Theorem supadd 10868

Description: The supremum function distributes over addition in a sense similar to that in supmul 10872. (Contributed by Brendan Leahy, 26-Sep-2017.)

Hypotheses

Ref	Expression
supadd.a1	⊢ (𝜑 → 𝐴 ⊆ ℝ)
supadd.a2	⊢ (𝜑 → 𝐴 ≠ ∅)
supadd.a3	⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥)
supadd.b1	⊢ (𝜑 → 𝐵 ⊆ ℝ)
supadd.b2	⊢ (𝜑 → 𝐵 ≠ ∅)
supadd.b3	⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)
supadd.c	⊢ 𝐶 = {𝑧 ∣ ∃𝑣 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑧 = (𝑣 + 𝑏)}

Assertion

Ref	Expression
supadd	⊢ (𝜑 → (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) = sup(𝐶, ℝ, < ))

Distinct variable groups:   𝑥,𝑦,𝑧,𝑏,𝑣,𝐴   𝑥,𝐵,𝑦,𝑧,𝑏,𝑣   𝑥,𝐶   𝜑,𝑧,𝑏,𝑣

Allowed substitution hints:   𝜑(𝑥,𝑦)   𝐶(𝑦,𝑧,𝑣,𝑏)

Proof of Theorem supadd

Dummy variables 𝑤 𝑎 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		supadd.a1	. . . . 5 ⊢ (𝜑 → 𝐴 ⊆ ℝ)
2		supadd.a2	. . . . 5 ⊢ (𝜑 → 𝐴 ≠ ∅)
3		supadd.a3	. . . . 5 ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥)
4		supadd.b1	. . . . . 6 ⊢ (𝜑 → 𝐵 ⊆ ℝ)
5		supadd.b2	. . . . . 6 ⊢ (𝜑 → 𝐵 ≠ ∅)
6		supadd.b3	. . . . . 6 ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)
7		suprcl 10862	. . . . . 6 ⊢ ((𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥) → sup(𝐵, ℝ, < ) ∈ ℝ)
8	4, 5, 6, 7	syl3anc 1318	. . . . 5 ⊢ (𝜑 → sup(𝐵, ℝ, < ) ∈ ℝ)
9		eqid 2610	. . . . 5 ⊢ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (𝑎 + sup(𝐵, ℝ, < ))} = {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (𝑎 + sup(𝐵, ℝ, < ))}
10	1, 2, 3, 8, 9	supaddc 10867	. . . 4 ⊢ (𝜑 → (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) = sup({𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (𝑎 + sup(𝐵, ℝ, < ))}, ℝ, < ))
11	1	sselda 3568	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → 𝑎 ∈ ℝ)
12	11	recnd 9947	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → 𝑎 ∈ ℂ)
13	8	adantr 480	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → sup(𝐵, ℝ, < ) ∈ ℝ)
14	13	recnd 9947	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → sup(𝐵, ℝ, < ) ∈ ℂ)
15	12, 14	addcomd 10117	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (𝑎 + sup(𝐵, ℝ, < )) = (sup(𝐵, ℝ, < ) + 𝑎))
16	15	eqeq2d 2620	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (𝑧 = (𝑎 + sup(𝐵, ℝ, < )) ↔ 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)))
17	16	rexbidva 3031	. . . . . 6 ⊢ (𝜑 → (∃𝑎 ∈ 𝐴 𝑧 = (𝑎 + sup(𝐵, ℝ, < )) ↔ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)))
18	17	abbidv 2728	. . . . 5 ⊢ (𝜑 → {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (𝑎 + sup(𝐵, ℝ, < ))} = {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)})
19	18	supeq1d 8235	. . . 4 ⊢ (𝜑 → sup({𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (𝑎 + sup(𝐵, ℝ, < ))}, ℝ, < ) = sup({𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}, ℝ, < ))
20	10, 19	eqtrd 2644	. . 3 ⊢ (𝜑 → (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) = sup({𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}, ℝ, < ))
21		vex 3176	. . . . . . 7 ⊢ 𝑤 ∈ V
22		eqeq1 2614	. . . . . . . 8 ⊢ (𝑧 = 𝑤 → (𝑧 = (sup(𝐵, ℝ, < ) + 𝑎) ↔ 𝑤 = (sup(𝐵, ℝ, < ) + 𝑎)))
23	22	rexbidv 3034	. . . . . . 7 ⊢ (𝑧 = 𝑤 → (∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎) ↔ ∃𝑎 ∈ 𝐴 𝑤 = (sup(𝐵, ℝ, < ) + 𝑎)))
24	21, 23	elab 3319	. . . . . 6 ⊢ (𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)} ↔ ∃𝑎 ∈ 𝐴 𝑤 = (sup(𝐵, ℝ, < ) + 𝑎))
25	4	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → 𝐵 ⊆ ℝ)
26	5	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → 𝐵 ≠ ∅)
