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Theorem cvrexchlem 35023
Description: Lemma for cvrexch 35024. (cvexchlem 29355 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 34968 . . . . . . 7 (𝐾 ∈ HL → 𝐾 ∈ Lat)
2 cvrexch.b . . . . . . . 8 𝐵 = (Base‘𝐾)
3 cvrexch.m . . . . . . . 8 = (meet‘𝐾)
42, 3latmcl 17099 . . . . . . 7 ((𝐾 ∈ Lat ∧ 𝑋𝐵𝑌𝐵) → (𝑋 𝑌) ∈ 𝐵)
51, 4syl3an1 1399 . . . . . 6 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → (𝑋 𝑌) ∈ 𝐵)
6 eqid 2651 . . . . . . . 8 (lt‘𝐾) = (lt‘𝐾)
7 cvrexch.c . . . . . . . 8 𝐶 = ( ⋖ ‘𝐾)
82, 6, 7cvrlt 34875 . . . . . . 7 (((𝐾 ∈ HL ∧ (𝑋 𝑌) ∈ 𝐵𝑌𝐵) ∧ (𝑋 𝑌)𝐶𝑌) → (𝑋 𝑌)(lt‘𝐾)𝑌)
98ex 449 . . . . . 6 ((𝐾 ∈ HL ∧ (𝑋 𝑌) ∈ 𝐵𝑌𝐵) → ((𝑋 𝑌)𝐶𝑌 → (𝑋 𝑌)(lt‘𝐾)𝑌))
105, 9syld3an2 1413 . . . . 5 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → ((𝑋 𝑌)𝐶𝑌 → (𝑋 𝑌)(lt‘𝐾)𝑌))
11 eqid 2651 . . . . . . 7 (le‘𝐾) = (le‘𝐾)
12 eqid 2651 . . . . . . 7 (Atoms‘𝐾) = (Atoms‘𝐾)
132, 11, 6, 12hlrelat1 35004 . . . . . 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 1413 . . . . 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 444 . . 3 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ (𝑋 𝑌)𝐶𝑌) → ∃𝑝 ∈ (Atoms‘𝐾)(¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))
17 simpl1 1084 . . . . . . . . . . . . . . . . 17 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝐾 ∈ HL)
1817, 1syl 17 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝐾 ∈ Lat)
192, 12atbase 34894 . . . . . . . . . . . . . . . . 17 (𝑝 ∈ (Atoms‘𝐾) → 𝑝𝐵)
2019adantl 481 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝑝𝐵)
21 simpl2 1085 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝑋𝐵)
22 simpl3 1086 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝑌𝐵)
232, 11, 3latlem12 17125 . . . . . . . . . . . . . . . 16 ((𝐾 ∈ Lat ∧ (𝑝𝐵𝑋𝐵𝑌𝐵)) → ((𝑝(le‘𝐾)𝑋𝑝(le‘𝐾)𝑌) ↔ 𝑝(le‘𝐾)(𝑋 𝑌)))
2418, 20, 21, 22, 23syl13anc 1368 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → ((𝑝(le‘𝐾)𝑋𝑝(le‘𝐾)𝑌) ↔ 𝑝(le‘𝐾)(𝑋 𝑌)))
2524biimpd 219 . . . . . . . . . . . . . 14 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → ((𝑝(le‘𝐾)𝑋𝑝(le‘𝐾)𝑌) → 𝑝(le‘𝐾)(𝑋 𝑌)))
2625expcomd 453 . . . . . . . . . . . . 13 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → (𝑝(le‘𝐾)𝑌 → (𝑝(le‘𝐾)𝑋𝑝(le‘𝐾)(𝑋 𝑌))))
27 con3 149 . . . . . . . . . . . . 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 617 . . . . . . . . 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 476 . . . . . . . . . 10 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → 𝑝 ∈ (Atoms‘𝐾))
33 cvrexch.j . . . . . . . . . . 11 = (join‘𝐾)
342, 11, 33, 7, 12cvr1 35014 . . . . . . . . . 10 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑝 ∈ (Atoms‘𝐾)) → (¬ 𝑝(le‘𝐾)𝑋𝑋𝐶(𝑋 𝑝)))
3517, 21, 32, 34syl3anc 1366 . . . . . . . . 9 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → (¬ 𝑝(le‘𝐾)𝑋𝑋𝐶(𝑋 𝑝)))
3631, 35sylibd 229 . . . . . . . 8 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) → (((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌)) → 𝑋𝐶(𝑋 𝑝)))
3736imp 444 . . . . . . 7 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → 𝑋𝐶(𝑋 𝑝))
38 simpl1 1084 . . . . . . . . . . . . 13 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝐾 ∈ HL)
3938, 1syl 17 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝐾 ∈ Lat)
40 simpl2 1085 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝑋𝐵)
41 simpl3 1086 . . . . . . . . . . . . 13 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝑌𝐵)
4239, 40, 41, 4syl3anc 1366 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑋 𝑌) ∈ 𝐵)
43 simpr 476 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝑝𝐵)
442, 33latjass 17142 . . . . . . . . . . . 12 ((𝐾 ∈ Lat ∧ (𝑋𝐵 ∧ (𝑋 𝑌) ∈ 𝐵𝑝𝐵)) → ((𝑋 (𝑋 𝑌)) 𝑝) = (𝑋 ((𝑋 𝑌) 𝑝)))
4539, 40, 42, 43, 44syl13anc 1368 . . . . . . . . . . 11 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 (𝑋 𝑌)) 𝑝) = (𝑋 ((𝑋 𝑌) 𝑝)))
462, 33, 3latabs1 17134 . . . . . . . . . . . . . 14 ((𝐾 ∈ Lat ∧ 𝑋𝐵𝑌𝐵) → (𝑋 (𝑋 𝑌)) = 𝑋)
471, 46syl3an1 1399 . . . . . . . . . . . . 13 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → (𝑋 (𝑋 𝑌)) = 𝑋)
4847adantr 480 . . . . . . . . . . . 12 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑋 (𝑋 𝑌)) = 𝑋)
4948oveq1d 6705 . . . . . . . . . . 11 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 (𝑋 𝑌)) 𝑝) = (𝑋 𝑝))
