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Theorem mulsproplem6 28276

Description: Lemma for surreal multiplication. Show one of the inequalities involved in surreal multiplication's cuts. (Contributed by Scott Fenton, 5-Mar-2025.)

**Hypotheses**
Ref	Expression
mulsproplem.1	⊢ (𝜑 → ∀𝑎 ∈ No ∀𝑏 ∈ No ∀𝑐 ∈ No ∀𝑑 ∈ No ∀𝑒 ∈ No ∀𝑓 ∈ No (((( bday ‘𝑎) +no ( bday ‘𝑏)) ∪ (((( bday ‘𝑐) +no ( bday ‘𝑒)) ∪ (( bday ‘𝑑) +no ( bday ‘𝑓))) ∪ ((( bday ‘𝑐) +no ( bday ‘𝑓)) ∪ (( bday ‘𝑑) +no ( bday ‘𝑒))))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))) → ((𝑎 ·_s 𝑏) ∈ No ∧ ((𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓) → ((𝑐 ·_s 𝑓) -_s (𝑐 ·_s 𝑒)) <s ((𝑑 ·_s 𝑓) -_s (𝑑 ·_s 𝑒))))))
mulsproplem6.1	⊢ (𝜑 → 𝐴 ∈ No )
mulsproplem6.2	⊢ (𝜑 → 𝐵 ∈ No )
mulsproplem6.3	⊢ (𝜑 → 𝑃 ∈ ( L ‘𝐴))
mulsproplem6.4	⊢ (𝜑 → 𝑄 ∈ ( L ‘𝐵))
mulsproplem6.5	⊢ (𝜑 → 𝑉 ∈ ( R ‘𝐴))
mulsproplem6.6	⊢ (𝜑 → 𝑊 ∈ ( L ‘𝐵))

**Assertion**
Ref	Expression
mulsproplem6	⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)))

Distinct variable groups: 𝐴,𝑎,𝑏,𝑐,𝑑,𝑒,𝑓 𝐵,𝑎,𝑏,𝑐,𝑑,𝑒,𝑓 𝐶,𝑎,𝑏,𝑐,𝑑,𝑒,𝑓 𝐷,𝑎,𝑏,𝑐,𝑑,𝑒,𝑓 𝐸,𝑎,𝑏,𝑐,𝑑,𝑒,𝑓 𝐹,𝑎,𝑏,𝑐,𝑑,𝑒,𝑓 𝑃,𝑎,𝑏,𝑐,𝑑,𝑒,𝑓 𝑄,𝑏,𝑐,𝑑,𝑒,𝑓 𝑉,𝑎,𝑏,𝑐,𝑑,𝑒,𝑓 𝑊,𝑏,𝑐,𝑑,𝑒,𝑓 Allowed substitution hints: 𝜑(𝑒,𝑓,𝑎,𝑏,𝑐,𝑑) 𝑄(𝑎) 𝑊(𝑎)

**Proof of Theorem mulsproplem6**
Step	Hyp	Ref	Expression
1		mulsproplem6.4	. . . 4 ⊢ (𝜑 → 𝑄 ∈ ( L ‘𝐵))
2	1	leftnod 28035	. . 3 ⊢ (𝜑 → 𝑄 ∈ No )
3		mulsproplem6.6	. . . 4 ⊢ (𝜑 → 𝑊 ∈ ( L ‘𝐵))
4	3	leftnod 28035	. . 3 ⊢ (𝜑 → 𝑊 ∈ No )
5		ltslin 27875	. . 3 ⊢ ((𝑄 ∈ No ∧ 𝑊 ∈ No ) → (𝑄 <s 𝑊 ∨ 𝑄 = 𝑊 ∨ 𝑊 <s 𝑄))
6	2, 4, 5	syl2anc 595	. 2 ⊢ (𝜑 → (𝑄 <s 𝑊 ∨ 𝑄 = 𝑊 ∨ 𝑊 <s 𝑄))
7		mulsproplem.1	. . . . . . . . 9 ⊢ (𝜑 → ∀𝑎 ∈ No ∀𝑏 ∈ No ∀𝑐 ∈ No ∀𝑑 ∈ No ∀𝑒 ∈ No ∀𝑓 ∈ No (((( bday ‘𝑎) +no ( bday ‘𝑏)) ∪ (((( bday ‘𝑐) +no ( bday ‘𝑒)) ∪ (( bday ‘𝑑) +no ( bday ‘𝑓))) ∪ ((( bday ‘𝑐) +no ( bday ‘𝑓)) ∪ (( bday ‘𝑑) +no ( bday ‘𝑒))))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))) → ((𝑎 ·_s 𝑏) ∈ No ∧ ((𝑐 <s 𝑑 ∧ 𝑒 <s 𝑓) → ((𝑐 ·_s 𝑓) -_s (𝑐 ·_s 𝑒)) <s ((𝑑 ·_s 𝑓) -_s (𝑑 ·_s 𝑒))))))
8		mulsproplem6.3	. . . . . . . . . 10 ⊢ (𝜑 → 𝑃 ∈ ( L ‘𝐴))
9	8	leftoldd 28034	. . . . . . . . 9 ⊢ (𝜑 → 𝑃 ∈ ( O ‘( bday ‘𝐴)))
10		mulsproplem6.2	. . . . . . . . 9 ⊢ (𝜑 → 𝐵 ∈ No )
11	7, 9, 10	mulsproplem2 28272	. . . . . . . 8 ⊢ (𝜑 → (𝑃 ·_s 𝐵) ∈ No )
12		mulsproplem6.1	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 ∈ No )
13	1	leftoldd 28034	. . . . . . . . 9 ⊢ (𝜑 → 𝑄 ∈ ( O ‘( bday ‘𝐵)))
14	7, 12, 13	mulsproplem3 28273	. . . . . . . 8 ⊢ (𝜑 → (𝐴 ·_s 𝑄) ∈ No )
15	11, 14	addscld 28135	. . . . . . 7 ⊢ (𝜑 → ((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) ∈ No )
16	7, 9, 13	mulsproplem4 28274	. . . . . . 7 ⊢ (𝜑 → (𝑃 ·_s 𝑄) ∈ No )
17	15, 16	subscld 28218	. . . . . 6 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) ∈ No )
18	17	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) ∈ No )
19	3	leftoldd 28034	. . . . . . . . 9 ⊢ (𝜑 → 𝑊 ∈ ( O ‘( bday ‘𝐵)))
20	7, 12, 19	mulsproplem3 28273	. . . . . . . 8 ⊢ (𝜑 → (𝐴 ·_s 𝑊) ∈ No )
21	11, 20	addscld 28135	. . . . . . 7 ⊢ (𝜑 → ((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) ∈ No )
22	7, 9, 19	mulsproplem4 28274	. . . . . . 7 ⊢ (𝜑 → (𝑃 ·_s 𝑊) ∈ No )
23	21, 22	subscld 28218	. . . . . 6 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)) ∈ No )
24	23	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)) ∈ No )
25		mulsproplem6.5	. . . . . . . . . 10 ⊢ (𝜑 → 𝑉 ∈ ( R ‘𝐴))
26	25	rightoldd 28036	. . . . . . . . 9 ⊢ (𝜑 → 𝑉 ∈ ( O ‘( bday ‘𝐴)))
27	7, 26, 10	mulsproplem2 28272	. . . . . . . 8 ⊢ (𝜑 → (𝑉 ·_s 𝐵) ∈ No )
28	27, 20	addscld 28135	. . . . . . 7 ⊢ (𝜑 → ((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) ∈ No )
29	7, 26, 19	mulsproplem4 28274	. . . . . . 7 ⊢ (𝜑 → (𝑉 ·_s 𝑊) ∈ No )
30	28, 29	subscld 28218	. . . . . 6 ⊢ (𝜑 → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)) ∈ No )
31	30	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)) ∈ No )
32		sltsleft 28015	. . . . . . . . . . 11 ⊢ (𝐴 ∈ No → ( L ‘𝐴) <<s {𝐴})
33	12, 32	syl 18	. . . . . . . . . 10 ⊢ (𝜑 → ( L ‘𝐴) <<s {𝐴})
34		snidg 4628	. . . . . . . . . . 11 ⊢ (𝐴 ∈ No → 𝐴 ∈ {𝐴})
35	12, 34	syl 18	. . . . . . . . . 10 ⊢ (𝜑 → 𝐴 ∈ {𝐴})
36	33, 8, 35	sltssepcd 27927	. . . . . . . . 9 ⊢ (𝜑 → 𝑃 <s 𝐴)
37		0no 27964	. . . . . . . . . . . 12 ⊢ 0_s ∈ No
38	37	a1i 11	. . . . . . . . . . 11 ⊢ (𝜑 → 0_s ∈ No )
39	8	leftnod 28035	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑃 ∈ No )
40		bday0 27966	. . . . . . . . . . . . . . . 16 ⊢ ( bday ‘ 0_s ) = ∅
41	40, 40	oveq12i 7420	. . . . . . . . . . . . . . 15 ⊢ (( bday ‘ 0_s ) +no ( bday ‘ 0_s )) = (∅ +no ∅)
42		0elon 6414	. . . . . . . . . . . . . . . 16 ⊢ ∅ ∈ On