27	6	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥)
28		eqid 2610	. . . . . . . . . . 11 ⊢ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑏 + 𝑎)} = {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑏 + 𝑎)}
29	25, 26, 27, 11, 28	supaddc 10867	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (sup(𝐵, ℝ, < ) + 𝑎) = sup({𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑏 + 𝑎)}, ℝ, < ))
30	4	sselda 3568	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 𝑏 ∈ ℝ)
31	30	adantlr 747	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑎 ∈ 𝐴) ∧ 𝑏 ∈ 𝐵) → 𝑏 ∈ ℝ)
32	31	recnd 9947	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑎 ∈ 𝐴) ∧ 𝑏 ∈ 𝐵) → 𝑏 ∈ ℂ)
33	11	adantr 480	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑎 ∈ 𝐴) ∧ 𝑏 ∈ 𝐵) → 𝑎 ∈ ℝ)
34	33	recnd 9947	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑎 ∈ 𝐴) ∧ 𝑏 ∈ 𝐵) → 𝑎 ∈ ℂ)
35	32, 34	addcomd 10117	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑎 ∈ 𝐴) ∧ 𝑏 ∈ 𝐵) → (𝑏 + 𝑎) = (𝑎 + 𝑏))
36	35	eqeq2d 2620	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑎 ∈ 𝐴) ∧ 𝑏 ∈ 𝐵) → (𝑧 = (𝑏 + 𝑎) ↔ 𝑧 = (𝑎 + 𝑏)))
37	36	rexbidva 3031	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (∃𝑏 ∈ 𝐵 𝑧 = (𝑏 + 𝑎) ↔ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)))
38	37	abbidv 2728	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑏 + 𝑎)} = {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)})
39	38	supeq1d 8235	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → sup({𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑏 + 𝑎)}, ℝ, < ) = sup({𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}, ℝ, < ))
40	29, 39	eqtrd 2644	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (sup(𝐵, ℝ, < ) + 𝑎) = sup({𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}, ℝ, < ))
41		eqeq1 2614	. . . . . . . . . . . . . 14 ⊢ (𝑧 = 𝑤 → (𝑧 = (𝑎 + 𝑏) ↔ 𝑤 = (𝑎 + 𝑏)))
42	41	rexbidv 3034	. . . . . . . . . . . . 13 ⊢ (𝑧 = 𝑤 → (∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏) ↔ ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏)))
43	21, 42	elab 3319	. . . . . . . . . . . 12 ⊢ (𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)} ↔ ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
44		rspe 2986	. . . . . . . . . . . . . . 15 ⊢ ((𝑎 ∈ 𝐴 ∧ ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏)) → ∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
45		oveq1 6556	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑣 = 𝑎 → (𝑣 + 𝑏) = (𝑎 + 𝑏))
46	45	eqeq2d 2620	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑣 = 𝑎 → (𝑧 = (𝑣 + 𝑏) ↔ 𝑧 = (𝑎 + 𝑏)))
47	46	rexbidv 3034	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑣 = 𝑎 → (∃𝑏 ∈ 𝐵 𝑧 = (𝑣 + 𝑏) ↔ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)))
48	47	cbvrexv 3148	. . . . . . . . . . . . . . . . 17 ⊢ (∃𝑣 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑧 = (𝑣 + 𝑏) ↔ ∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏))
49	41	2rexbidv 3039	. . . . . . . . . . . . . . . . 17 ⊢ (𝑧 = 𝑤 → (∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏) ↔ ∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏)))
50	48, 49	syl5bb 271	. . . . . . . . . . . . . . . 16 ⊢ (𝑧 = 𝑤 → (∃𝑣 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑧 = (𝑣 + 𝑏) ↔ ∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏)))
51		supadd.c	. . . . . . . . . . . . . . . 16 ⊢ 𝐶 = {𝑧 ∣ ∃𝑣 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑧 = (𝑣 + 𝑏)}
52	21, 50, 51	elab2 3323	. . . . . . . . . . . . . . 15 ⊢ (𝑤 ∈ 𝐶 ↔ ∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
