Theorem pmod2iN 36987

Description: Dual of the modular law. (Contributed by NM, 8-Apr-2012.) (New usage is discouraged.)

Hypotheses

Ref	Expression
pmod.a	⊢ 𝐴 = (Atoms‘𝐾)
pmod.s	⊢ 𝑆 = (PSubSp‘𝐾)
pmod.p	⊢ + = (+𝑃‘𝐾)

Assertion

Ref	Expression
pmod2iN	⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴)) → (𝑍 ⊆ 𝑋 → ((𝑋 ∩ 𝑌) + 𝑍) = (𝑋 ∩ (𝑌 + 𝑍))))

Proof of Theorem pmod2iN

Step	Hyp	Ref	Expression
1		incom 4180	. . . . . 6 ⊢ (𝑋 ∩ 𝑌) = (𝑌 ∩ 𝑋)
2	1	oveq1i 7168	. . . . 5 ⊢ ((𝑋 ∩ 𝑌) + 𝑍) = ((𝑌 ∩ 𝑋) + 𝑍)
3		hllat 36501	. . . . . . 7 ⊢ (𝐾 ∈ HL → 𝐾 ∈ Lat)
4	3	3ad2ant1 1129	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → 𝐾 ∈ Lat)
5		simp22 1203	. . . . . . 7 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → 𝑌 ⊆ 𝐴)
6		ssinss1 4216	. . . . . . 7 ⊢ (𝑌 ⊆ 𝐴 → (𝑌 ∩ 𝑋) ⊆ 𝐴)
7	5, 6	syl 17	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → (𝑌 ∩ 𝑋) ⊆ 𝐴)
8		simp23 1204	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → 𝑍 ⊆ 𝐴)
9		pmod.a	. . . . . . 7 ⊢ 𝐴 = (Atoms‘𝐾)
10		pmod.p	. . . . . . 7 ⊢ + = (+𝑃‘𝐾)
11	9, 10	paddcom 36951	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ (𝑌 ∩ 𝑋) ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) → ((𝑌 ∩ 𝑋) + 𝑍) = (𝑍 + (𝑌 ∩ 𝑋)))
12	4, 7, 8, 11	syl3anc 1367	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → ((𝑌 ∩ 𝑋) + 𝑍) = (𝑍 + (𝑌 ∩ 𝑋)))
13	2, 12	syl5eq 2870	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → ((𝑋 ∩ 𝑌) + 𝑍) = (𝑍 + (𝑌 ∩ 𝑋)))
14		simp21 1202	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → 𝑋 ∈ 𝑆)
15	8, 5, 14	3jca 1124	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → (𝑍 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ∈ 𝑆))
16		pmod.s	. . . . . . 7 ⊢ 𝑆 = (PSubSp‘𝐾)
17	9, 16, 10	pmod1i 36986	. . . . . 6 ⊢ ((𝐾 ∈ HL ∧ (𝑍 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ∈ 𝑆)) → (𝑍 ⊆ 𝑋 → ((𝑍 + 𝑌) ∩ 𝑋) = (𝑍 + (𝑌 ∩ 𝑋))))
18	17	3impia 1113	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝑍 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑋 ∈ 𝑆) ∧ 𝑍 ⊆ 𝑋) → ((𝑍 + 𝑌) ∩ 𝑋) = (𝑍 + (𝑌 ∩ 𝑋)))
19	15, 18	syld3an2 1407	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → ((𝑍 + 𝑌) ∩ 𝑋) = (𝑍 + (𝑌 ∩ 𝑋)))
20	9, 10	paddcom 36951	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ 𝑍 ⊆ 𝐴 ∧ 𝑌 ⊆ 𝐴) → (𝑍 + 𝑌) = (𝑌 + 𝑍))
21	4, 8, 5, 20	syl3anc 1367	. . . . 5 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → (𝑍 + 𝑌) = (𝑌 + 𝑍))
22	21	ineq1d 4190	. . . 4 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → ((𝑍 + 𝑌) ∩ 𝑋) = ((𝑌 + 𝑍) ∩ 𝑋))
23	13, 19, 22	3eqtr2d 2864	. . 3 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → ((𝑋 ∩ 𝑌) + 𝑍) = ((𝑌 + 𝑍) ∩ 𝑋))
24		incom 4180	. . 3 ⊢ ((𝑌 + 𝑍) ∩ 𝑋) = (𝑋 ∩ (𝑌 + 𝑍))
25	23, 24	syl6eq 2874	. 2 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴) ∧ 𝑍 ⊆ 𝑋) → ((𝑋 ∩ 𝑌) + 𝑍) = (𝑋 ∩ (𝑌 + 𝑍)))
26	25	3expia 1117	1 ⊢ ((𝐾 ∈ HL ∧ (𝑋 ∈ 𝑆 ∧ 𝑌 ⊆ 𝐴 ∧ 𝑍 ⊆ 𝐴)) → (𝑍 ⊆ 𝑋 → ((𝑋 ∩ 𝑌) + 𝑍) = (𝑋 ∩ (𝑌 + 𝑍))))

Syntax hints:   → wi 4   ∧ wa 398   ∧ w3a 1083   = wceq 1537   ∈ wcel 2114   ∩ cin 3937   ⊆ wss 3938  ‘cfv 6357  (class class class)co 7158  Latclat 17657  Atomscatm 36401  HLchlt 36488  PSubSpcpsubsp 36634  +_𝑃cpadd 36933

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-rep 5192  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332  ax-un 7463

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-ral 3145  df-rex 3146  df-reu 3147  df-rab 3149  df-v 3498  df-sbc 3775  df-csb 3886  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-pw 4543  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-iun 4923  df-br 5069  df-opab 5131  df-mpt 5149  df-id 5462  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-iota 6316  df-fun 6359  df-fn 6360  df-f 6361  df-f1 6362  df-fo 6363  df-f1o 6364  df-fv 6365  df-riota 7116  df-ov 7161  df-oprab 7162  df-mpo 7163  df-1st 7691  df-2nd 7692  df-proset 17540  df-poset 17558  df-plt 17570  df-lub 17586  df-glb 17587  df-join 17588  df-meet 17589  df-p0 17651  df-lat 17658  df-covers 36404  df-ats 36405  df-atl 36436  df-cvlat 36460  df-hlat 36489  df-psubsp 36641  df-padd 36934

This theorem is referenced by: (None)