43		naddrid 8666	. . . . . . . . . . . . . . . 16 ⊢ (∅ ∈ On → (∅ +no ∅) = ∅)
44	42, 43	ax-mp 5	. . . . . . . . . . . . . . 15 ⊢ (∅ +no ∅) = ∅
45	41, 44	eqtri 2792	. . . . . . . . . . . . . 14 ⊢ (( bday ‘ 0_s ) +no ( bday ‘ 0_s )) = ∅
46	45	uneq1i 4126	. . . . . . . . . . . . 13 ⊢ ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))))) = (∅ ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄)))))
47		0un 4359	. . . . . . . . . . . . 13 ⊢ (∅ ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))))) = (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))))
48	46, 47	eqtri 2792	. . . . . . . . . . . 12 ⊢ ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))))) = (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))))
49		oldbdayim 28044	. . . . . . . . . . . . . . . . 17 ⊢ (𝑃 ∈ ( O ‘( bday ‘𝐴)) → ( bday ‘𝑃) ∈ ( bday ‘𝐴))
50	9, 49	syl 18	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → ( bday ‘𝑃) ∈ ( bday ‘𝐴))
51		oldbdayim 28044	. . . . . . . . . . . . . . . . 17 ⊢ (𝑄 ∈ ( O ‘( bday ‘𝐵)) → ( bday ‘𝑄) ∈ ( bday ‘𝐵))
52	13, 51	syl 18	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → ( bday ‘𝑄) ∈ ( bday ‘𝐵))
53		bdayon 27907	. . . . . . . . . . . . . . . . 17 ⊢ ( bday ‘𝐴) ∈ On
54		bdayon 27907	. . . . . . . . . . . . . . . . 17 ⊢ ( bday ‘𝐵) ∈ On
55		naddel12 8683	. . . . . . . . . . . . . . . . 17 ⊢ ((( bday ‘𝐴) ∈ On ∧ ( bday ‘𝐵) ∈ On) → ((( bday ‘𝑃) ∈ ( bday ‘𝐴) ∧ ( bday ‘𝑄) ∈ ( bday ‘𝐵)) → (( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
56	53, 54, 55	mp2an 704	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑃) ∈ ( bday ‘𝐴) ∧ ( bday ‘𝑄) ∈ ( bday ‘𝐵)) → (( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
57	50, 52, 56	syl2anc 595	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
58		oldbdayim 28044	. . . . . . . . . . . . . . . . 17 ⊢ (𝑊 ∈ ( O ‘( bday ‘𝐵)) → ( bday ‘𝑊) ∈ ( bday ‘𝐵))
59	19, 58	syl 18	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → ( bday ‘𝑊) ∈ ( bday ‘𝐵))
60		bdayon 27907	. . . . . . . . . . . . . . . . 17 ⊢ ( bday ‘𝑊) ∈ On
61		naddel2 8671	. . . . . . . . . . . . . . . . 17 ⊢ ((( bday ‘𝑊) ∈ On ∧ ( bday ‘𝐵) ∈ On ∧ ( bday ‘𝐴) ∈ On) → (( bday ‘𝑊) ∈ ( bday ‘𝐵) ↔ (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
62	60, 54, 53, 61	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (( bday ‘𝑊) ∈ ( bday ‘𝐵) ↔ (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
63	59, 62	sylib 221	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
64	57, 63	jca 520	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
65		naddel12 8683	. . . . . . . . . . . . . . . . 17 ⊢ ((( bday ‘𝐴) ∈ On ∧ ( bday ‘𝐵) ∈ On) → ((( bday ‘𝑃) ∈ ( bday ‘𝐴) ∧ ( bday ‘𝑊) ∈ ( bday ‘𝐵)) → (( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
66	53, 54, 65	mp2an 704	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑃) ∈ ( bday ‘𝐴) ∧ ( bday ‘𝑊) ∈ ( bday ‘𝐵)) → (( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
67	50, 59, 66	syl2anc 595	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
68		bdayon 27907	. . . . . . . . . . . . . . . . 17 ⊢ ( bday ‘𝑄) ∈ On
69		naddel2 8671	. . . . . . . . . . . . . . . . 17 ⊢ ((( bday ‘𝑄) ∈ On ∧ ( bday ‘𝐵) ∈ On ∧ ( bday ‘𝐴) ∈ On) → (( bday ‘𝑄) ∈ ( bday ‘𝐵) ↔ (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
70	68, 54, 53, 69	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (( bday ‘𝑄) ∈ ( bday ‘𝐵) ↔ (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
71	52, 70	sylib 221	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
72	67, 71	jca 520	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
73		bdayon 27907	. . . . . . . . . . . . . . . . . 18 ⊢ ( bday ‘𝑃) ∈ On
74		naddcl 8659	. . . . . . . . . . . . . . . . . 18 ⊢ ((( bday ‘𝑃) ∈ On ∧ ( bday ‘𝑄) ∈ On) → (( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ On)
75	73, 68, 74	mp2an 704	. . . . . . . . . . . . . . . . 17 ⊢ (( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ On
76		naddcl 8659	. . . . . . . . . . . . . . . . . 18 ⊢ ((( bday ‘𝐴) ∈ On ∧ ( bday ‘𝑊) ∈ On) → (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ On)
77	53, 60, 76	mp2an 704	. . . . . . . . . . . . . . . . 17 ⊢ (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ On
78	75, 77	onun2i 6482	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∈ On
79		naddcl 8659	. . . . . . . . . . . . . . . . . 18 ⊢ ((( bday ‘𝑃) ∈ On ∧ ( bday ‘𝑊) ∈ On) → (( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ On)
80	73, 60, 79	mp2an 704	. . . . . . . . . . . . . . . . 17 ⊢ (( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ On
