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Theorem cvrexchlem 36708
Description: Lemma for cvrexch 36709. (cvexchlem 30154 analog.) (Contributed by NM, 18-Nov-2011.)
Hypotheses
Ref Expression
cvrexch.b 𝐵 = (Base‘𝐾)
cvrexch.j = (join‘𝐾)
cvrexch.m = (meet‘𝐾)
cvrexch.c 𝐶 = ( ⋖ ‘𝐾)
Assertion
Ref Expression
cvrexchlem ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → ((𝑋 𝑌)𝐶𝑌𝑋𝐶(𝑋 𝑌)))

Proof of Theorem cvrexchlem
Dummy variable 𝑝 is distinct from all other variables.
StepHypRef Expression
1 hllat 36652 . . . . . . 7 (𝐾 ∈ HL → 𝐾 ∈ Lat)
2 cvrexch.b . . . . . . . 8 𝐵 = (Base‘𝐾)
3 cvrexch.m . . . . . . . 8 = (meet‘𝐾)
42, 3latmcl 17657 . . . . . . 7 ((𝐾 ∈ Lat ∧ 𝑋𝐵𝑌𝐵) → (𝑋 𝑌) ∈ 𝐵)
51, 4syl3an1 1160 . . . . . 6 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → (𝑋 𝑌) ∈ 𝐵)
6 eqid 2801 . . . . . . . 8 (lt‘𝐾) = (lt‘𝐾)
7 cvrexch.c . . . . . . . 8 𝐶 = ( ⋖ ‘𝐾)
82, 6, 7cvrlt 36559 . . . . . . 7 (((𝐾 ∈ HL ∧ (𝑋 𝑌) ∈ 𝐵𝑌𝐵) ∧ (𝑋 𝑌)𝐶𝑌) → (𝑋 𝑌)(lt‘𝐾)𝑌)
98ex 416 . . . . . 6 ((𝐾 ∈ HL ∧ (𝑋 𝑌) ∈ 𝐵𝑌𝐵) → ((𝑋 𝑌)𝐶𝑌 → (𝑋 𝑌)(lt‘𝐾)𝑌))
105, 9syld3an2 1408 . . . . 5 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → ((𝑋 𝑌)𝐶𝑌 → (𝑋 𝑌)(lt‘𝐾)𝑌))
11 eqid 2801 . . . . . . 7 (le‘𝐾) = (le‘𝐾)
12 eqid 2801 . . . . . . 7 (Atoms‘𝐾) = (Atoms‘𝐾)
132, 11, 6, 12hlrelat1 36689 . . . . . 6 ((𝐾 ∈ HL ∧ (𝑋 𝑌) ∈ 𝐵𝑌𝐵) → ((𝑋 𝑌)(lt‘𝐾)𝑌 → ∃𝑝 ∈ (Atoms‘𝐾)(¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌)))
145, 13syld3an2 1408 . . . . 5 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → ((𝑋 𝑌)(lt‘𝐾)𝑌 → ∃𝑝 ∈ (Atoms‘𝐾)(¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌)))
1510, 14syld 47 . . . 4 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → ((𝑋 𝑌)𝐶𝑌 → ∃𝑝 ∈ (Atoms‘𝐾)(¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌)))
1615imp 410 . . 3 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ (𝑋 𝑌)𝐶𝑌) → ∃𝑝 ∈ (Atoms‘𝐾)(¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))
17 simpl1 1188 . . . . . . . . . . . . . . . . 17 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝐾 ∈ HL)
1817hllatd 36653 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝐾 ∈ Lat)
192, 12atbase 36578 . . . . . . . . . . . . . . . . 17 (𝑝 ∈ (Atoms‘𝐾) → 𝑝𝐵)
2019adantl 485 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝑝𝐵)
21 simpl2 1189 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝑋𝐵)
22 simpl3 1190 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝑌𝐵)
232, 11, 3latlem12 17683 . . . . . . . . . . . . . . . 16 ((𝐾 ∈ Lat ∧ (𝑝𝐵𝑋𝐵𝑌𝐵)) → ((𝑝(le‘𝐾)𝑋𝑝(le‘𝐾)𝑌) ↔ 𝑝(le‘𝐾)(𝑋 𝑌)))
2418, 20, 21, 22, 23syl13anc 1369 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → ((𝑝(le‘𝐾)𝑋𝑝(le‘𝐾)𝑌) ↔ 𝑝(le‘𝐾)(𝑋 𝑌)))
2524biimpd 232 . . . . . . . . . . . . . 14 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → ((𝑝(le‘𝐾)𝑋𝑝(le‘𝐾)𝑌) → 𝑝(le‘𝐾)(𝑋 𝑌)))
2625expcomd 420 . . . . . . . . . . . . 13 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → (𝑝(le‘𝐾)𝑌 → (𝑝(le‘𝐾)𝑋𝑝(le‘𝐾)(𝑋 𝑌))))
27 con3 156 . . . . . . . . . . . . 13 ((𝑝(le‘𝐾)𝑋𝑝(le‘𝐾)(𝑋 𝑌)) → (¬ 𝑝(le‘𝐾)(𝑋 𝑌) → ¬ 𝑝(le‘𝐾)𝑋))
