Theorem bdayfinbndlem2 28481

Description: Lemma for bdayfinbnd 28482. Conduct the induction. (Contributed by Scott Fenton, 26-Feb-2026.)

Assertion

Ref	Expression
bdayfinbndlem2	⊢ (𝑁 ∈ ℕ0s → ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑁) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑁 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑁))))

Distinct variable group:   𝑁,𝑝,𝑥,𝑦,𝑧

Proof of Theorem bdayfinbndlem2

Dummy variables 𝑎 𝑏 𝑐 𝑑 𝑞 𝑟 𝑡 𝑤 𝑛 𝑚 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		fveq2 6844	. . . . . . . 8 ⊢ (𝑚 = 0s → ( bday ‘𝑚) = ( bday ‘ 0s ))
2		bday0 27824	. . . . . . . 8 ⊢ ( bday ‘ 0s ) = ∅
3	1, 2	eqtrdi 2788	. . . . . . 7 ⊢ (𝑚 = 0s → ( bday ‘𝑚) = ∅)
4	3	sseq2d 3968	. . . . . 6 ⊢ (𝑚 = 0s → (( bday ‘𝑧) ⊆ ( bday ‘𝑚) ↔ ( bday ‘𝑧) ⊆ ∅))
5		ss0b 4355	. . . . . 6 ⊢ (( bday ‘𝑧) ⊆ ∅ ↔ ( bday ‘𝑧) = ∅)
6	4, 5	bitrdi 287	. . . . 5 ⊢ (𝑚 = 0s → (( bday ‘𝑧) ⊆ ( bday ‘𝑚) ↔ ( bday ‘𝑧) = ∅))
7	6	anbi1d 632	. . . 4 ⊢ (𝑚 = 0s → ((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) ↔ (( bday ‘𝑧) = ∅ ∧ 0s ≤s 𝑧)))
8		eqeq2 2749	. . . . 5 ⊢ (𝑚 = 0s → (𝑧 = 𝑚 ↔ 𝑧 = 0s ))
9		breq2 5104	. . . . . . . 8 ⊢ (𝑚 = 0s → ((𝑥 +s 𝑝) <s 𝑚 ↔ (𝑥 +s 𝑝) <s 0s ))
10	9	3anbi3d 1445	. . . . . . 7 ⊢ (𝑚 = 0s → ((𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s )))
11	10	rexbidv 3162	. . . . . 6 ⊢ (𝑚 = 0s → (∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s )))
12	11	2rexbidv 3203	. . . . 5 ⊢ (𝑚 = 0s → (∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s )))
13	8, 12	orbi12d 919	. . . 4 ⊢ (𝑚 = 0s → ((𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚)) ↔ (𝑧 = 0s ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s ))))
14	7, 13	imbi12d 344	. . 3 ⊢ (𝑚 = 0s → (((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚))) ↔ ((( bday ‘𝑧) = ∅ ∧ 0s ≤s 𝑧) → (𝑧 = 0s ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s )))))
15	14	ralbidv 3161	. 2 ⊢ (𝑚 = 0s → (∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚))) ↔ ∀𝑧 ∈ No ((( bday ‘𝑧) = ∅ ∧ 0s ≤s 𝑧) → (𝑧 = 0s ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s )))))
16		fveq2 6844	. . . . . 6 ⊢ (𝑚 = 𝑛 → ( bday ‘𝑚) = ( bday ‘𝑛))
17	16	sseq2d 3968	. . . . 5 ⊢ (𝑚 = 𝑛 → (( bday ‘𝑧) ⊆ ( bday ‘𝑚) ↔ ( bday ‘𝑧) ⊆ ( bday ‘𝑛)))
18	17	anbi1d 632	. . . 4 ⊢ (𝑚 = 𝑛 → ((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) ↔ (( bday ‘𝑧) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑧)))
19		eqeq2 2749	. . . . 5 ⊢ (𝑚 = 𝑛 → (𝑧 = 𝑚 ↔ 𝑧 = 𝑛))
20		breq2 5104	. . . . . . . 8 ⊢ (𝑚 = 𝑛 → ((𝑥 +s 𝑝) <s 𝑚 ↔ (𝑥 +s 𝑝) <s 𝑛))
21	20	3anbi3d 1445	. . . . . . 7 ⊢ (𝑚 = 𝑛 → ((𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛)))
22	21	rexbidv 3162	. . . . . 6 ⊢ (𝑚 = 𝑛 → (∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛)))
23	22	2rexbidv 3203	. . . . 5 ⊢ (𝑚 = 𝑛 → (∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛)))