5045, 49eqtr3d 2687 . . . . . . . . . 10 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑋 ((𝑋 𝑌) 𝑝)) = (𝑋 𝑝))
5150adantr 480 . . . . . . . . 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 17132 . . . . . . . . . . . . . . 15 ((𝐾 ∈ Lat ∧ (𝑋 𝑌) ∈ 𝐵𝑝𝐵) → (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ↔ (𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝)))
5339, 42, 43, 52syl3anc 1366 . . . . . . . . . . . . . 14 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ↔ (𝑋 𝑌)(lt‘𝐾)((𝑋 𝑌) 𝑝)))
542, 11, 3latmle2 17124 . . . . . . . . . . . . . . . . 17 ((𝐾 ∈ Lat ∧ 𝑋𝐵𝑌𝐵) → (𝑋 𝑌)(le‘𝐾)𝑌)
5539, 40, 41, 54syl3anc 1366 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑋 𝑌)(le‘𝐾)𝑌)
5655biantrurd 528 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑝(le‘𝐾)𝑌 ↔ ((𝑋 𝑌)(le‘𝐾)𝑌𝑝(le‘𝐾)𝑌)))
572, 11, 33latjle12 17109 . . . . . . . . . . . . . . . 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 1368 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (((𝑋 𝑌)(le‘𝐾)𝑌𝑝(le‘𝐾)𝑌) ↔ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌))
5956, 58bitrd 268 . . . . . . . . . . . . . 14 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → (𝑝(le‘𝐾)𝑌 ↔ ((𝑋 𝑌) 𝑝)(le‘𝐾)𝑌))
6053, 59anbi12d 747 . . . . . . . . . . . . 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 34970 . . . . . . . . . . . . . . . 16 (𝐾 ∈ HL → 𝐾 ∈ Poset)
6238, 61syl 17 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → 𝐾 ∈ Poset)
632, 33latjcl 17098 . . . . . . . . . . . . . . . . 17 ((𝐾 ∈ Lat ∧ (𝑋 𝑌) ∈ 𝐵𝑝𝐵) → ((𝑋 𝑌) 𝑝) ∈ 𝐵)
6439, 42, 43, 63syl3anc 1366 . . . . . . . . . . . . . . . 16 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 𝑌) 𝑝) ∈ 𝐵)
6542, 41, 643jca 1261 . . . . . . . . . . . . . . 15 (((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) → ((𝑋 𝑌) ∈ 𝐵𝑌𝐵 ∧ ((𝑋 𝑌) 𝑝) ∈ 𝐵))
662, 11, 6, 7cvrnbtwn2 34880 . . . . . . . . . . . . . . . . 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 219 . . . . . . . . . . . . . . . 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 1283 . . . . . . . . . . . . . . 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 230 . . . . . . . . . . . 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 448 . . . . . . . . . 10 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → ((𝑋 𝑌) 𝑝) = 𝑌)
7473oveq2d 6706 . . . . . . . . 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 2687 . . . . . . . 8 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝𝐵) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → (𝑋 𝑝) = (𝑋 𝑌))
7619, 75sylanl2 684 . . . . . . 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 4711 . . . . . 6 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) ∧ ((𝑋 𝑌)𝐶𝑌 ∧ (¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌))) → 𝑋𝐶(𝑋 𝑌))
7877expr 642 . . . . 5 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ 𝑝 ∈ (Atoms‘𝐾)) ∧ (𝑋 𝑌)𝐶𝑌) → ((¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌) → 𝑋𝐶(𝑋 𝑌)))
7978an32s 863 . . . 4 ((((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) ∧ (𝑋 𝑌)𝐶𝑌) ∧ 𝑝 ∈ (Atoms‘𝐾)) → ((¬ 𝑝(le‘𝐾)(𝑋 𝑌) ∧ 𝑝(le‘𝐾)𝑌) → 𝑋𝐶(𝑋 𝑌)))
8079rexlimdva 3060 . . 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 449 1 ((𝐾 ∈ HL ∧ 𝑋𝐵𝑌𝐵) → ((𝑋 𝑌)𝐶𝑌𝑋𝐶(𝑋 𝑌)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 383  w3a 1054   = wceq 1523  wcel 2030  wrex 2942   class class class wbr 4685  cfv 5926  (class class class)co 6690  Basecbs 15904  lecple 15995  Posetcpo 16987  ltcplt 16988  joincjn 16991  meetcmee 16992  Latclat 17092  ccvr 34867  Atomscatm 34868  HLchlt 34955
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-rep 4804  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-ral 2946  df-rex 2947  df-reu 2948  df-rab 2950  df-v 3233  df-sbc 3469  df-csb 3567  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-op 4217  df-uni 4469  df-iun 4554  df-br 4686  df-opab 4746  df-mpt 4763  df-id 5053  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-riota 6651  df-ov 6693  df-oprab 6694  df-preset 16975  df-poset 16993  df-plt 17005  df-lub 17021  df-glb 17022  df-join 17023  df-meet 17024  df-p0 17086  df-lat 17093  df-clat 17155  df-oposet 34781  df-ol 34783  df-oml 34784  df-covers 34871  df-ats 34872  df-atl 34903  df-cvlat 34927  df-hlat 34956
This theorem is referenced by:  cvrexch  35024
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