2826, 27syl6 35 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → (𝑝(le‘𝐾)𝑌 → (¬ 𝑝(le‘𝐾)(𝑋 𝑌) → ¬ 𝑝(le‘𝐾)𝑋)))
2928com23 86 . . . . . . . . . . 11 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → (¬ 𝑝(le‘𝐾)(𝑋 𝑌) → (𝑝(le‘𝐾)𝑌 → ¬ 𝑝(le‘𝐾)𝑋)))
3029a1d 25 . . . . . . . . . 10 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → ((𝑋 𝑌)𝐶𝑌 → (¬ 𝑝(le‘𝐾)(𝑋 𝑌) → (𝑝(le‘𝐾)𝑌 → ¬ 𝑝(le‘𝐾)𝑋))))
3130imp4d 428 . . . . . . . . 9 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → (((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌)) → ¬ 𝑝(le‘𝐾)𝑋))
32 simpr 488 . . . . . . . . . 10 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝑝 ∈ (Atoms‘𝐾))
33 cvrexch.j . . . . . . . . . . 11 = (join‘𝐾)
342, 11, 33, 7, 12cvr1 36699 . . . . . . . . . 10 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑝 ∈ (Atoms‘𝐾)) → (¬ 𝑝(le‘𝐾)𝑋𝑋𝐶(𝑋 𝑝)))
3517, 21, 32, 34syl3anc 1368 . . . . . . . . 9 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → (¬ 𝑝(le‘𝐾)𝑋𝑋𝐶(𝑋 𝑝)))
3631, 35sylibd 242 . . . . . . . 8 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → (((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌)) → 𝑋𝐶(𝑋 𝑝)))
3736imp 410 . . . . . . 7 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → 𝑋𝐶(𝑋 𝑝))
38 simpl1 1188 . . . . . . . . . . . . 13 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝐾 ∈ HL)
3938hllatd 36653 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝐾 ∈ Lat)
40 simpl2 1189 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝑋𝐵)
41 simpl3 1190 . . . . . . . . . . . . 13 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝑌𝐵)
4239, 40, 41, 4syl3anc 1368 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑋 𝑌) ∈ 𝐵)
43 simpr 488 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝑝𝐵)
442, 33latjass 17700 . . . . . . . . . . . 12 ((𝐾 ∈ Lat ∧ (𝑋𝐵 ∧ (𝑋 𝑌) ∈ 𝐵𝑝𝐵)) → ((𝑋 (𝑋 𝑌)) 𝑝) = (𝑋 ((𝑋 𝑌) 𝑝)))
4539, 40, 42, 43, 44syl13anc 1369 . . . . . . . . . . 11 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 (𝑋 𝑌)) 𝑝) = (𝑋 ((𝑋 𝑌) 𝑝)))
462, 33, 3latabs1 17692 . . . . . . . . . . . . . 14 ((𝐾 ∈ Lat ∧ 𝑋𝐵𝑌𝐵) → (𝑋 (𝑋 𝑌)) = 𝑋)
471, 46syl3an1 1160 . . . . . . . . . . . . 13 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → (𝑋 (𝑋 𝑌)) = 𝑋)
4847adantr 484 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑋 (𝑋 𝑌)) = 𝑋)
4948oveq1d 7154 . . . . . . . . . . 11 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 (𝑋 𝑌)) 𝑝) = (𝑋 𝑝))
5045, 49eqtr3d 2838 . . . . . . . . . 10 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑋 ((𝑋 𝑌) 𝑝)) = (𝑋 𝑝))
5150adantr 484 . . . . . . . . 9 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → (𝑋 ((𝑋 𝑌) 𝑝)) = (𝑋 𝑝))
522, 11, 6, 33latnle 17690 . . . . . . . . . . . . . . 15 ((𝐾 ∈ Lat ∧ (𝑋 𝑌) ∈ 𝐵𝑝𝐵) → (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ↔ (𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝)))