24	19, 23	orbi12d 919	. . . 4 ⊢ (𝑚 = 𝑛 → ((𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚)) ↔ (𝑧 = 𝑛 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛))))
25	18, 24	imbi12d 344	. . 3 ⊢ (𝑚 = 𝑛 → (((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚))) ↔ ((( bday ‘𝑧) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑛 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛)))))
26	25	ralbidv 3161	. 2 ⊢ (𝑚 = 𝑛 → (∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚))) ↔ ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑛 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛)))))
27		fveq2 6844	. . . . . . 7 ⊢ (𝑚 = (𝑛 +s 1s ) → ( bday ‘𝑚) = ( bday ‘(𝑛 +s 1s )))
28	27	sseq2d 3968	. . . . . 6 ⊢ (𝑚 = (𝑛 +s 1s ) → (( bday ‘𝑧) ⊆ ( bday ‘𝑚) ↔ ( bday ‘𝑧) ⊆ ( bday ‘(𝑛 +s 1s ))))
29	28	anbi1d 632	. . . . 5 ⊢ (𝑚 = (𝑛 +s 1s ) → ((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) ↔ (( bday ‘𝑧) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑧)))
30		eqeq2 2749	. . . . . 6 ⊢ (𝑚 = (𝑛 +s 1s ) → (𝑧 = 𝑚 ↔ 𝑧 = (𝑛 +s 1s )))
31		breq2 5104	. . . . . . . . 9 ⊢ (𝑚 = (𝑛 +s 1s ) → ((𝑥 +s 𝑝) <s 𝑚 ↔ (𝑥 +s 𝑝) <s (𝑛 +s 1s )))
32	31	3anbi3d 1445	. . . . . . . 8 ⊢ (𝑚 = (𝑛 +s 1s ) → ((𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s ))))
33	32	rexbidv 3162	. . . . . . 7 ⊢ (𝑚 = (𝑛 +s 1s ) → (∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s ))))
34	33	2rexbidv 3203	. . . . . 6 ⊢ (𝑚 = (𝑛 +s 1s ) → (∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s ))))
35	30, 34	orbi12d 919	. . . . 5 ⊢ (𝑚 = (𝑛 +s 1s ) → ((𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚)) ↔ (𝑧 = (𝑛 +s 1s ) ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )))))
36	29, 35	imbi12d 344	. . . 4 ⊢ (𝑚 = (𝑛 +s 1s ) → (((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚))) ↔ ((( bday ‘𝑧) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑧) → (𝑧 = (𝑛 +s 1s ) ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s ))))))
37	36	ralbidv 3161	. . 3 ⊢ (𝑚 = (𝑛 +s 1s ) → (∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚))) ↔ ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑧) → (𝑧 = (𝑛 +s 1s ) ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s ))))))
38		fveq2 6844	. . . . . . 7 ⊢ (𝑧 = 𝑤 → ( bday ‘𝑧) = ( bday ‘𝑤))
39	38	sseq1d 3967	. . . . . 6 ⊢ (𝑧 = 𝑤 → (( bday ‘𝑧) ⊆ ( bday ‘(𝑛 +s 1s )) ↔ ( bday ‘𝑤) ⊆ ( bday ‘(𝑛 +s 1s ))))
40		breq2 5104	. . . . . 6 ⊢ (𝑧 = 𝑤 → ( 0s ≤s 𝑧 ↔ 0s ≤s 𝑤))
41	39, 40	anbi12d 633	. . . . 5 ⊢ (𝑧 = 𝑤 → ((( bday ‘𝑧) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑧) ↔ (( bday ‘𝑤) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑤)))
42		eqeq1 2741	. . . . . 6 ⊢ (𝑧 = 𝑤 → (𝑧 = (𝑛 +s 1s ) ↔ 𝑤 = (𝑛 +s 1s )))
