Theorem mddmd2 30080

Description: Relationship between modular pairs and dual-modular pairs. Lemma 1.2 of [MaedaMaeda] p. 1. (Contributed by NM, 21-Jun-2004.) (New usage is discouraged.)

Assertion

Ref	Expression
mddmd2	⊢ (𝐴 ∈ Cℋ → (∀𝑥 ∈ Cℋ 𝐴 𝑀ℋ 𝑥 ↔ ∀𝑥 ∈ Cℋ 𝐴 𝑀ℋ* 𝑥))

Distinct variable group:   𝑥,𝐴

Proof of Theorem mddmd2

Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		breq2 5063	. . . . 5 ⊢ (𝑥 = 𝑦 → (𝐴 𝑀ℋ 𝑥 ↔ 𝐴 𝑀ℋ 𝑦))
2	1	cbvralvw 3450	. . . 4 ⊢ (∀𝑥 ∈ Cℋ 𝐴 𝑀ℋ 𝑥 ↔ ∀𝑦 ∈ Cℋ 𝐴 𝑀ℋ 𝑦)
3		mdbr 30065	. . . . . 6 ⊢ ((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) → (𝐴 𝑀ℋ 𝑦 ↔ ∀𝑥 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑥 ∨ℋ 𝐴) ∩ 𝑦) = (𝑥 ∨ℋ (𝐴 ∩ 𝑦)))))
4		incom 4178	. . . . . . . . . . . 12 ⊢ ((𝐴 ∨ℋ 𝑥) ∩ 𝑦) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥))
5		chjcom 29277	. . . . . . . . . . . . 13 ⊢ ((𝐴 ∈ Cℋ ∧ 𝑥 ∈ Cℋ ) → (𝐴 ∨ℋ 𝑥) = (𝑥 ∨ℋ 𝐴))
6	5	ineq1d 4188	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ Cℋ ∧ 𝑥 ∈ Cℋ ) → ((𝐴 ∨ℋ 𝑥) ∩ 𝑦) = ((𝑥 ∨ℋ 𝐴) ∩ 𝑦))
7	4, 6	syl5reqr 2871	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ Cℋ ∧ 𝑥 ∈ Cℋ ) → ((𝑥 ∨ℋ 𝐴) ∩ 𝑦) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))
8	7	adantlr 713	. . . . . . . . . 10 ⊢ (((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → ((𝑥 ∨ℋ 𝐴) ∩ 𝑦) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))
9		incom 4178	. . . . . . . . . . . 12 ⊢ (𝐴 ∩ 𝑦) = (𝑦 ∩ 𝐴)
10	9	oveq1i 7160	. . . . . . . . . . 11 ⊢ ((𝐴 ∩ 𝑦) ∨ℋ 𝑥) = ((𝑦 ∩ 𝐴) ∨ℋ 𝑥)
11		chincl 29270	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) → (𝐴 ∩ 𝑦) ∈ Cℋ )
12		chjcom 29277	. . . . . . . . . . . 12 ⊢ (((𝐴 ∩ 𝑦) ∈ Cℋ ∧ 𝑥 ∈ Cℋ ) → ((𝐴 ∩ 𝑦) ∨ℋ 𝑥) = (𝑥 ∨ℋ (𝐴 ∩ 𝑦)))
13	11, 12	sylan 582	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → ((𝐴 ∩ 𝑦) ∨ℋ 𝑥) = (𝑥 ∨ℋ (𝐴 ∩ 𝑦)))
14	10, 13	syl5reqr 2871	. . . . . . . . . 10 ⊢ (((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → (𝑥 ∨ℋ (𝐴 ∩ 𝑦)) = ((𝑦 ∩ 𝐴) ∨ℋ 𝑥))
15	8, 14	eqeq12d 2837	. . . . . . . . 9 ⊢ (((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → (((𝑥 ∨ℋ 𝐴) ∩ 𝑦) = (𝑥 ∨ℋ (𝐴 ∩ 𝑦)) ↔ (𝑦 ∩ (𝐴 ∨ℋ 𝑥)) = ((𝑦 ∩ 𝐴) ∨ℋ 𝑥)))
16		eqcom 2828	. . . . . . . . 9 ⊢ ((𝑦 ∩ (𝐴 ∨ℋ 𝑥)) = ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) ↔ ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))
17	15, 16	syl6bb 289	. . . . . . . 8 ⊢ (((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → (((𝑥 ∨ℋ 𝐴) ∩ 𝑦) = (𝑥 ∨ℋ (𝐴 ∩ 𝑦)) ↔ ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥))))
18	17	imbi2d 343	. . . . . . 7 ⊢ (((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) ∧ 𝑥 ∈ Cℋ ) → ((𝑥 ⊆ 𝑦 → ((𝑥 ∨ℋ 𝐴) ∩ 𝑦) = (𝑥 ∨ℋ (𝐴 ∩ 𝑦))) ↔ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))))
19	18	ralbidva 3196	. . . . . 6 ⊢ ((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) → (∀𝑥 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑥 ∨ℋ 𝐴) ∩ 𝑦) = (𝑥 ∨ℋ (𝐴 ∩ 𝑦))) ↔ ∀𝑥 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))))
20	3, 19	bitrd 281	. . . . 5 ⊢ ((𝐴 ∈ Cℋ ∧ 𝑦 ∈ Cℋ ) → (𝐴 𝑀ℋ 𝑦 ↔ ∀𝑥 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))))
21	20	ralbidva 3196	. . . 4 ⊢ (𝐴 ∈ Cℋ → (∀𝑦 ∈ Cℋ 𝐴 𝑀ℋ 𝑦 ↔ ∀𝑦 ∈ Cℋ ∀𝑥 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))))
22	2, 21	syl5bb 285	. . 3 ⊢ (𝐴 ∈ Cℋ → (∀𝑥 ∈ Cℋ 𝐴 𝑀ℋ 𝑥 ↔ ∀𝑦 ∈ Cℋ ∀𝑥 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))))
23		ralcom 3354	. . 3 ⊢ (∀𝑦 ∈ Cℋ ∀𝑥 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥))) ↔ ∀𝑥 ∈ Cℋ ∀𝑦 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥))))
24	22, 23	syl6bb 289	. 2 ⊢ (𝐴 ∈ Cℋ → (∀𝑥 ∈ Cℋ 𝐴 𝑀ℋ 𝑥 ↔ ∀𝑥 ∈ Cℋ ∀𝑦 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))))
25		dmdbr 30070	. . 3 ⊢ ((𝐴 ∈ Cℋ ∧ 𝑥 ∈ Cℋ ) → (𝐴 𝑀ℋ* 𝑥 ↔ ∀𝑦 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))))
26	25	ralbidva 3196	. 2 ⊢ (𝐴 ∈ Cℋ → (∀𝑥 ∈ Cℋ 𝐴 𝑀ℋ* 𝑥 ↔ ∀𝑥 ∈ Cℋ ∀𝑦 ∈ Cℋ (𝑥 ⊆ 𝑦 → ((𝑦 ∩ 𝐴) ∨ℋ 𝑥) = (𝑦 ∩ (𝐴 ∨ℋ 𝑥)))))
27	24, 26	bitr4d 284	1 ⊢ (𝐴 ∈ Cℋ → (∀𝑥 ∈ Cℋ 𝐴 𝑀ℋ 𝑥 ↔ ∀𝑥 ∈ Cℋ 𝐴 𝑀ℋ* 𝑥))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   = wceq 1533   ∈ wcel 2110  ∀wral 3138   ∩ cin 3935   ⊆ wss 3936   class class class wbr 5059  (class class class)co 7150   C_ℋ cch 28700   ∨_ℋ chj 28704   𝑀_ℋ cmd 28737   𝑀_ℋ^* cdmd 28738