5339, 42, 43, 52syl3anc 1368 . . . . . . . . . . . . . 14 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ↔ (𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝)))
542, 11, 3latmle2 17682 . . . . . . . . . . . . . . . . 17 ((𝐾 ∈ Lat ∧ 𝑋𝐵𝑌𝐵) → (𝑋 𝑌)(le‘𝐾)𝑌)
5539, 40, 41, 54syl3anc 1368 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑋 𝑌)(le‘𝐾)𝑌)
5655biantrurd 536 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑝(le‘𝐾)𝑌 ↔ ((𝑋 𝑌)(le‘𝐾)𝑌𝑝(le‘𝐾)𝑌)))
572, 11, 33latjle12 17667 . . . . . . . . . . . . . . . 16 ((𝐾 ∈ Lat ∧ ((𝑋 𝑌) ∈ 𝐵𝑝𝐵𝑌𝐵)) → (((𝑋 𝑌)(le‘𝐾)𝑌𝑝(le‘𝐾)𝑌) ↔ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌))
5839, 42, 43, 41, 57syl13anc 1369 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (((𝑋 𝑌)(le‘𝐾)𝑌𝑝(le‘𝐾)𝑌) ↔ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌))
5956, 58bitrd 282 . . . . . . . . . . . . . 14 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑝(le‘𝐾)𝑌 ↔ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌))
6053, 59anbi12d 633 . . . . . . . . . . . . 13 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌) ↔ ((𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝) ∧ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌)))
61 hlpos 36655 . . . . . . . . . . . . . . . 16 (𝐾 ∈ HL → 𝐾 ∈ Poset)
6238, 61syl 17 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝐾 ∈ Poset)
632, 33latjcl 17656 . . . . . . . . . . . . . . . . 17 ((𝐾 ∈ Lat ∧ (𝑋 𝑌) ∈ 𝐵𝑝𝐵) → ((𝑋 𝑌) 𝑝) ∈ 𝐵)
6439, 42, 43, 63syl3anc 1368 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 𝑌) 𝑝) ∈ 𝐵)
6542, 41, 643jca 1125 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 𝑌) ∈ 𝐵𝑌𝐵 ∧ ((𝑋 𝑌) 𝑝) ∈ 𝐵))
662, 11, 6, 7cvrnbtwn2 36564 . . . . . . . . . . . . . . . . 17 ((𝐾 ∈ Poset ∧ ((𝑋 𝑌) ∈ 𝐵𝑌𝐵 ∧ ((𝑋 𝑌) 𝑝) ∈ 𝐵) ∧ (𝑋 𝑌)𝐶𝑌) → (((𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝) ∧ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌) ↔ ((𝑋 𝑌) 𝑝) = 𝑌))
6766biimpd 232 . . . . . . . . . . . . . . . 16 ((𝐾 ∈ Poset ∧ ((𝑋 𝑌) ∈ 𝐵𝑌𝐵 ∧ ((𝑋 𝑌) 𝑝) ∈ 𝐵) ∧ (𝑋 𝑌)𝐶𝑌) → (((𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝) ∧ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌) → ((𝑋 𝑌) 𝑝) = 𝑌))
68673exp 1116 . . . . . . . . . . . . . . 15 (𝐾 ∈ Poset → (((𝑋 𝑌) ∈ 𝐵𝑌𝐵 ∧ ((𝑋 𝑌) 𝑝) ∈ 𝐵) → ((𝑋 𝑌)𝐶𝑌 → (((𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝) ∧ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌) → ((𝑋 𝑌) 𝑝) = 𝑌))))
6962, 65, 68sylc 65 . . . . . . . . . . . . . 14 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 𝑌)𝐶𝑌 → (((𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝) ∧ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌) → ((𝑋 𝑌) 𝑝) = 𝑌)))
7069com23 86 . . . . . . . . . . . . 13 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (((𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝) ∧ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌) → ((𝑋 𝑌)𝐶𝑌 → ((𝑋 𝑌) 𝑝) = 𝑌)))
7160, 70sylbid 243 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌) → ((𝑋 𝑌)𝐶𝑌 → ((𝑋 𝑌) 𝑝) = 𝑌)))
