv 5880	. . . . . . . . . 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 3478	. . . . . . . . . . 11 ⊢ 𝑦 ∈ V
11		fvex 6901	. . . . . . . . . . 11 ⊢ (𝐹‘𝑥) ∈ V
12	10, 11	brcnv 5880	. . . . . . . . . 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 282	. . . . . 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 3175	. . . . 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 3175	. . . 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 282	. . 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 2732	. . 3 ⊢ (Base‘𝑉) = (Base‘𝑉)
22		eqid 2732	. . 3 ⊢ (Base‘𝑊) = (Base‘𝑊)
23		eqid 2732	. . 3 ⊢ (le‘𝑉) = (le‘𝑉)
24		eqid 2732	. . 3 ⊢ (le‘𝑊) = (le‘𝑊)
25		mgccnv.1	. . 3 ⊢ 𝐻 = (𝑉MGalConn𝑊)
26		simpl 483	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → 𝑉 ∈ Proset )
27		simpr 485	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → 𝑊 ∈ Proset )
28	21, 22, 23, 24, 25, 26, 27	mgcval 32144	. 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 2732	. . . 4 ⊢ (ODual‘𝑊) = (ODual‘𝑊)
30	29, 22	odubas 18240	. . 3 ⊢ (Base‘𝑊) = (Base‘(ODual‘𝑊))
31		eqid 2732	. . . 4 ⊢ (ODual‘𝑉) = (ODual‘𝑉)
32	31, 21	odubas 18240	. . 3 ⊢ (Base‘𝑉) = (Base‘(ODual‘𝑉))
33	29, 24	oduleval 18238	. . 3 ⊢ ^◡(le‘𝑊) = (le‘(ODual‘𝑊))
34	31, 23	oduleval 18238	. . 3 ⊢ ^◡(le‘𝑉) = (le‘(ODual‘𝑉))
35		mgccnv.2	. . 3 ⊢ 𝑀 = ((ODual‘𝑊)MGalConn(ODual‘𝑉))
36	29	oduprs 32121	. . . 4 ⊢ (𝑊 ∈ Proset → (ODual‘𝑊) ∈ Proset )
37	27, 36	syl 17	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (ODual‘𝑊) ∈ Proset )
38	31	oduprs 32121	. . . 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 32144	. 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 310	1 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (𝐹𝐻𝐺 ↔ 𝐺𝑀𝐹))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ∀wral 3061 class class class wbr 5147 ^◡ccnv 5674 ⟶wf 6536 ‘cfv 6540 (class class class)co 7405 Basecbs 17140 lecple 17200 ODualcodu 18235 Proset cproset 18242 MGalConncmgc 32136

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7852 df-2nd 7972 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-er 8699 df-map 8818 df-en 8936 df-dom 8937 df-sdom 8938 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-nn 12209 df-2 12271 df-3 12272 df-4 12273 df-5 12274 df-6 12275 df-7 12276 df-8 12277 df-9 12278 df-dec 12674 df-sets 17093 df-slot 17111 df-ndx 17123 df-base 17141 df-ple 17213 df-odu 18236 df-proset 18244 df-mgc 32138

This theorem is referenced by: (None)

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