43		eqeq1 2741	. . . . . . . . . 10 ⊢ (𝑧 = 𝑤 → (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ↔ 𝑤 = (𝑥 +s (𝑦 /su (2s↑s𝑝)))))
44	43	3anbi1d 1443	. . . . . . . . 9 ⊢ (𝑧 = 𝑤 → ((𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )) ↔ (𝑤 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s ))))
45	44	rexbidv 3162	. . . . . . . 8 ⊢ (𝑧 = 𝑤 → (∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )) ↔ ∃𝑝 ∈ ℕ0s (𝑤 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s ))))
46	45	2rexbidv 3203	. . . . . . 7 ⊢ (𝑧 = 𝑤 → (∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )) ↔ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑤 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s ))))
47		oveq1 7377	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑎 → (𝑥 +s (𝑦 /su (2s↑s𝑝))) = (𝑎 +s (𝑦 /su (2s↑s𝑝))))
48	47	eqeq2d 2748	. . . . . . . . . 10 ⊢ (𝑥 = 𝑎 → (𝑤 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ↔ 𝑤 = (𝑎 +s (𝑦 /su (2s↑s𝑝)))))
49		oveq1 7377	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑎 → (𝑥 +s 𝑝) = (𝑎 +s 𝑝))
50	49	breq1d 5110	. . . . . . . . . 10 ⊢ (𝑥 = 𝑎 → ((𝑥 +s 𝑝) <s (𝑛 +s 1s ) ↔ (𝑎 +s 𝑝) <s (𝑛 +s 1s )))
51	48, 50	3anbi13d 1441	. . . . . . . . 9 ⊢ (𝑥 = 𝑎 → ((𝑤 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )) ↔ (𝑤 = (𝑎 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑎 +s 𝑝) <s (𝑛 +s 1s ))))
52	51	rexbidv 3162	. . . . . . . 8 ⊢ (𝑥 = 𝑎 → (∃𝑝 ∈ ℕ0s (𝑤 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )) ↔ ∃𝑝 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑎 +s 𝑝) <s (𝑛 +s 1s ))))
53		oveq1 7377	. . . . . . . . . . . . 13 ⊢ (𝑦 = 𝑏 → (𝑦 /su (2s↑s𝑝)) = (𝑏 /su (2s↑s𝑝)))
54	53	oveq2d 7386	. . . . . . . . . . . 12 ⊢ (𝑦 = 𝑏 → (𝑎 +s (𝑦 /su (2s↑s𝑝))) = (𝑎 +s (𝑏 /su (2s↑s𝑝))))
55	54	eqeq2d 2748	. . . . . . . . . . 11 ⊢ (𝑦 = 𝑏 → (𝑤 = (𝑎 +s (𝑦 /su (2s↑s𝑝))) ↔ 𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑝)))))
56		breq1 5103	. . . . . . . . . . 11 ⊢ (𝑦 = 𝑏 → (𝑦 <s (2s↑s𝑝) ↔ 𝑏 <s (2s↑s𝑝)))
57	55, 56	3anbi12d 1440	. . . . . . . . . 10 ⊢ (𝑦 = 𝑏 → ((𝑤 = (𝑎 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑎 +s 𝑝) <s (𝑛 +s 1s )) ↔ (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑝))) ∧ 𝑏 <s (2s↑s𝑝) ∧ (𝑎 +s 𝑝) <s (𝑛 +s 1s ))))
58	57	rexbidv 3162	. . . . . . . . 9 ⊢ (𝑦 = 𝑏 → (∃𝑝 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑎 +s 𝑝) <s (𝑛 +s 1s )) ↔ ∃𝑝 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑝))) ∧ 𝑏 <s (2s↑s𝑝) ∧ (𝑎 +s 𝑝) <s (𝑛 +s 1s ))))
59		oveq2 7378	. . . . . . . . . . . . . 14 ⊢ (𝑝 = 𝑞 → (2s↑s𝑝) = (2s↑s𝑞))
60	59	oveq2d 7386	. . . . . . . . . . . . 13 ⊢ (𝑝 = 𝑞 → (𝑏 /su (2s↑s𝑝)) = (𝑏 /su (2s↑s𝑞)))
61	60	oveq2d 7386	. . . . . . . . . . . 12 ⊢ (𝑝 = 𝑞 → (𝑎 +s (𝑏 /su (2s↑s𝑝))) = (𝑎 +s (𝑏 /su (2s↑s𝑞))))
62	61	eqeq2d 2748	. . . . . . . . . . 11 ⊢ (𝑝 = 𝑞 → (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑝))) ↔ 𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞)))))
