Theorem dihmeetlem2N 41301

Description: Isomorphism H of a conjunction. (Contributed by NM, 22-Mar-2014.) (New usage is discouraged.)

Hypotheses

Ref	Expression
dihmeetlem2.b	⊢ 𝐵 = (Base‘𝐾)
dihmeetlem2.m	⊢ ∧ = (meet‘𝐾)
dihmeetlem2.h	⊢ 𝐻 = (LHyp‘𝐾)
dihmeetlem2.i	⊢ 𝐼 = ((DIsoH‘𝐾)‘𝑊)
dihmeetlem2.l	⊢ ≤ = (le‘𝐾)
dihmeetlem2.j	⊢ ∨ = (join‘𝐾)
dihmeetlem2.a	⊢ 𝐴 = (Atoms‘𝐾)
dihmeetlem2.p	⊢ 𝑃 = ((oc‘𝐾)‘𝑊)
dihmeetlem2.t	⊢ 𝑇 = ((LTrn‘𝐾)‘𝑊)
dihmeetlem2.r	⊢ 𝑅 = ((trL‘𝐾)‘𝑊)
dihmeetlem2.e	⊢ 𝐸 = ((TEndo‘𝐾)‘𝑊)
dihmeetlem2.g	⊢ 𝐺 = (℩ℎ ∈ 𝑇 (ℎ‘𝑃) = 𝑞)
dihmeetlem2.o	⊢ 0 = (ℎ ∈ 𝑇 ↦ ( I ↾ 𝐵))

Assertion

Ref	Expression
dihmeetlem2N	⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (𝐼‘(𝑋 ∧ 𝑌)) = ((𝐼‘𝑋) ∩ (𝐼‘𝑌)))