53	44, 52	sylibr 223	. . . . . . . . . . . . . 14 ⊢ ((𝑎 ∈ 𝐴 ∧ ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏)) → 𝑤 ∈ 𝐶)
54	53	ex 449	. . . . . . . . . . . . 13 ⊢ (𝑎 ∈ 𝐴 → (∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏) → 𝑤 ∈ 𝐶))
55	1	sseld 3567	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → (𝑎 ∈ 𝐴 → 𝑎 ∈ ℝ))
56	4	sseld 3567	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → (𝑏 ∈ 𝐵 → 𝑏 ∈ ℝ))
57	55, 56	anim12d 584	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → ((𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵) → (𝑎 ∈ ℝ ∧ 𝑏 ∈ ℝ)))
58		readdcl 9898	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑎 ∈ ℝ ∧ 𝑏 ∈ ℝ) → (𝑎 + 𝑏) ∈ ℝ)
59	57, 58	syl6 34	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → ((𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵) → (𝑎 + 𝑏) ∈ ℝ))
60		eleq1a 2683	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑎 + 𝑏) ∈ ℝ → (𝑤 = (𝑎 + 𝑏) → 𝑤 ∈ ℝ))
61	59, 60	syl6 34	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → ((𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵) → (𝑤 = (𝑎 + 𝑏) → 𝑤 ∈ ℝ)))
62	61	rexlimdvv 3019	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → (∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏) → 𝑤 ∈ ℝ))
63	52, 62	syl5bi 231	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (𝑤 ∈ 𝐶 → 𝑤 ∈ ℝ))
64	63	ssrdv 3574	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝐶 ⊆ ℝ)
65		ovex 6577	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑎 + 𝑏) ∈ V
66	65	isseti 3182	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ∃𝑤 𝑤 = (𝑎 + 𝑏)
67	66	rgenw 2908	. . . . . . . . . . . . . . . . . . . 20 ⊢ ∀𝑏 ∈ 𝐵 ∃𝑤 𝑤 = (𝑎 + 𝑏)
68		r19.2z 4012	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝐵 ≠ ∅ ∧ ∀𝑏 ∈ 𝐵 ∃𝑤 𝑤 = (𝑎 + 𝑏)) → ∃𝑏 ∈ 𝐵 ∃𝑤 𝑤 = (𝑎 + 𝑏))
69	5, 67, 68	sylancl 693	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → ∃𝑏 ∈ 𝐵 ∃𝑤 𝑤 = (𝑎 + 𝑏))
70		rexcom4 3198	. . . . . . . . . . . . . . . . . . 19 ⊢ (∃𝑏 ∈ 𝐵 ∃𝑤 𝑤 = (𝑎 + 𝑏) ↔ ∃𝑤∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
71	69, 70	sylib 207	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → ∃𝑤∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
72	71	ralrimivw 2950	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → ∀𝑎 ∈ 𝐴 ∃𝑤∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
73		r19.2z 4012	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐴 ≠ ∅ ∧ ∀𝑎 ∈ 𝐴 ∃𝑤∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏)) → ∃𝑎 ∈ 𝐴 ∃𝑤∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
74	2, 72, 73	syl2anc 691	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → ∃𝑎 ∈ 𝐴 ∃𝑤∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
75		rexcom4 3198	. . . . . . . . . . . . . . . 16 ⊢ (∃𝑎 ∈ 𝐴 ∃𝑤∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏) ↔ ∃𝑤∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
76	74, 75	sylib 207	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ∃𝑤∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
77		n0 3890	. . . . . . . . . . . . . . . 16 ⊢ (𝐶 ≠ ∅ ↔ ∃𝑤 𝑤 ∈ 𝐶)
78	52	exbii 1764	. . . . . . . . . . . . . . . 16 ⊢ (∃𝑤 𝑤 ∈ 𝐶 ↔ ∃𝑤∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
79	77, 78	bitri 263	. . . . . . . . . . . . . . 15 ⊢ (𝐶 ≠ ∅ ↔ ∃𝑤∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏))
80	76, 79	sylibr 223	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝐶 ≠ ∅)
81		suprcl 10862	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐴 ⊆ ℝ ∧ 𝐴 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) → sup(𝐴, ℝ, < ) ∈ ℝ)