81		naddcl 8659	. . . . . . . . . . . . . . . . . 18 ⊢ ((( bday ‘𝐴) ∈ On ∧ ( bday ‘𝑄) ∈ On) → (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ On)
82	53, 68, 81	mp2an 704	. . . . . . . . . . . . . . . . 17 ⊢ (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ On
83	80, 82	onun2i 6482	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))) ∈ On
84		naddcl 8659	. . . . . . . . . . . . . . . . 17 ⊢ ((( bday ‘𝐴) ∈ On ∧ ( bday ‘𝐵) ∈ On) → (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On)
85	53, 54, 84	mp2an 704	. . . . . . . . . . . . . . . 16 ⊢ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On
86		onunel 6466	. . . . . . . . . . . . . . . 16 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∈ On ∧ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
87	78, 83, 85, 86	mp3an 1487	. . . . . . . . . . . . . . 15 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
88		onunel 6466	. . . . . . . . . . . . . . . . 17 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
89	75, 77, 85, 88	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
90		onunel 6466	. . . . . . . . . . . . . . . . 17 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
91	80, 82, 85, 90	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
92	89, 91	anbi12i 639	. . . . . . . . . . . . . . 15 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ∧ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
93	87, 92	bitri 278	. . . . . . . . . . . . . 14 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ∧ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
94	64, 72, 93	sylanbrc 594	. . . . . . . . . . . . 13 ⊢ (𝜑 → (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
95		elun1 4143	. . . . . . . . . . . . 13 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) → (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄)))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
96	94, 95	syl 18	. . . . . . . . . . . 12 ⊢ (𝜑 → (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄)))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
97	48, 96	eqeltrid 2873	. . . . . . . . . . 11 ⊢ (𝜑 → ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑊))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝐴) +no ( bday ‘𝑄))))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
98	7, 38, 38, 39, 12, 2, 4, 97	mulsproplem1 28271	. . . . . . . . . 10 ⊢ (𝜑 → (( 0_s ·_s 0_s ) ∈ No ∧ ((𝑃 <s 𝐴 ∧ 𝑄 <s 𝑊) → ((𝑃 ·_s 𝑊) -_s (𝑃 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝐴 ·_s 𝑄)))))
99	98	simprd 500	. . . . . . . . 9 ⊢ (𝜑 → ((𝑃 <s 𝐴 ∧ 𝑄 <s 𝑊) → ((𝑃 ·_s 𝑊) -_s (𝑃 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝐴 ·_s 𝑄))))
100	36, 99	mpand 707	. . . . . . . 8 ⊢ (𝜑 → (𝑄 <s 𝑊 → ((𝑃 ·_s 𝑊) -_s (𝑃 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝐴 ·_s 𝑄))))
101	100	imp 411	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → ((𝑃 ·_s 𝑊) -_s (𝑃 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝐴 ·_s 𝑄)))
102	22, 20, 16, 14	ltsubsubs3bd 28240	. . . . . . . . 9 ⊢ (𝜑 → (((𝑃 ·_s 𝑊) -_s (𝑃 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝐴 ·_s 𝑄)) ↔ ((𝐴 ·_s 𝑄) -_s (𝑃 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝑃 ·_s 𝑊))))
103	14, 16	subscld 28218	. . . . . . . . . 10 ⊢ (𝜑 → ((𝐴 ·_s 𝑄) -_s (𝑃 ·_s 𝑄)) ∈ No )
104	20, 22	subscld 28218	. . . . . . . . . 10 ⊢ (𝜑 → ((𝐴 ·_s 𝑊) -_s (𝑃 ·_s 𝑊)) ∈ No )
105	103, 104, 11	ltadds2d 28152	. . . . . . . . 9 ⊢ (𝜑 → (((𝐴 ·_s 𝑄) -_s (𝑃 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝑃 ·_s 𝑊)) ↔ ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑃 ·_s 𝑄))) <s ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑃 ·_s 𝑊)))))
106	102, 105	bitrd 282	. . . . . . . 8 ⊢ (𝜑 → (((𝑃 ·_s 𝑊) -_s (𝑃 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝐴 ·_s 𝑄)) ↔ ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑃 ·_s 𝑄))) <s ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑃 ·_s 𝑊)))))
107	106	adantr 485	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → (((𝑃 ·_s 𝑊) -_s (𝑃 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝐴 ·_s 𝑄)) ↔ ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑃 ·_s 𝑄))) <s ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑃 ·_s 𝑊)))))
108	101, 107	mpbid 235	. . . . . 6 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑃 ·_s 𝑄))) <s ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑃 ·_s 𝑊))))
109	11, 14, 16	addsubsassd 28236	. . . . . . 7 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) = ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑃 ·_s 𝑄))))