Proof of Theorem dihmeetlem2N

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2737	. . . . . 6 ⊢ (glb‘𝐾) = (glb‘𝐾)
2		dihmeetlem2.m	. . . . . 6 ⊢ ∧ = (meet‘𝐾)
3		simp1l 1198	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝐾 ∈ HL)
4		simp2l 1200	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝑋 ∈ 𝐵)
5		simp3l 1202	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝑌 ∈ 𝐵)
6	1, 2, 3, 4, 5	meetval 18436	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (𝑋 ∧ 𝑌) = ((glb‘𝐾)‘{𝑋, 𝑌}))
7	6	fveq2d 6910	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (((DIsoB‘𝐾)‘𝑊)‘(𝑋 ∧ 𝑌)) = (((DIsoB‘𝐾)‘𝑊)‘((glb‘𝐾)‘{𝑋, 𝑌})))
8		simp1 1137	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
9		dihmeetlem2.b	. . . . . . . . 9 ⊢ 𝐵 = (Base‘𝐾)
10		dihmeetlem2.l	. . . . . . . . 9 ⊢ ≤ = (le‘𝐾)
11		dihmeetlem2.h	. . . . . . . . 9 ⊢ 𝐻 = (LHyp‘𝐾)
12		eqid 2737	. . . . . . . . 9 ⊢ ((DIsoB‘𝐾)‘𝑊) = ((DIsoB‘𝐾)‘𝑊)
13	9, 10, 11, 12	dibeldmN 41160	. . . . . . . 8 ⊢ ((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) → (𝑋 ∈ dom ((DIsoB‘𝐾)‘𝑊) ↔ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊)))
14	13	biimpar 477	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊)) → 𝑋 ∈ dom ((DIsoB‘𝐾)‘𝑊))
15	14	3adant3 1133	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝑋 ∈ dom ((DIsoB‘𝐾)‘𝑊))
16	9, 10, 11, 12	dibeldmN 41160	. . . . . . . 8 ⊢ ((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) → (𝑌 ∈ dom ((DIsoB‘𝐾)‘𝑊) ↔ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)))
17	16	biimpar 477	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝑌 ∈ dom ((DIsoB‘𝐾)‘𝑊))
18	17	3adant2 1132	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝑌 ∈ dom ((DIsoB‘𝐾)‘𝑊))
19		prssg 4819	. . . . . . 7 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋 ∈ dom ((DIsoB‘𝐾)‘𝑊) ∧ 𝑌 ∈ dom ((DIsoB‘𝐾)‘𝑊)) ↔ {𝑋, 𝑌} ⊆ dom ((DIsoB‘𝐾)‘𝑊)))
20	4, 5, 19	syl2anc 584	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → ((𝑋 ∈ dom ((DIsoB‘𝐾)‘𝑊) ∧ 𝑌 ∈ dom ((DIsoB‘𝐾)‘𝑊)) ↔ {𝑋, 𝑌} ⊆ dom ((DIsoB‘𝐾)‘𝑊)))
21	15, 18, 20	mpbi2and 712	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → {𝑋, 𝑌} ⊆ dom ((DIsoB‘𝐾)‘𝑊))
22		prnzg 4778	. . . . . 6 ⊢ (𝑋 ∈ 𝐵 → {𝑋, 𝑌} ≠ ∅)
23	4, 22	syl 17	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → {𝑋, 𝑌} ≠ ∅)
24	1, 11, 12	dibglbN 41168	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ({𝑋, 𝑌} ⊆ dom ((DIsoB‘𝐾)‘𝑊) ∧ {𝑋, 𝑌} ≠ ∅)) → (((DIsoB‘𝐾)‘𝑊)‘((glb‘𝐾)‘{𝑋, 𝑌})) = ∩ 𝑥 ∈ {𝑋, 𝑌} (((DIsoB‘𝐾)‘𝑊)‘𝑥))
25	8, 21, 23, 24	syl12anc 837	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (((DIsoB‘𝐾)‘𝑊)‘((glb‘𝐾)‘{𝑋, 𝑌})) = ∩ 𝑥 ∈ {𝑋, 𝑌} (((DIsoB‘𝐾)‘𝑊)‘𝑥))
26	7, 25	eqtrd 2777	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (((DIsoB‘𝐾)‘𝑊)‘(𝑋 ∧ 𝑌)) = ∩ 𝑥 ∈ {𝑋, 𝑌} (((DIsoB‘𝐾)‘𝑊)‘𝑥))
27	3	hllatd 39365	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝐾 ∈ Lat)
28	9, 2	latmcl 18485	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ∧ 𝑌) ∈ 𝐵)
29	27, 4, 5, 28	syl3anc 1373	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (𝑋 ∧ 𝑌) ∈ 𝐵)
30		simp1r 1199	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝑊 ∈ 𝐻)
31	9, 11	lhpbase 40000	. . . . . 6 ⊢ (𝑊 ∈ 𝐻 → 𝑊 ∈ 𝐵)
32	30, 31	syl 17	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝑊 ∈ 𝐵)
33	9, 10, 2	latmle1 18509	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ∧ 𝑌) ≤ 𝑋)
34	27, 4, 5, 33	syl3anc 1373	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (𝑋 ∧ 𝑌) ≤ 𝑋)