82	1, 2, 3, 81	syl3anc 1318	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → sup(𝐴, ℝ, < ) ∈ ℝ)
83	82, 8	readdcld 9948	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) ∈ ℝ)
84	11	adantrr 749	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵)) → 𝑎 ∈ ℝ)
85	30	adantrl 748	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵)) → 𝑏 ∈ ℝ)
86	82	adantr 480	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵)) → sup(𝐴, ℝ, < ) ∈ ℝ)
87	8	adantr 480	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵)) → sup(𝐵, ℝ, < ) ∈ ℝ)
88	1, 2, 3	3jca 1235	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝜑 → (𝐴 ⊆ ℝ ∧ 𝐴 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥))
89		suprub 10863	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝐴 ⊆ ℝ ∧ 𝐴 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) ∧ 𝑎 ∈ 𝐴) → 𝑎 ≤ sup(𝐴, ℝ, < ))
90	88, 89	sylan 487	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → 𝑎 ≤ sup(𝐴, ℝ, < ))
91	90	adantrr 749	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵)) → 𝑎 ≤ sup(𝐴, ℝ, < ))
92	4, 5, 6	3jca 1235	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝜑 → (𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥))
93		suprub 10863	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝐵 ⊆ ℝ ∧ 𝐵 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ 𝐵 𝑦 ≤ 𝑥) ∧ 𝑏 ∈ 𝐵) → 𝑏 ≤ sup(𝐵, ℝ, < ))
94	92, 93	sylan 487	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐵) → 𝑏 ≤ sup(𝐵, ℝ, < ))
95	94	adantrl 748	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵)) → 𝑏 ≤ sup(𝐵, ℝ, < ))
96	84, 85, 86, 87, 91, 95	le2addd 10525	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵)) → (𝑎 + 𝑏) ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )))
97	96	ex 449	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → ((𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵) → (𝑎 + 𝑏) ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))))
98		breq1 4586	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑤 = (𝑎 + 𝑏) → (𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) ↔ (𝑎 + 𝑏) ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))))
99	98	biimprcd 239	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑎 + 𝑏) ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) → (𝑤 = (𝑎 + 𝑏) → 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))))
100	97, 99	syl6 34	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → ((𝑎 ∈ 𝐴 ∧ 𝑏 ∈ 𝐵) → (𝑤 = (𝑎 + 𝑏) → 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )))))
101	100	rexlimdvv 3019	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → (∃𝑎 ∈ 𝐴 ∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏) → 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))))
102	52, 101	syl5bi 231	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → (𝑤 ∈ 𝐶 → 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))))
103	102	ralrimiv 2948	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ∀𝑤 ∈ 𝐶 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )))
104		breq2 4587	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 = (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) → (𝑤 ≤ 𝑥 ↔ 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))))
105	104	ralbidv 2969	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) → (∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥 ↔ ∀𝑤 ∈ 𝐶 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))))
