Theorem onomeneqOLD 9012

Description: Obsolete version of onomeneq 9011 as of 29-Nov-2024. (Contributed by NM, 26-Jul-2004.) (Proof modification is discouraged.) (New usage is discouraged.)

Assertion

Ref	Expression
onomeneqOLD	⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ ω) → (𝐴 ≈ 𝐵 ↔ 𝐴 = 𝐵))

Proof of Theorem onomeneqOLD

Step	Hyp	Ref	Expression
1		php5 8997	. . . . . . . . 9 ⊢ (𝐵 ∈ ω → ¬ 𝐵 ≈ suc 𝐵)
2	1	ad2antlr 724	. . . . . . . 8 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → ¬ 𝐵 ≈ suc 𝐵)
3		enen1 8904	. . . . . . . . 9 ⊢ (𝐴 ≈ 𝐵 → (𝐴 ≈ suc 𝐵 ↔ 𝐵 ≈ suc 𝐵))
4	3	adantl 482	. . . . . . . 8 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → (𝐴 ≈ suc 𝐵 ↔ 𝐵 ≈ suc 𝐵))
5	2, 4	mtbird 325	. . . . . . 7 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → ¬ 𝐴 ≈ suc 𝐵)
6		peano2 7737	. . . . . . . . . . . . . 14 ⊢ (𝐵 ∈ ω → suc 𝐵 ∈ ω)
7		sssucid 6343	. . . . . . . . . . . . . 14 ⊢ 𝐵 ⊆ suc 𝐵
8		ssdomg 8786	. . . . . . . . . . . . . 14 ⊢ (suc 𝐵 ∈ ω → (𝐵 ⊆ suc 𝐵 → 𝐵 ≼ suc 𝐵))
9	6, 7, 8	mpisyl 21	. . . . . . . . . . . . 13 ⊢ (𝐵 ∈ ω → 𝐵 ≼ suc 𝐵)
10		endomtr 8798	. . . . . . . . . . . . 13 ⊢ ((𝐴 ≈ 𝐵 ∧ 𝐵 ≼ suc 𝐵) → 𝐴 ≼ suc 𝐵)
11	9, 10	sylan2 593	. . . . . . . . . . . 12 ⊢ ((𝐴 ≈ 𝐵 ∧ 𝐵 ∈ ω) → 𝐴 ≼ suc 𝐵)
12	11	ancoms 459	. . . . . . . . . . 11 ⊢ ((𝐵 ∈ ω ∧ 𝐴 ≈ 𝐵) → 𝐴 ≼ suc 𝐵)
13	12	a1d 25	. . . . . . . . . 10 ⊢ ((𝐵 ∈ ω ∧ 𝐴 ≈ 𝐵) → (ω ⊆ 𝐴 → 𝐴 ≼ suc 𝐵))
14	13	adantll 711	. . . . . . . . 9 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → (ω ⊆ 𝐴 → 𝐴 ≼ suc 𝐵))
15		ssel 3914	. . . . . . . . . . . . . . 15 ⊢ (ω ⊆ 𝐴 → (𝐵 ∈ ω → 𝐵 ∈ 𝐴))
16	15	com12 32	. . . . . . . . . . . . . 14 ⊢ (𝐵 ∈ ω → (ω ⊆ 𝐴 → 𝐵 ∈ 𝐴))
17	16	adantr 481	. . . . . . . . . . . . 13 ⊢ ((𝐵 ∈ ω ∧ 𝐴 ∈ On) → (ω ⊆ 𝐴 → 𝐵 ∈ 𝐴))
18		eloni 6276	. . . . . . . . . . . . . 14 ⊢ (𝐴 ∈ On → Ord 𝐴)
19		ordelsuc 7667	. . . . . . . . . . . . . 14 ⊢ ((𝐵 ∈ ω ∧ Ord 𝐴) → (𝐵 ∈ 𝐴 ↔ suc 𝐵 ⊆ 𝐴))
20	18, 19	sylan2 593	. . . . . . . . . . . . 13 ⊢ ((𝐵 ∈ ω ∧ 𝐴 ∈ On) → (𝐵 ∈ 𝐴 ↔ suc 𝐵 ⊆ 𝐴))
21	17, 20	sylibd 238	. . . . . . . . . . . 12 ⊢ ((𝐵 ∈ ω ∧ 𝐴 ∈ On) → (ω ⊆ 𝐴 → suc 𝐵 ⊆ 𝐴))
22		ssdomg 8786	. . . . . . . . . . . . 13 ⊢ (𝐴 ∈ On → (suc 𝐵 ⊆ 𝐴 → suc 𝐵 ≼ 𝐴))
23	22	adantl 482	. . . . . . . . . . . 12 ⊢ ((𝐵 ∈ ω ∧ 𝐴 ∈ On) → (suc 𝐵 ⊆ 𝐴 → suc 𝐵 ≼ 𝐴))
24	21, 23	syld 47	. . . . . . . . . . 11 ⊢ ((𝐵 ∈ ω ∧ 𝐴 ∈ On) → (ω ⊆ 𝐴 → suc 𝐵 ≼ 𝐴))
25	24	ancoms 459	. . . . . . . . . 10 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ ω) → (ω ⊆ 𝐴 → suc 𝐵 ≼ 𝐴))