35		simp2r 1201	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → 𝑋 ≤ 𝑊)
36	9, 10, 27, 29, 4, 32, 34, 35	lattrd 18491	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (𝑋 ∧ 𝑌) ≤ 𝑊)
37		dihmeetlem2.i	. . . . 5 ⊢ 𝐼 = ((DIsoH‘𝐾)‘𝑊)
38	9, 10, 11, 37, 12	dihvalb 41239	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ ((𝑋 ∧ 𝑌) ∈ 𝐵 ∧ (𝑋 ∧ 𝑌) ≤ 𝑊)) → (𝐼‘(𝑋 ∧ 𝑌)) = (((DIsoB‘𝐾)‘𝑊)‘(𝑋 ∧ 𝑌)))
39	8, 29, 36, 38	syl12anc 837	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (𝐼‘(𝑋 ∧ 𝑌)) = (((DIsoB‘𝐾)‘𝑊)‘(𝑋 ∧ 𝑌)))
40		simpl1 1192	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑥 ∈ {𝑋, 𝑌}) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
41		vex 3484	. . . . . . 7 ⊢ 𝑥 ∈ V
42	41	elpr 4650	. . . . . 6 ⊢ (𝑥 ∈ {𝑋, 𝑌} ↔ (𝑥 = 𝑋 ∨ 𝑥 = 𝑌))
43		simpl2 1193	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑥 = 𝑋) → (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊))
44		eleq1 2829	. . . . . . . . . 10 ⊢ (𝑥 = 𝑋 → (𝑥 ∈ 𝐵 ↔ 𝑋 ∈ 𝐵))
45		breq1 5146	. . . . . . . . . 10 ⊢ (𝑥 = 𝑋 → (𝑥 ≤ 𝑊 ↔ 𝑋 ≤ 𝑊))
46	44, 45	anbi12d 632	. . . . . . . . 9 ⊢ (𝑥 = 𝑋 → ((𝑥 ∈ 𝐵 ∧ 𝑥 ≤ 𝑊) ↔ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊)))
47	46	adantl 481	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑥 = 𝑋) → ((𝑥 ∈ 𝐵 ∧ 𝑥 ≤ 𝑊) ↔ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊)))
48	43, 47	mpbird 257	. . . . . . 7 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑥 = 𝑋) → (𝑥 ∈ 𝐵 ∧ 𝑥 ≤ 𝑊))
49		simpl3 1194	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑥 = 𝑌) → (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊))
50		eleq1 2829	. . . . . . . . . 10 ⊢ (𝑥 = 𝑌 → (𝑥 ∈ 𝐵 ↔ 𝑌 ∈ 𝐵))
51		breq1 5146	. . . . . . . . . 10 ⊢ (𝑥 = 𝑌 → (𝑥 ≤ 𝑊 ↔ 𝑌 ≤ 𝑊))
52	50, 51	anbi12d 632	. . . . . . . . 9 ⊢ (𝑥 = 𝑌 → ((𝑥 ∈ 𝐵 ∧ 𝑥 ≤ 𝑊) ↔ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)))
53	52	adantl 481	. . . . . . . 8 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑥 = 𝑌) → ((𝑥 ∈ 𝐵 ∧ 𝑥 ≤ 𝑊) ↔ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)))
54	49, 53	mpbird 257	. . . . . . 7 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑥 = 𝑌) → (𝑥 ∈ 𝐵 ∧ 𝑥 ≤ 𝑊))
55	48, 54	jaodan 960	. . . . . 6 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ (𝑥 = 𝑋 ∨ 𝑥 = 𝑌)) → (𝑥 ∈ 𝐵 ∧ 𝑥 ≤ 𝑊))
56	42, 55	sylan2b 594	. . . . 5 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑥 ∈ {𝑋, 𝑌}) → (𝑥 ∈ 𝐵 ∧ 𝑥 ≤ 𝑊))
57	9, 10, 11, 37, 12	dihvalb 41239	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑥 ∈ 𝐵 ∧ 𝑥 ≤ 𝑊)) → (𝐼‘𝑥) = (((DIsoB‘𝐾)‘𝑊)‘𝑥))
58	40, 56, 57	syl2anc 584	. . . 4 ⊢ ((((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) ∧ 𝑥 ∈ {𝑋, 𝑌}) → (𝐼‘𝑥) = (((DIsoB‘𝐾)‘𝑊)‘𝑥))
59	58	iineq2dv 5017	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → ∩ 𝑥 ∈ {𝑋, 𝑌} (𝐼‘𝑥) = ∩ 𝑥 ∈ {𝑋, 𝑌} (((DIsoB‘𝐾)‘𝑊)‘𝑥))
60	26, 39, 59	3eqtr4d 2787	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (𝐼‘(𝑋 ∧ 𝑌)) = ∩ 𝑥 ∈ {𝑋, 𝑌} (𝐼‘𝑥))
61		fveq2 6906	. . . 4 ⊢ (𝑥 = 𝑋 → (𝐼‘𝑥) = (𝐼‘𝑋))
62		fveq2 6906	. . . 4 ⊢ (𝑥 = 𝑌 → (𝐼‘𝑥) = (𝐼‘𝑌))
63	61, 62	iinxprg 5089	. . 3 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ∩ 𝑥 ∈ {𝑋, 𝑌} (𝐼‘𝑥) = ((𝐼‘𝑋) ∩ (𝐼‘𝑌)))
64	4, 5, 63	syl2anc 584	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → ∩ 𝑥 ∈ {𝑋, 𝑌} (𝐼‘𝑥) = ((𝐼‘𝑋) ∩ (𝐼‘𝑌)))
65	60, 64	eqtrd 2777	1 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑋 ≤ 𝑊) ∧ (𝑌 ∈ 𝐵 ∧ 𝑌 ≤ 𝑊)) → (𝐼‘(𝑋 ∧ 𝑌)) = ((𝐼‘𝑋) ∩ (𝐼‘𝑌)))