106	105	rspcev 3282	. . . . . . . . . . . . . . 15 ⊢ (((sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) ∈ ℝ ∧ ∀𝑤 ∈ 𝐶 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))) → ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥)
107	83, 103, 106	syl2anc 691	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥)
108		suprub 10863	. . . . . . . . . . . . . . 15 ⊢ (((𝐶 ⊆ ℝ ∧ 𝐶 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥) ∧ 𝑤 ∈ 𝐶) → 𝑤 ≤ sup(𝐶, ℝ, < ))
109	108	ex 449	. . . . . . . . . . . . . 14 ⊢ ((𝐶 ⊆ ℝ ∧ 𝐶 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥) → (𝑤 ∈ 𝐶 → 𝑤 ≤ sup(𝐶, ℝ, < )))
110	64, 80, 107, 109	syl3anc 1318	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑤 ∈ 𝐶 → 𝑤 ≤ sup(𝐶, ℝ, < )))
111	54, 110	sylan9r 688	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (∃𝑏 ∈ 𝐵 𝑤 = (𝑎 + 𝑏) → 𝑤 ≤ sup(𝐶, ℝ, < )))
112	43, 111	syl5bi 231	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)} → 𝑤 ≤ sup(𝐶, ℝ, < )))
113	112	ralrimiv 2948	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → ∀𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}𝑤 ≤ sup(𝐶, ℝ, < ))
114	33, 31	readdcld 9948	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑎 ∈ 𝐴) ∧ 𝑏 ∈ 𝐵) → (𝑎 + 𝑏) ∈ ℝ)
115		eleq1a 2683	. . . . . . . . . . . . . 14 ⊢ ((𝑎 + 𝑏) ∈ ℝ → (𝑧 = (𝑎 + 𝑏) → 𝑧 ∈ ℝ))
116	114, 115	syl 17	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑎 ∈ 𝐴) ∧ 𝑏 ∈ 𝐵) → (𝑧 = (𝑎 + 𝑏) → 𝑧 ∈ ℝ))
117	116	rexlimdva 3013	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏) → 𝑧 ∈ ℝ))
118	117	abssdv 3639	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)} ⊆ ℝ)
119	65	isseti 3182	. . . . . . . . . . . . . . . 16 ⊢ ∃𝑧 𝑧 = (𝑎 + 𝑏)
120	119	rgenw 2908	. . . . . . . . . . . . . . 15 ⊢ ∀𝑏 ∈ 𝐵 ∃𝑧 𝑧 = (𝑎 + 𝑏)
121		r19.2z 4012	. . . . . . . . . . . . . . 15 ⊢ ((𝐵 ≠ ∅ ∧ ∀𝑏 ∈ 𝐵 ∃𝑧 𝑧 = (𝑎 + 𝑏)) → ∃𝑏 ∈ 𝐵 ∃𝑧 𝑧 = (𝑎 + 𝑏))
122	5, 120, 121	sylancl 693	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ∃𝑏 ∈ 𝐵 ∃𝑧 𝑧 = (𝑎 + 𝑏))
123		rexcom4 3198	. . . . . . . . . . . . . 14 ⊢ (∃𝑏 ∈ 𝐵 ∃𝑧 𝑧 = (𝑎 + 𝑏) ↔ ∃𝑧∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏))
124	122, 123	sylib 207	. . . . . . . . . . . . 13 ⊢ (𝜑 → ∃𝑧∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏))
125		abn0 3908	. . . . . . . . . . . . 13 ⊢ ({𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)} ≠ ∅ ↔ ∃𝑧∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏))
126	124, 125	sylibr 223	. . . . . . . . . . . 12 ⊢ (𝜑 → {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)} ≠ ∅)
127	126	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)} ≠ ∅)
128		suprcl 10862	. . . . . . . . . . . . . 14 ⊢ ((𝐶 ⊆ ℝ ∧ 𝐶 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥) → sup(𝐶, ℝ, < ) ∈ ℝ)
129	64, 80, 107, 128	syl3anc 1318	. . . . . . . . . . . . 13 ⊢ (𝜑 → sup(𝐶, ℝ, < ) ∈ ℝ)
130	129	adantr 480	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → sup(𝐶, ℝ, < ) ∈ ℝ)
131		breq2 4587	. . . . . . . . . . . . . 14 ⊢ (𝑥 = sup(𝐶, ℝ, < ) → (𝑤 ≤ 𝑥 ↔ 𝑤 ≤ sup(𝐶, ℝ, < )))
132	131	ralbidv 2969	. . . . . . . . . . . . 13 ⊢ (𝑥 = sup(𝐶, ℝ, < ) → (∀𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}𝑤 ≤ 𝑥 ↔ ∀𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}𝑤 ≤ sup(𝐶, ℝ, < )))
133	132	rspcev 3282	. . . . . . . . . . . 12 ⊢ ((sup(𝐶, ℝ, < ) ∈ ℝ ∧ ∀𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}𝑤 ≤ sup(𝐶, ℝ, < )) → ∃𝑥 ∈ ℝ ∀𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}𝑤 ≤ 𝑥)
134	130, 113, 133	syl2anc 691	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → ∃𝑥 ∈ ℝ ∀𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}𝑤 ≤ 𝑥)