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2156  ax-12 2172  ax-ext 2793  ax-rep 5183  ax-sep 5196  ax-nul 5203  ax-pow 5259  ax-pr 5322  ax-un 7455  ax-cnex 10587  ax-1cn 10589  ax-addcl 10591  ax-hilex 28770  ax-hfvadd 28771  ax-hv0cl 28774  ax-hfvmul 28776

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-reu 3145  df-rab 3147  df-v 3497  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-pss 3954  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4562  df-pr 4564  df-tp 4566  df-op 4568  df-uni 4833  df-int 4870  df-iun 4914  df-br 5060  df-opab 5122  df-mpt 5140  df-tr 5166  df-id 5455  df-eprel 5460  df-po 5469  df-so 5470  df-fr 5509  df-we 5511  df-xp 5556  df-rel 5557  df-cnv 5558  df-co 5559  df-dm 5560  df-rn 5561  df-res 5562  df-ima 5563  df-pred 6143  df-ord 6189  df-on 6190  df-lim 6191  df-suc 6192  df-iota 6309  df-fun 6352  df-fn 6353  df-f 6354  df-f1 6355  df-fo 6356  df-f1o 6357  df-fv 6358  df-ov 7153  df-oprab 7154  df-mpo 7155  df-om 7575  df-wrecs 7941  df-recs 8002  df-rdg 8040  df-map 8402  df-nn 11633  df-hlim 28743  df-sh 28978  df-ch 28992  df-chj 29081  df-md 30051  df-dmd 30052

This theorem is referenced by:  atmd  30170