26	25	adantr 481	. . . . . . . . 9 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → (ω ⊆ 𝐴 → suc 𝐵 ≼ 𝐴))
27	14, 26	jcad 513	. . . . . . . 8 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → (ω ⊆ 𝐴 → (𝐴 ≼ suc 𝐵 ∧ suc 𝐵 ≼ 𝐴)))
28		sbth 8880	. . . . . . . 8 ⊢ ((𝐴 ≼ suc 𝐵 ∧ suc 𝐵 ≼ 𝐴) → 𝐴 ≈ suc 𝐵)
29	27, 28	syl6 35	. . . . . . 7 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → (ω ⊆ 𝐴 → 𝐴 ≈ suc 𝐵))
30	5, 29	mtod 197	. . . . . 6 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → ¬ ω ⊆ 𝐴)
31		ordom 7722	. . . . . . . . 9 ⊢ Ord ω
32		ordtri1 6299	. . . . . . . . 9 ⊢ ((Ord ω ∧ Ord 𝐴) → (ω ⊆ 𝐴 ↔ ¬ 𝐴 ∈ ω))
33	31, 18, 32	sylancr 587	. . . . . . . 8 ⊢ (𝐴 ∈ On → (ω ⊆ 𝐴 ↔ ¬ 𝐴 ∈ ω))
34	33	con2bid 355	. . . . . . 7 ⊢ (𝐴 ∈ On → (𝐴 ∈ ω ↔ ¬ ω ⊆ 𝐴))
35	34	ad2antrr 723	. . . . . 6 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → (𝐴 ∈ ω ↔ ¬ ω ⊆ 𝐴))
36	30, 35	mpbird 256	. . . . 5 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → 𝐴 ∈ ω)
37		simplr 766	. . . . 5 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → 𝐵 ∈ ω)
38	36, 37	jca 512	. . . 4 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → (𝐴 ∈ ω ∧ 𝐵 ∈ ω))
39		nneneq 8992	. . . . 5 ⊢ ((𝐴 ∈ ω ∧ 𝐵 ∈ ω) → (𝐴 ≈ 𝐵 ↔ 𝐴 = 𝐵))
40	39	biimpa 477	. . . 4 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → 𝐴 = 𝐵)
41	38, 40	sylancom 588	. . 3 ⊢ (((𝐴 ∈ On ∧ 𝐵 ∈ ω) ∧ 𝐴 ≈ 𝐵) → 𝐴 = 𝐵)
42	41	ex 413	. 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ ω) → (𝐴 ≈ 𝐵 → 𝐴 = 𝐵))
43		eqeng 8774	. . 3 ⊢ (𝐴 ∈ On → (𝐴 = 𝐵 → 𝐴 ≈ 𝐵))
44	43	adantr 481	. 2 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ ω) → (𝐴 = 𝐵 → 𝐴 ≈ 𝐵))
45	42, 44	impbid 211	1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ ω) → (𝐴 ≈ 𝐵 ↔ 𝐴 = 𝐵))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 205   ∧ wa 396   = wceq 1539   ∈ wcel 2106   ⊆ wss 3887   class class class wbr 5074  Ord word 6265  Oncon0 6266  suc csuc 6268  ωcom 7712   ≈ cen 8730   ≼ cdom 8731

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-mpt 5158  df-tr 5192  df-id 5489  df-eprel 5495  df-po 5503  df-so 5504  df-fr 5544  df-we 5546  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-ord 6269  df-on 6270  df-lim 6271  df-suc 6272  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-om 7713  df-1o 8297  df-er 8498  df-en 8734  df-dom 8735  df-sdom 8736  df-fin 8737

This theorem is referenced by: (None)