mgccnv - Mathbox for Thierry Arnoux

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Theorem mgccnv 32672

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 3280	. . . 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 6897	. . . . . . . . . . 11 ⊢ (𝐺‘𝑦) ∈ V
6		vex 3472	. . . . . . . . . . 11 ⊢ 𝑥 ∈ V
7	5, 6	brcnv 5875	. . . . . . . . . 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 3472	. . . . . . . . . . 11 ⊢ 𝑦 ∈ V
11		fvex 6897	. . . . . . . . . . 11 ⊢ (𝐹‘𝑥) ∈ V
12	10, 11	brcnv 5875	. . . . . . . . . 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 3169	. . . . 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 3169	. . . 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 630	. 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 2726	. . 3 ⊢ (Base‘𝑉) = (Base‘𝑉)
22		eqid 2726	. . 3 ⊢ (Base‘𝑊) = (Base‘𝑊)
23		eqid 2726	. . 3 ⊢ (le‘𝑉) = (le‘𝑉)
24		eqid 2726	. . 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 32660	. 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 2726	. . . 4 ⊢ (ODual‘𝑊) = (ODual‘𝑊)
30	29, 22	odubas 18254	. . 3 ⊢ (Base‘𝑊) = (Base‘(ODual‘𝑊))
31		eqid 2726	. . . 4 ⊢ (ODual‘𝑉) = (ODual‘𝑉)
32	31, 21	odubas 18254	. . 3 ⊢ (Base‘𝑉) = (Base‘(ODual‘𝑉))
33	29, 24	oduleval 18252	. . 3 ⊢ ^◡(le‘𝑊) = (le‘(ODual‘𝑊))
34	31, 23	oduleval 18252	. . 3 ⊢ ^◡(le‘𝑉) = (le‘(ODual‘𝑉))
35		mgccnv.2	. . 3 ⊢ 𝑀 = ((ODual‘𝑊)MGalConn(ODual‘𝑉))
36	29	oduprs 32637	. . . 4 ⊢ (𝑊 ∈ Proset → (ODual‘𝑊) ∈ Proset )
37	27, 36	syl 17	. . 3 ⊢ ((𝑉 ∈ Proset ∧ 𝑊 ∈ Proset ) → (ODual‘𝑊) ∈ Proset )
38	31	oduprs 32637	. . . 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 32660	. 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 1533 ∈ wcel 2098 ∀wral 3055 class class class wbr 5141 ^◡ccnv 5668 ⟶wf 6532 ‘cfv 6536 (class class class)co 7404 Basecbs 17151 lecple 17211 ODualcodu 18249 Proset cproset 18256 MGalConncmgc 32652

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7721 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6293 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6488 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-om 7852 df-2nd 7972 df-frecs 8264 df-wrecs 8295 df-recs 8369 df-rdg 8408 df-er 8702 df-map 8821 df-en 8939 df-dom 8940 df-sdom 8941 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11447 df-neg 11448 df-nn 12214 df-2 12276 df-3 12277 df-4 12278 df-5 12279 df-6 12280 df-7 12281 df-8 12282 df-9 12283 df-dec 12679 df-sets 17104 df-slot 17122 df-ndx 17134 df-base 17152 df-ple 17224 df-odu 18250 df-proset 18258 df-mgc 32654

This theorem is referenced by: (None)

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