63	59	breq2d 5112	. . . . . . . . . . 11 ⊢ (𝑝 = 𝑞 → (𝑏 <s (2s↑s𝑝) ↔ 𝑏 <s (2s↑s𝑞)))
64		oveq2 7378	. . . . . . . . . . . 12 ⊢ (𝑝 = 𝑞 → (𝑎 +s 𝑝) = (𝑎 +s 𝑞))
65	64	breq1d 5110	. . . . . . . . . . 11 ⊢ (𝑝 = 𝑞 → ((𝑎 +s 𝑝) <s (𝑛 +s 1s ) ↔ (𝑎 +s 𝑞) <s (𝑛 +s 1s )))
66	62, 63, 65	3anbi123d 1439	. . . . . . . . . 10 ⊢ (𝑝 = 𝑞 → ((𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑝))) ∧ 𝑏 <s (2s↑s𝑝) ∧ (𝑎 +s 𝑝) <s (𝑛 +s 1s )) ↔ (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s ))))
67	66	cbvrexvw 3217	. . . . . . . . 9 ⊢ (∃𝑝 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑝))) ∧ 𝑏 <s (2s↑s𝑝) ∧ (𝑎 +s 𝑝) <s (𝑛 +s 1s )) ↔ ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s )))
68	58, 67	bitrdi 287	. . . . . . . 8 ⊢ (𝑦 = 𝑏 → (∃𝑝 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑎 +s 𝑝) <s (𝑛 +s 1s )) ↔ ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s ))))
69	52, 68	cbvrex2vw 3221	. . . . . . 7 ⊢ (∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑤 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )) ↔ ∃𝑎 ∈ ℕ0s ∃𝑏 ∈ ℕ0s ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s )))
70	46, 69	bitrdi 287	. . . . . 6 ⊢ (𝑧 = 𝑤 → (∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )) ↔ ∃𝑎 ∈ ℕ0s ∃𝑏 ∈ ℕ0s ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s ))))
71	42, 70	orbi12d 919	. . . . 5 ⊢ (𝑧 = 𝑤 → ((𝑧 = (𝑛 +s 1s ) ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s ))) ↔ (𝑤 = (𝑛 +s 1s ) ∨ ∃𝑎 ∈ ℕ0s ∃𝑏 ∈ ℕ0s ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s )))))
72	41, 71	imbi12d 344	. . . 4 ⊢ (𝑧 = 𝑤 → (((( bday ‘𝑧) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑧) → (𝑧 = (𝑛 +s 1s ) ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )))) ↔ ((( bday ‘𝑤) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑤) → (𝑤 = (𝑛 +s 1s ) ∨ ∃𝑎 ∈ ℕ0s ∃𝑏 ∈ ℕ0s ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s ))))))
73	72	cbvralvw 3216	. . 3 ⊢ (∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑧) → (𝑧 = (𝑛 +s 1s ) ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s (𝑛 +s 1s )))) ↔ ∀𝑤 ∈ No ((( bday ‘𝑤) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑤) → (𝑤 = (𝑛 +s 1s ) ∨ ∃𝑎 ∈ ℕ0s ∃𝑏 ∈ ℕ0s ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s )))))
74	37, 73	bitrdi 287	. 2 ⊢ (𝑚 = (𝑛 +s 1s ) → (∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚))) ↔ ∀𝑤 ∈ No ((( bday ‘𝑤) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑤) → (𝑤 = (𝑛 +s 1s ) ∨ ∃𝑎 ∈ ℕ0s ∃𝑏 ∈ ℕ0s ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s ))))))
75		fveq2 6844	. . . . . 6 ⊢ (𝑚 = 𝑁 → ( bday ‘𝑚) = ( bday ‘𝑁))
76	75	sseq2d 3968	. . . . 5 ⊢ (𝑚 = 𝑁 → (( bday ‘𝑧) ⊆ ( bday ‘𝑚) ↔ ( bday ‘𝑧) ⊆ ( bday ‘𝑁)))
77	76	anbi1d 632	. . . 4 ⊢ (𝑚 = 𝑁 → ((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) ↔ (( bday ‘𝑧) ⊆ ( bday ‘𝑁) ∧ 0s ≤s 𝑧)))