110	109	adantr 485	. . . . . 6 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) = ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑃 ·_s 𝑄))))
111	11, 20, 22	addsubsassd 28236	. . . . . . 7 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)) = ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑃 ·_s 𝑊))))
112	111	adantr 485	. . . . . 6 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)) = ((𝑃 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑃 ·_s 𝑊))))
113	108, 110, 112	3brtr4d 5144	. . . . 5 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)))
114		lltr 28017	. . . . . . . . . . 11 ⊢ ( L ‘𝐴) <<s ( R ‘𝐴)
115	114	a1i 11	. . . . . . . . . 10 ⊢ (𝜑 → ( L ‘𝐴) <<s ( R ‘𝐴))
116	115, 8, 25	sltssepcd 27927	. . . . . . . . 9 ⊢ (𝜑 → 𝑃 <s 𝑉)
117		sltsleft 28015	. . . . . . . . . . 11 ⊢ (𝐵 ∈ No → ( L ‘𝐵) <<s {𝐵})
118	10, 117	syl 18	. . . . . . . . . 10 ⊢ (𝜑 → ( L ‘𝐵) <<s {𝐵})
119		snidg 4628	. . . . . . . . . . 11 ⊢ (𝐵 ∈ No → 𝐵 ∈ {𝐵})
120	10, 119	syl 18	. . . . . . . . . 10 ⊢ (𝜑 → 𝐵 ∈ {𝐵})
121	118, 3, 120	sltssepcd 27927	. . . . . . . . 9 ⊢ (𝜑 → 𝑊 <s 𝐵)
122	25	rightnod 28037	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑉 ∈ No )
123	45	uneq1i 4126	. . . . . . . . . . . . 13 ⊢ ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))) = (∅ ∪ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))))
124		0un 4359	. . . . . . . . . . . . 13 ⊢ (∅ ∪ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))) = (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))
125	123, 124	eqtri 2792	. . . . . . . . . . . 12 ⊢ ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))) = (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))
126		oldbdayim 28044	. . . . . . . . . . . . . . . . 17 ⊢ (𝑉 ∈ ( O ‘( bday ‘𝐴)) → ( bday ‘𝑉) ∈ ( bday ‘𝐴))
127	26, 126	syl 18	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → ( bday ‘𝑉) ∈ ( bday ‘𝐴))
128		bdayon 27907	. . . . . . . . . . . . . . . . 17 ⊢ ( bday ‘𝑉) ∈ On
129		naddel1 8670	. . . . . . . . . . . . . . . . 17 ⊢ ((( bday ‘𝑉) ∈ On ∧ ( bday ‘𝐴) ∈ On ∧ ( bday ‘𝐵) ∈ On) → (( bday ‘𝑉) ∈ ( bday ‘𝐴) ↔ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
130	128, 53, 54, 129	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (( bday ‘𝑉) ∈ ( bday ‘𝐴) ↔ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
131	127, 130	sylib 221	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
132	67, 131	jca 520	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
133		naddel1 8670	. . . . . . . . . . . . . . . . 17 ⊢ ((( bday ‘𝑃) ∈ On ∧ ( bday ‘𝐴) ∈ On ∧ ( bday ‘𝐵) ∈ On) → (( bday ‘𝑃) ∈ ( bday ‘𝐴) ↔ (( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
134	73, 53, 54, 133	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (( bday ‘𝑃) ∈ ( bday ‘𝐴) ↔ (( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
135	50, 134	sylib 221	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
136		naddel12 8683	. . . . . . . . . . . . . . . . 17 ⊢ ((( bday ‘𝐴) ∈ On ∧ ( bday ‘𝐵) ∈ On) → ((( bday ‘𝑉) ∈ ( bday ‘𝐴) ∧ ( bday ‘𝑊) ∈ ( bday ‘𝐵)) → (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
137	53, 54, 136	mp2an 704	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑉) ∈ ( bday ‘𝐴) ∧ ( bday ‘𝑊) ∈ ( bday ‘𝐵)) → (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
138	127, 59, 137	syl2anc 595	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
139	135, 138	jca 520	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
140		naddcl 8659	. . . . . . . . . . . . . . . . . 18 ⊢ ((( bday ‘𝑉) ∈ On ∧ ( bday ‘𝐵) ∈ On) → (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ On)
141	128, 54, 140	mp2an 704	. . . . . . . . . . . . . . . . 17 ⊢ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ On
142	80, 141	onun2i 6482	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ On
143		naddcl 8659	. . . . . . . . . . . . . . . . . 18 ⊢ ((( bday ‘𝑃) ∈ On ∧ ( bday ‘𝐵) ∈ On) → (( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ On)
144	73, 54, 143	mp2an 704	. . . . . . . . . . . . . . . . 17 ⊢ (( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ On
145		naddcl 8659	. . . . . . . . . . . . . . . . . 18 ⊢ ((( bday ‘𝑉) ∈ On ∧ ( bday ‘𝑊) ∈ On) → (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ On)
146	128, 60, 145	mp2an 704	. . . . . . . . . . . . . . . . 17 ⊢ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ On
147	144, 146	onun2i 6482	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ On
148		onunel 6466	. . . . . . . . . . . . . . . 16 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ On ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → ((((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