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   ∨ wo 848   ∧ w3a 1087   = wceq 1540   ∈ wcel 2108   ≠ wne 2940   ∩ cin 3950   ⊆ wss 3951  ∅c0 4333  {cpr 4628  ∩ ciin 4992   class class class wbr 5143   ↦ cmpt 5225   I cid 5577  dom cdm 5685   ↾ cres 5687  ‘cfv 6561  ℩crio 7387  (class class class)co 7431  Basecbs 17247  lecple 17304  occoc 17305  glbcglb 18356  joincjn 18357  meetcmee 18358  Latclat 18476  Atomscatm 39264  HLchlt 39351  LHypclh 39986  LTrncltrn 40103  trLctrl 40160  TEndoctendo 40754  DIsoBcdib 41140  DIsoHcdih 41230

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2708  ax-rep 5279  ax-sep 5296  ax-nul 5306  ax-pow 5365  ax-pr 5432  ax-un 7755

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2540  df-eu 2569  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2892  df-ne 2941  df-ral 3062  df-rex 3071  df-rmo 3380  df-reu 3381  df-rab 3437  df-v 3482  df-sbc 3789  df-csb 3900  df-dif 3954  df-un 3956  df-in 3958  df-ss 3968  df-nul 4334  df-if 4526  df-pw 4602  df-sn 4627  df-pr 4629  df-op 4633  df-uni 4908  df-iun 4993  df-iin 4994  df-br 5144  df-opab 5206  df-mpt 5226  df-id 5578  df-xp 5691  df-rel 5692  df-cnv 5693  df-co 5694  df-dm 5695  df-rn 5696  df-res 5697  df-ima 5698  df-iota 6514  df-fun 6563  df-fn 6564  df-f 6565  df-f1 6566  df-fo 6567  df-f1o 6568  df-fv 6569  df-riota 7388  df-ov 7434  df-oprab 7435  df-mpo 7436  df-map 8868  df-proset 18340  df-poset 18359  df-plt 18375  df-lub 18391  df-glb 18392  df-join 18393  df-meet 18394  df-p0 18470  df-p1 18471  df-lat 18477  df-clat 18544  df-oposet 39177  df-ol 39179  df-oml 39180  df-covers 39267  df-ats 39268  df-atl 39299  df-cvlat 39323  df-hlat 39352  df-lhyp 39990  df-laut 39991  df-ldil 40106  df-ltrn 40107  df-trl 40161  df-disoa 41031  df-dib 41141  df-dih 41231

This theorem is referenced by:  dihmeetbN  41305