78		eqeq2 2749	. . . . 5 ⊢ (𝑚 = 𝑁 → (𝑧 = 𝑚 ↔ 𝑧 = 𝑁))
79		breq2 5104	. . . . . . . 8 ⊢ (𝑚 = 𝑁 → ((𝑥 +s 𝑝) <s 𝑚 ↔ (𝑥 +s 𝑝) <s 𝑁))
80	79	3anbi3d 1445	. . . . . . 7 ⊢ (𝑚 = 𝑁 → ((𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑁)))
81	80	rexbidv 3162	. . . . . 6 ⊢ (𝑚 = 𝑁 → (∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑁)))
82	81	2rexbidv 3203	. . . . 5 ⊢ (𝑚 = 𝑁 → (∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚) ↔ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑁)))
83	78, 82	orbi12d 919	. . . 4 ⊢ (𝑚 = 𝑁 → ((𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚)) ↔ (𝑧 = 𝑁 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑁))))
84	77, 83	imbi12d 344	. . 3 ⊢ (𝑚 = 𝑁 → (((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚))) ↔ ((( bday ‘𝑧) ⊆ ( bday ‘𝑁) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑁 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑁)))))
85	84	ralbidv 3161	. 2 ⊢ (𝑚 = 𝑁 → (∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑚) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑚 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑚))) ↔ ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑁) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑁 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑁)))))
86		bday0b 27826	. . . . 5 ⊢ (𝑧 ∈ No → (( bday ‘𝑧) = ∅ ↔ 𝑧 = 0s ))
87		orc 868	. . . . 5 ⊢ (𝑧 = 0s → (𝑧 = 0s ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s )))
88	86, 87	biimtrdi 253	. . . 4 ⊢ (𝑧 ∈ No → (( bday ‘𝑧) = ∅ → (𝑧 = 0s ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s ))))
89	88	adantrd 491	. . 3 ⊢ (𝑧 ∈ No → ((( bday ‘𝑧) = ∅ ∧ 0s ≤s 𝑧) → (𝑧 = 0s ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s ))))
90	89	rgen 3054	. 2 ⊢ ∀𝑧 ∈ No ((( bday ‘𝑧) = ∅ ∧ 0s ≤s 𝑧) → (𝑧 = 0s ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 0s )))
91		simpl 482	. . . 4 ⊢ ((𝑛 ∈ ℕ0s ∧ ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑛 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛)))) → 𝑛 ∈ ℕ0s)
92		simpr 484	. . . . 5 ⊢ ((𝑛 ∈ ℕ0s ∧ ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑛 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛)))) → ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑛 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛))))
93	91, 92	bdayfinbndcbv 28479	. . . 4 ⊢ ((𝑛 ∈ ℕ0s ∧ ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑛 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛)))) → ∀𝑡 ∈ No ((( bday ‘𝑡) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑡) → (𝑡 = 𝑛 ∨ ∃𝑐 ∈ ℕ0s ∃𝑑 ∈ ℕ0s ∃𝑟 ∈ ℕ0s (𝑡 = (𝑐 +s (𝑑 /su (2s↑s𝑟))) ∧ 𝑑 <s (2s↑s𝑟) ∧ (𝑐 +s 𝑟) <s 𝑛))))