149	142, 147, 85, 148	mp3an 1487	. . . . . . . . . . . . . . 15 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
150		onunel 6466	. . . . . . . . . . . . . . . . 17 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ On ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
151	80, 141, 85, 150	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
152		onunel 6466	. . . . . . . . . . . . . . . . 17 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ On ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → (((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
153	144, 146, 85, 152	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
154	151, 153	anbi12i 639	. . . . . . . . . . . . . . 15 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
155	149, 154	bitri 278	. . . . . . . . . . . . . 14 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
156	132, 139, 155	sylanbrc 594	. . . . . . . . . . . . 13 ⊢ (𝜑 → (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
157		elun1 4143	. . . . . . . . . . . . 13 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) → (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
158	156, 157	syl 18	. . . . . . . . . . . 12 ⊢ (𝜑 → (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
159	125, 158	eqeltrid 2873	. . . . . . . . . . 11 ⊢ (𝜑 → ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝑃) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
160	7, 38, 38, 39, 122, 4, 10, 159	mulsproplem1 28271	. . . . . . . . . 10 ⊢ (𝜑 → (( 0_s ·_s 0_s ) ∈ No ∧ ((𝑃 <s 𝑉 ∧ 𝑊 <s 𝐵) → ((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑊)) <s ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑊)))))
161	160	simprd 500	. . . . . . . . 9 ⊢ (𝜑 → ((𝑃 <s 𝑉 ∧ 𝑊 <s 𝐵) → ((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑊)) <s ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑊))))
162	116, 121, 161	mp2and 711	. . . . . . . 8 ⊢ (𝜑 → ((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑊)) <s ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑊)))
163	11, 22	subscld 28218	. . . . . . . . 9 ⊢ (𝜑 → ((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑊)) ∈ No )
164	27, 29	subscld 28218	. . . . . . . . 9 ⊢ (𝜑 → ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑊)) ∈ No )
165	163, 164, 20	ltadds1d 28153	. . . . . . . 8 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑊)) <s ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑊)) ↔ (((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑊)) +_s (𝐴 ·_s 𝑊)) <s (((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑊)) +_s (𝐴 ·_s 𝑊))))
166	162, 165	mpbid 235	. . . . . . 7 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑊)) +_s (𝐴 ·_s 𝑊)) <s (((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑊)) +_s (𝐴 ·_s 𝑊)))
167	11, 20, 22	addsubsd 28237	. . . . . . 7 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)) = (((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑊)) +_s (𝐴 ·_s 𝑊)))
168	27, 20, 29	addsubsd 28237	. . . . . . 7 ⊢ (𝜑 → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)) = (((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑊)) +_s (𝐴 ·_s 𝑊)))
169	166, 167, 168	3brtr4d 5144	. . . . . 6 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)))
170	169	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)))
171	18, 24, 31, 113, 170	ltstrd 27889	. . . 4 ⊢ ((𝜑 ∧ 𝑄 <s 𝑊) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)))
172	171	ex 417	. . 3 ⊢ (𝜑 → (𝑄 <s 𝑊 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊))))
173		oveq2 7416	. . . . . . 7 ⊢ (𝑄 = 𝑊 → (𝐴 ·_s 𝑄) = (𝐴 ·_s 𝑊))
174	173	oveq2d 7424	. . . . . 6 ⊢ (𝑄 = 𝑊 → ((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) = ((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)))
175		oveq2 7416	. . . . . 6 ⊢ (𝑄 = 𝑊 → (𝑃 ·_s 𝑄) = (𝑃 ·_s 𝑊))
176	174, 175	oveq12d 7426	. . . . 5 ⊢ (𝑄 = 𝑊 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) = (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)))
177	176	breq1d 5120	. . . 4 ⊢ (𝑄 = 𝑊 → ((((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)) ↔ (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑃 ·_s 𝑊)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊))))
178	169, 177	syl5ibrcom 250	. . 3 ⊢ (𝜑 → (𝑄 = 𝑊 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊))))
179	17	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) ∈ No )
180	27, 14	addscld 28135	. . . . . . 7 ⊢ (𝜑 → ((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) ∈ No )
