Theorem nodenselem5 27600

Description: Lemma for nodense 27604. If the birthdays of two distinct surreals are equal, then the ordinal from nodenselem4 27599 is an element of that birthday. (Contributed by Scott Fenton, 16-Jun-2011.)

Assertion

Ref	Expression
nodenselem5	⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → ∩ {𝑎 ∈ On ∣ (𝐴‘𝑎) ≠ (𝐵‘𝑎)} ∈ ( bday ‘𝐴))

Distinct variable groups:   𝐴,𝑎   𝐵,𝑎

Proof of Theorem nodenselem5

Step	Hyp	Ref	Expression
1		simpll 766	. . . 4 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → 𝐴 ∈ No )
2		simplr 768	. . . 4 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → 𝐵 ∈ No )
3		sltso 27588	. . . . . . . . . 10 ⊢ <s Or No
4		sonr 5570	. . . . . . . . . 10 ⊢ (( <s Or No ∧ 𝐴 ∈ No ) → ¬ 𝐴 <s 𝐴)
5	3, 4	mpan 690	. . . . . . . . 9 ⊢ (𝐴 ∈ No → ¬ 𝐴 <s 𝐴)
6		breq2 5111	. . . . . . . . . 10 ⊢ (𝐴 = 𝐵 → (𝐴 <s 𝐴 ↔ 𝐴 <s 𝐵))
7	6	notbid 318	. . . . . . . . 9 ⊢ (𝐴 = 𝐵 → (¬ 𝐴 <s 𝐴 ↔ ¬ 𝐴 <s 𝐵))
8	5, 7	syl5ibcom 245	. . . . . . . 8 ⊢ (𝐴 ∈ No → (𝐴 = 𝐵 → ¬ 𝐴 <s 𝐵))
9	8	necon2ad 2940	. . . . . . 7 ⊢ (𝐴 ∈ No → (𝐴 <s 𝐵 → 𝐴 ≠ 𝐵))
10	9	adantr 480	. . . . . 6 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 <s 𝐵 → 𝐴 ≠ 𝐵))
11	10	imp 406	. . . . 5 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ 𝐴 <s 𝐵) → 𝐴 ≠ 𝐵)
12	11	adantrl 716	. . . 4 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → 𝐴 ≠ 𝐵)
13		nosepdm 27596	. . . 4 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐴 ≠ 𝐵) → ∩ {𝑎 ∈ On ∣ (𝐴‘𝑎) ≠ (𝐵‘𝑎)} ∈ (dom 𝐴 ∪ dom 𝐵))
14	1, 2, 12, 13	syl3anc 1373	. . 3 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → ∩ {𝑎 ∈ On ∣ (𝐴‘𝑎) ≠ (𝐵‘𝑎)} ∈ (dom 𝐴 ∪ dom 𝐵))
15		simprl 770	. . . . . 6 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → ( bday ‘𝐴) = ( bday ‘𝐵))
16	15	uneq2d 4131	. . . . 5 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → (( bday ‘𝐴) ∪ ( bday ‘𝐴)) = (( bday ‘𝐴) ∪ ( bday ‘𝐵)))
17		unidm 4120	. . . . 5 ⊢ (( bday ‘𝐴) ∪ ( bday ‘𝐴)) = ( bday ‘𝐴)
18	16, 17	eqtr3di 2779	. . . 4 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → (( bday ‘𝐴) ∪ ( bday ‘𝐵)) = ( bday ‘𝐴))
19		bdayval 27560	. . . . . 6 ⊢ (𝐴 ∈ No → ( bday ‘𝐴) = dom 𝐴)
20	1, 19	syl 17	. . . . 5 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → ( bday ‘𝐴) = dom 𝐴)
21		bdayval 27560	. . . . . 6 ⊢ (𝐵 ∈ No → ( bday ‘𝐵) = dom 𝐵)
22	2, 21	syl 17	. . . . 5 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → ( bday ‘𝐵) = dom 𝐵)
23	20, 22	uneq12d 4132	. . . 4 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → (( bday ‘𝐴) ∪ ( bday ‘𝐵)) = (dom 𝐴 ∪ dom 𝐵))
24	18, 23, 20	3eqtr3d 2772	. . 3 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → (dom 𝐴 ∪ dom 𝐵) = dom 𝐴)
25	14, 24	eleqtrd 2830	. 2 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → ∩ {𝑎 ∈ On ∣ (𝐴‘𝑎) ≠ (𝐵‘𝑎)} ∈ dom 𝐴)
26	25, 20	eleqtrrd 2831	1 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (( bday ‘𝐴) = ( bday ‘𝐵) ∧ 𝐴 <s 𝐵)) → ∩ {𝑎 ∈ On ∣ (𝐴‘𝑎) ≠ (𝐵‘𝑎)} ∈ ( bday ‘𝐴))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 395   = wceq 1540   ∈ wcel 2109   ≠ wne 2925  {crab 3405   ∪ cun 3912  ∩ cint 4910   class class class wbr 5107   Or wor 5545  dom cdm 5638  Oncon0 6332  ‘cfv 6511   No csur 27551   <s cslt 27552   bday cbday 27553

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-sep 5251  ax-nul 5261  ax-pr 5387  ax-un 7711

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-ral 3045  df-rex 3054  df-rab 3406  df-v 3449  df-sbc 3754  df-csb 3863  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-pss 3934  df-nul 4297  df-if 4489  df-pw 4565  df-sn 4590  df-pr 4592  df-tp 4594  df-op 4596  df-uni 4872  df-int 4911  df-br 5108  df-opab 5170  df-mpt 5189  df-tr 5215  df-id 5533  df-eprel 5538  df-po 5546  df-so 5547  df-fr 5591  df-we 5593  df-xp 5644  df-rel 5645  df-cnv 5646  df-co 5647  df-dm 5648  df-rn 5649  df-res 5650  df-ima 5651  df-ord 6335  df-on 6336  df-suc 6338  df-iota 6464  df-fun 6513  df-fn 6514  df-f 6515  df-fv 6519  df-1o 8434  df-2o 8435  df-no 27554  df-slt 27555  df-bday 27556

This theorem is referenced by:  nodenselem8  27603  nodense  27604