7271com23 86 . . . . . . . . . . 11 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 𝑌)𝐶𝑌 → ((¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌) → ((𝑋 𝑌) 𝑝) = 𝑌)))
7372imp32 422 . . . . . . . . . 10 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → ((𝑋 𝑌) 𝑝) = 𝑌)
7473oveq2d 7155 . . . . . . . . 9 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → (𝑋 ((𝑋 𝑌) 𝑝)) = (𝑋 𝑌))
7551, 74eqtr3d 2838 . . . . . . . 8 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → (𝑋 𝑝) = (𝑋 𝑌))
7619, 75sylanl2 680 . . . . . . 7 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → (𝑋 𝑝) = (𝑋 𝑌))
7737, 76breqtrd 5059 . . . . . 6 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → 𝑋𝐶(𝑋 𝑌))
7877expr 460 . . . . 5 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) ∧ (𝑋 𝑌)𝐶𝑌) → ((¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌) → 𝑋𝐶(𝑋 𝑌)))
7978an32s 651 . . . 4 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ (𝑋 𝑌)𝐶𝑌) ∧ 𝑝 ∈ (Atoms‘𝐾)) → ((¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌) → 𝑋𝐶(𝑋 𝑌)))
8079rexlimdva 3246 . . 3 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ (𝑋 𝑌)𝐶𝑌) → (∃𝑝 ∈ (Atoms‘𝐾)(¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌) → 𝑋𝐶(𝑋 𝑌)))
8116, 80mpd 15 . 2 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ (𝑋 𝑌)𝐶𝑌) → 𝑋𝐶(𝑋 𝑌))
8281ex 416 1 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → ((𝑋 𝑌)𝐶𝑌𝑋𝐶(𝑋 𝑌)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 209  wa 399  w3a 1084   = wceq 1538  wcel 2112  wrex 3110   class class class wbr 5033  cfv 6328  (class class class)co 7139  Basecbs 16478  lecple 16567  Posetcpo 17545  ltcplt 17546  joincjn 17549  meetcmee 17550  Latclat 17650  ccvr 36551  Atomscatm 36552  HLchlt 36639
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 1911  ax-6 1970  ax-7 2015  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2159  ax-12 2176  ax-ext 2773  ax-rep 5157  ax-sep 5170  ax-nul 5177  ax-pow 5234  ax-pr 5298  ax-un 7445
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2601  df-eu 2632  df-clab 2780  df-cleq 2794  df-clel 2873  df-nfc 2941  df-ne 2991  df-ral 3114  df-rex 3115  df-reu 3116  df-rab 3118  df-v 3446  df-sbc 3724  df-csb 3832  df-dif 3887  df-un 3889  df-in 3891  df-ss 3901  df-nul 4247  df-if 4429  df-pw 4502  df-sn 4529  df-pr 4531  df-op 4535  df-uni 4804  df-iun 4886  df-br 5034  df-opab 5096  df-mpt 5114  df-id 5428  df-xp 5529  df-rel 5530  df-cnv 5531  df-co 5532  df-dm 5533  df-rn 5534  df-res 5535  df-ima 5536  df-iota 6287  df-fun 6330  df-fn 6331  df-f 6332  df-f1 6333  df-fo 6334  df-f1o 6335  df-fv 6336  df-riota 7097  df-ov 7142  df-oprab 7143  df-proset 17533  df-poset 17551  df-plt 17563  df-lub 17579  df-glb 17580  df-join 17581  df-meet 17582  df-p0 17644  df-lat 17651  df-clat 17713  df-oposet 36465  df-ol 36467  df-oml 36468  df-covers 36555  df-ats 36556  df-atl 36587  df-cvlat 36611  df-hlat 36640
This theorem is referenced by:  cvrexch  36709
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