94	91, 93	bdayfinbndlem1 28480	. . 3 ⊢ ((𝑛 ∈ ℕ0s ∧ ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑛 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛)))) → ∀𝑤 ∈ No ((( bday ‘𝑤) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑤) → (𝑤 = (𝑛 +s 1s ) ∨ ∃𝑎 ∈ ℕ0s ∃𝑏 ∈ ℕ0s ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s )))))
95	94	ex 412	. 2 ⊢ (𝑛 ∈ ℕ0s → (∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑛) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑛 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑛))) → ∀𝑤 ∈ No ((( bday ‘𝑤) ⊆ ( bday ‘(𝑛 +s 1s )) ∧ 0s ≤s 𝑤) → (𝑤 = (𝑛 +s 1s ) ∨ ∃𝑎 ∈ ℕ0s ∃𝑏 ∈ ℕ0s ∃𝑞 ∈ ℕ0s (𝑤 = (𝑎 +s (𝑏 /su (2s↑s𝑞))) ∧ 𝑏 <s (2s↑s𝑞) ∧ (𝑎 +s 𝑞) <s (𝑛 +s 1s ))))))
96	15, 26, 74, 85, 90, 95	n0sind 28346	1 ⊢ (𝑁 ∈ ℕ0s → ∀𝑧 ∈ No ((( bday ‘𝑧) ⊆ ( bday ‘𝑁) ∧ 0s ≤s 𝑧) → (𝑧 = 𝑁 ∨ ∃𝑥 ∈ ℕ0s ∃𝑦 ∈ ℕ0s ∃𝑝 ∈ ℕ0s (𝑧 = (𝑥 +s (𝑦 /su (2s↑s𝑝))) ∧ 𝑦 <s (2s↑s𝑝) ∧ (𝑥 +s 𝑝) <s 𝑁))))

Syntax hints:   → wi 4   ∧ wa 395   ∨ wo 848   ∧ w3a 1087   = wceq 1542   ∈ wcel 2114  ∀wral 3052  ∃wrex 3062   ⊆ wss 3903  ∅c0 4287   class class class wbr 5100  ‘cfv 6502  (class class class)co 7370   No csur 27624   <s clts 27625   bday cbday 27626   ≤s cles 27729   0_s c0s 27818   1_s c1s 27819   +_s cadds 27972   /_su cdivs 28200  ℕ_0scn0s 28325  2_sc2s 28423  ↑_scexps 28425

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5226  ax-sep 5245  ax-nul 5255  ax-pow 5314  ax-pr 5381  ax-un 7692  ax-dc 10370  ax-ac2 10387

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rmo 3352  df-reu 3353  df-rab 3402  df-v 3444  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-pss 3923  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-tp 4587  df-op 4589  df-ot 4591  df-uni 4866  df-int 4905  df-iun 4950  df-br 5101  df-opab 5163  df-mpt 5182  df-tr 5208  df-id 5529  df-eprel 5534  df-po 5542  df-so 5543  df-fr 5587  df-se 5588  df-we 5589  df-xp 5640  df-rel 5641  df-cnv 5642  df-co 5643  df-dm 5644  df-rn 5645  df-res 5646  df-ima 5647  df-pred 6269  df-ord 6330  df-on 6331  df-lim 6332  df-suc 6333  df-iota 6458  df-fun 6504  df-fn 6505  df-f 6506  df-f1 6507  df-fo 6508  df-f1o 6509  df-fv 6510  df-isom 6511  df-riota 7327  df-ov 7373  df-oprab 7374  df-mpo 7375  df-om 7821  df-1st 7945  df-2nd 7946  df-frecs 8235  df-wrecs 8266  df-recs 8315  df-rdg 8353  df-1o 8409  df-2o 8410  df-oadd 8413  df-nadd 8606  df-er 8647  df-map 8779  df-en 8898  df-dom 8899  df-fin 8901  df-card 9865  df-acn 9868  df-ac 10040  df-no 27627  df-lts 27628  df-bday 27629  df-les 27730  df-slts 27771  df-cuts 27773  df-0s 27820  df-1s 27821  df-made 27840  df-old 27841  df-left 27843  df-right 27844  df-norec 27951  df-norec2 27962  df-adds 27973  df-negs 28034  df-subs 28035  df-muls 28120  df-divs 28201  df-ons 28265  df-seqs 28297  df-n0s 28327  df-nns 28328  df-zs 28392  df-2s 28424  df-exps 28426

This theorem is referenced by:  bdayfinbnd  28482