181	7, 26, 13	mulsproplem4 28274	. . . . . . 7 ⊢ (𝜑 → (𝑉 ·_s 𝑄) ∈ No )
182	180, 181	subscld 28218	. . . . . 6 ⊢ (𝜑 → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑉 ·_s 𝑄)) ∈ No )
183	182	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑉 ·_s 𝑄)) ∈ No )
184	30	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)) ∈ No )
185	118, 1, 120	sltssepcd 27927	. . . . . . . . 9 ⊢ (𝜑 → 𝑄 <s 𝐵)
186	45	uneq1i 4126	. . . . . . . . . . . . 13 ⊢ ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))))) = (∅ ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄)))))
187		0un 4359	. . . . . . . . . . . . 13 ⊢ (∅ ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))))) = (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))))
188	186, 187	eqtri 2792	. . . . . . . . . . . 12 ⊢ ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))))) = (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))))
189	57, 131	jca 520	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
190		naddel12 8683	. . . . . . . . . . . . . . . . 17 ⊢ ((( bday ‘𝐴) ∈ On ∧ ( bday ‘𝐵) ∈ On) → ((( bday ‘𝑉) ∈ ( bday ‘𝐴) ∧ ( bday ‘𝑄) ∈ ( bday ‘𝐵)) → (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
191	53, 54, 190	mp2an 704	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑉) ∈ ( bday ‘𝐴) ∧ ( bday ‘𝑄) ∈ ( bday ‘𝐵)) → (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
192	127, 52, 191	syl2anc 595	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
193	135, 192	jca 520	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
194	75, 141	onun2i 6482	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ On
195		naddcl 8659	. . . . . . . . . . . . . . . . . 18 ⊢ ((( bday ‘𝑉) ∈ On ∧ ( bday ‘𝑄) ∈ On) → (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ On)
196	128, 68, 195	mp2an 704	. . . . . . . . . . . . . . . . 17 ⊢ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ On
197	144, 196	onun2i 6482	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ On
198		onunel 6466	. . . . . . . . . . . . . . . 16 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ On ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
199	194, 197, 85, 198	mp3an 1487	. . . . . . . . . . . . . . 15 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
200		onunel 6466	. . . . . . . . . . . . . . . . 17 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ On ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
201	75, 141, 85, 200	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
202		onunel 6466	. . . . . . . . . . . . . . . . 17 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ On ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → (((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
203	144, 196, 85, 202	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
204	201, 203	anbi12i 639	. . . . . . . . . . . . . . 15 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
205	199, 204	bitri 278	. . . . . . . . . . . . . 14 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ∧ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
206	189, 193, 205	sylanbrc 594	. . . . . . . . . . . . 13 ⊢ (𝜑 → (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
207		elun1 4143	. . . . . . . . . . . . 13 ⊢ ((((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) → (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄)))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
208	206, 207	syl 18	. . . . . . . . . . . 12 ⊢ (𝜑 → (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄)))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
209	188, 208	eqeltrid 2873	. . . . . . . . . . 11 ⊢ (𝜑 → ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝑃) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝐵))) ∪ ((( bday ‘𝑃) +no ( bday ‘𝐵)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
210	7, 38, 38, 39, 122, 2, 10, 209	mulsproplem1 28271	. . . . . . . . . 10 ⊢ (𝜑 → (( 0_s ·_s 0_s ) ∈ No ∧ ((𝑃 <s 𝑉 ∧ 𝑄 <s 𝐵) → ((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑄)) <s ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑄)))))
211	210	simprd 500	. . . . . . . . 9 ⊢ (𝜑 → ((𝑃 <s 𝑉 ∧ 𝑄 <s 𝐵) → ((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑄)) <s ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑄))))
212	116, 185, 211	mp2and 711	. . . . . . . 8 ⊢ (𝜑 → ((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑄)) <s ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑄)))
213	11, 16	subscld 28218	. . . . . . . . 9 ⊢ (𝜑 → ((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑄)) ∈ No )
214	27, 181	subscld 28218	. . . . . . . . 9 ⊢ (𝜑 → ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑄)) ∈ No )
215	213, 214, 14	ltadds1d 28153	. . . . . . . 8 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑄)) <s ((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑄)) ↔ (((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑄)) +_s (𝐴 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑄)) +_s (𝐴 ·_s 𝑄))))
216	212, 215	mpbid 235	. . . . . . 7 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑄)) +_s (𝐴 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑄)) +_s (𝐴 ·_s 𝑄)))
217	11, 14, 16	addsubsd 28237	. . . . . . 7 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) = (((𝑃 ·_s 𝐵) -_s (𝑃 ·_s 𝑄)) +_s (𝐴 ·_s 𝑄)))
218	27, 14, 181	addsubsd 28237	. . . . . . 7 ⊢ (𝜑 → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑉 ·_s 𝑄)) = (((𝑉 ·_s 𝐵) -_s (𝑉 ·_s 𝑄)) +_s (𝐴 ·_s 𝑄)))
219	216, 217, 218	3brtr4d 5144	. . . . . 6 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑉 ·_s 𝑄)))
220	219	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑉 ·_s 𝑄)))
221		sltsright 28016	. . . . . . . . . . 11 ⊢ (𝐴 ∈ No → {𝐴} <<s ( R ‘𝐴))
222	12, 221	syl 18	. . . . . . . . . 10 ⊢ (𝜑 → {𝐴} <<s ( R ‘𝐴))
223	222, 35, 25	sltssepcd 27927	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 <s 𝑉)
224	45	uneq1i 4126	. . . . . . . . . . . . 13 ⊢ ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))) = (∅ ∪ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))))
225		0un 4359	. . . . . . . . . . . . 13 ⊢ (∅ ∪ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))) = (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))
226	224, 225	eqtri 2792	. . . . . . . . . . . 12 ⊢ ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))) = (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))
227	63, 192	jca 520	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
228	71, 138	jca 520	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
229	77, 196	onun2i 6482	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ On
230	82, 146	onun2i 6482	. . . . . . . . . . . . . . . 16 ⊢ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ On
231		onunel 6466	. . . . . . . . . . . . . . . 16 ⊢ ((((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ On ∧ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → ((((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
232	229, 230, 85, 231	mp3an 1487	. . . . . . . . . . . . . . 15 ⊢ ((((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
233		onunel 6466	. . . . . . . . . . . . . . . . 17 ⊢ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ On ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
234	77, 196, 85, 233	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
235		onunel 6466	. . . . . . . . . . . . . . . . 17 ⊢ (((( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ On ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ On ∧ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∈ On) → (((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
236	82, 146, 85, 235	mp3an 1487	. . . . . . . . . . . . . . . 16 ⊢ (((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))))
237	234, 236	anbi12i 639	. . . . . . . . . . . . . . 15 ⊢ ((((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ↔ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ∧ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
238	232, 237	bitri 278	. . . . . . . . . . . . . 14 ⊢ ((((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ↔ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵))) ∧ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) ∧ (( bday ‘𝑉) +no ( bday ‘𝑊)) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))))
239	227, 228, 238	sylanbrc 594	. . . . . . . . . . . . 13 ⊢ (𝜑 → (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)))
240		elun1 4143	. . . . . . . . . . . . 13 ⊢ ((((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ (( bday ‘𝐴) +no ( bday ‘𝐵)) → (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
241	239, 240	syl 18	. . . . . . . . . . . 12 ⊢ (𝜑 → (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊)))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
242	226, 241	eqeltrid 2873	. . . . . . . . . . 11 ⊢ (𝜑 → ((( bday ‘ 0_s ) +no ( bday ‘ 0_s )) ∪ (((( bday ‘𝐴) +no ( bday ‘𝑊)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑄))) ∪ ((( bday ‘𝐴) +no ( bday ‘𝑄)) ∪ (( bday ‘𝑉) +no ( bday ‘𝑊))))) ∈ ((( bday ‘𝐴) +no ( bday ‘𝐵)) ∪ (((( bday ‘𝐶) +no ( bday ‘𝐸)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐹))) ∪ ((( bday ‘𝐶) +no ( bday ‘𝐹)) ∪ (( bday ‘𝐷) +no ( bday ‘𝐸))))))
243	7, 38, 38, 12, 122, 4, 2, 242	mulsproplem1 28271	. . . . . . . . . 10 ⊢ (𝜑 → (( 0_s ·_s 0_s ) ∈ No ∧ ((𝐴 <s 𝑉 ∧ 𝑊 <s 𝑄) → ((𝐴 ·_s 𝑄) -_s (𝐴 ·_s 𝑊)) <s ((𝑉 ·_s 𝑄) -_s (𝑉 ·_s 𝑊)))))
244	243	simprd 500	. . . . . . . . 9 ⊢ (𝜑 → ((𝐴 <s 𝑉 ∧ 𝑊 <s 𝑄) → ((𝐴 ·_s 𝑄) -_s (𝐴 ·_s 𝑊)) <s ((𝑉 ·_s 𝑄) -_s (𝑉 ·_s 𝑊))))
245	223, 244	mpand 707	. . . . . . . 8 ⊢ (𝜑 → (𝑊 <s 𝑄 → ((𝐴 ·_s 𝑄) -_s (𝐴 ·_s 𝑊)) <s ((𝑉 ·_s 𝑄) -_s (𝑉 ·_s 𝑊))))
246	245	imp 411	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → ((𝐴 ·_s 𝑄) -_s (𝐴 ·_s 𝑊)) <s ((𝑉 ·_s 𝑄) -_s (𝑉 ·_s 𝑊)))
247	14, 181, 20, 29	ltsubsubsbd 28238	. . . . . . . . 9 ⊢ (𝜑 → (((𝐴 ·_s 𝑄) -_s (𝐴 ·_s 𝑊)) <s ((𝑉 ·_s 𝑄) -_s (𝑉 ·_s 𝑊)) ↔ ((𝐴 ·_s 𝑄) -_s (𝑉 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝑉 ·_s 𝑊))))
248	14, 181	subscld 28218	. . . . . . . . . 10 ⊢ (𝜑 → ((𝐴 ·_s 𝑄) -_s (𝑉 ·_s 𝑄)) ∈ No )
249	20, 29	subscld 28218	. . . . . . . . . 10 ⊢ (𝜑 → ((𝐴 ·_s 𝑊) -_s (𝑉 ·_s 𝑊)) ∈ No )
250	248, 249, 27	ltadds2d 28152	. . . . . . . . 9 ⊢ (𝜑 → (((𝐴 ·_s 𝑄) -_s (𝑉 ·_s 𝑄)) <s ((𝐴 ·_s 𝑊) -_s (𝑉 ·_s 𝑊)) ↔ ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑉 ·_s 𝑄))) <s ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑉 ·_s 𝑊)))))
251	247, 250	bitrd 282	. . . . . . . 8 ⊢ (𝜑 → (((𝐴 ·_s 𝑄) -_s (𝐴 ·_s 𝑊)) <s ((𝑉 ·_s 𝑄) -_s (𝑉 ·_s 𝑊)) ↔ ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑉 ·_s 𝑄))) <s ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑉 ·_s 𝑊)))))
252	251	adantr 485	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → (((𝐴 ·_s 𝑄) -_s (𝐴 ·_s 𝑊)) <s ((𝑉 ·_s 𝑄) -_s (𝑉 ·_s 𝑊)) ↔ ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑉 ·_s 𝑄))) <s ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑉 ·_s 𝑊)))))
253	246, 252	mpbid 235	. . . . . 6 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑉 ·_s 𝑄))) <s ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑉 ·_s 𝑊))))
254	27, 14, 181	addsubsassd 28236	. . . . . . 7 ⊢ (𝜑 → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑉 ·_s 𝑄)) = ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑉 ·_s 𝑄))))
255	254	adantr 485	. . . . . 6 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑉 ·_s 𝑄)) = ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑄) -_s (𝑉 ·_s 𝑄))))
256	27, 20, 29	addsubsassd 28236	. . . . . . 7 ⊢ (𝜑 → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)) = ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑉 ·_s 𝑊))))
257	256	adantr 485	. . . . . 6 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)) = ((𝑉 ·_s 𝐵) +_s ((𝐴 ·_s 𝑊) -_s (𝑉 ·_s 𝑊))))
258	253, 255, 257	3brtr4d 5144	. . . . 5 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑉 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)))
259	179, 183, 184, 220, 258	ltstrd 27889	. . . 4 ⊢ ((𝜑 ∧ 𝑊 <s 𝑄) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)))
260	259	ex 417	. . 3 ⊢ (𝜑 → (𝑊 <s 𝑄 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊))))
261	172, 178, 260	3jaod 1454	. 2 ⊢ (𝜑 → ((𝑄 <s 𝑊 ∨ 𝑄 = 𝑊 ∨ 𝑊 <s 𝑄) → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊))))
262	6, 261	mpd 16	1 ⊢ (𝜑 → (((𝑃 ·_s 𝐵) +_s (𝐴 ·_s 𝑄)) -_s (𝑃 ·_s 𝑄)) <s (((𝑉 ·_s 𝐵) +_s (𝐴 ·_s 𝑊)) -_s (𝑉 ·_s 𝑊)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 ∨ w3o 1100 = wceq 1567 ∈ wcel 2149 ∀wral 3085 ∪ cun 3911 ∅c0 4294 {csn 4591 class class class wbr 5110 Oncon0 6358 ‘cfv 6534 (class class class)co 7408 +no cnadd 8647 No csur 27766 <s clts 27767 bday cbday 27768 <<s cslts 27912 0_s c0s 27960 O cold 27978 L cleft 27980 R cright 27981 +_s cadds 28114 -_s csubs 28175 ·_s cmuls 28261

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5239 ax-sep 5258 ax-nul 5268 ax-pow 5334 ax-pr 5402 ax-un 7730

This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-tp 4596 df-op 4598 df-ot 4600 df-uni 4874 df-int 4914 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-se 5613 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6300 df-ord 6361 df-on 6362 df-suc 6364 df-iota 6490 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 df-fv 6542 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-1st 7982 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-1o 8449 df-2o 8450 df-nadd 8648 df-no 27769 df-lts 27770 df-bday 27771 df-les 27871 df-slts 27913 df-cuts 27915 df-0s 27962 df-made 27982 df-old 27983 df-left 27985 df-right 27986 df-norec 28093 df-norec2 28104 df-adds 28115 df-negs 28176 df-subs 28177

This theorem is referenced by: mulsproplem9 28279

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