135		suprleub 10866	. . . . . . . . . . 11 ⊢ ((({𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)} ⊆ ℝ ∧ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)} ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}𝑤 ≤ 𝑥) ∧ sup(𝐶, ℝ, < ) ∈ ℝ) → (sup({𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}, ℝ, < ) ≤ sup(𝐶, ℝ, < ) ↔ ∀𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}𝑤 ≤ sup(𝐶, ℝ, < )))
136	118, 127, 134, 130, 135	syl31anc 1321	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (sup({𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}, ℝ, < ) ≤ sup(𝐶, ℝ, < ) ↔ ∀𝑤 ∈ {𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}𝑤 ≤ sup(𝐶, ℝ, < )))
137	113, 136	mpbird 246	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → sup({𝑧 ∣ ∃𝑏 ∈ 𝐵 𝑧 = (𝑎 + 𝑏)}, ℝ, < ) ≤ sup(𝐶, ℝ, < ))
138	40, 137	eqbrtrd 4605	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (sup(𝐵, ℝ, < ) + 𝑎) ≤ sup(𝐶, ℝ, < ))
139		breq1 4586	. . . . . . . 8 ⊢ (𝑤 = (sup(𝐵, ℝ, < ) + 𝑎) → (𝑤 ≤ sup(𝐶, ℝ, < ) ↔ (sup(𝐵, ℝ, < ) + 𝑎) ≤ sup(𝐶, ℝ, < )))
140	138, 139	syl5ibrcom 236	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (𝑤 = (sup(𝐵, ℝ, < ) + 𝑎) → 𝑤 ≤ sup(𝐶, ℝ, < )))
141	140	rexlimdva 3013	. . . . . 6 ⊢ (𝜑 → (∃𝑎 ∈ 𝐴 𝑤 = (sup(𝐵, ℝ, < ) + 𝑎) → 𝑤 ≤ sup(𝐶, ℝ, < )))
142	24, 141	syl5bi 231	. . . . 5 ⊢ (𝜑 → (𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)} → 𝑤 ≤ sup(𝐶, ℝ, < )))
143	142	ralrimiv 2948	. . . 4 ⊢ (𝜑 → ∀𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}𝑤 ≤ sup(𝐶, ℝ, < ))
144	13, 11	readdcld 9948	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (sup(𝐵, ℝ, < ) + 𝑎) ∈ ℝ)
145		eleq1a 2683	. . . . . . . 8 ⊢ ((sup(𝐵, ℝ, < ) + 𝑎) ∈ ℝ → (𝑧 = (sup(𝐵, ℝ, < ) + 𝑎) → 𝑧 ∈ ℝ))
146	144, 145	syl 17	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐴) → (𝑧 = (sup(𝐵, ℝ, < ) + 𝑎) → 𝑧 ∈ ℝ))
147	146	rexlimdva 3013	. . . . . 6 ⊢ (𝜑 → (∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎) → 𝑧 ∈ ℝ))
148	147	abssdv 3639	. . . . 5 ⊢ (𝜑 → {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)} ⊆ ℝ)
149		ovex 6577	. . . . . . . . . 10 ⊢ (sup(𝐵, ℝ, < ) + 𝑎) ∈ V
150	149	isseti 3182	. . . . . . . . 9 ⊢ ∃𝑧 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)
151	150	rgenw 2908	. . . . . . . 8 ⊢ ∀𝑎 ∈ 𝐴 ∃𝑧 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)
152		r19.2z 4012	. . . . . . . 8 ⊢ ((𝐴 ≠ ∅ ∧ ∀𝑎 ∈ 𝐴 ∃𝑧 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)) → ∃𝑎 ∈ 𝐴 ∃𝑧 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎))
153	2, 151, 152	sylancl 693	. . . . . . 7 ⊢ (𝜑 → ∃𝑎 ∈ 𝐴 ∃𝑧 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎))
154		rexcom4 3198	. . . . . . 7 ⊢ (∃𝑎 ∈ 𝐴 ∃𝑧 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎) ↔ ∃𝑧∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎))
155	153, 154	sylib 207	. . . . . 6 ⊢ (𝜑 → ∃𝑧∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎))
156		abn0 3908	. . . . . 6 ⊢ ({𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)} ≠ ∅ ↔ ∃𝑧∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎))
157	155, 156	sylibr 223	. . . . 5 ⊢ (𝜑 → {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)} ≠ ∅)
158	131	ralbidv 2969	. . . . . . 7 ⊢ (𝑥 = sup(𝐶, ℝ, < ) → (∀𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}𝑤 ≤ 𝑥 ↔ ∀𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}𝑤 ≤ sup(𝐶, ℝ, < )))
159	158	rspcev 3282	. . . . . 6 ⊢ ((sup(𝐶, ℝ, < ) ∈ ℝ ∧ ∀𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}𝑤 ≤ sup(𝐶, ℝ, < )) → ∃𝑥 ∈ ℝ ∀𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}𝑤 ≤ 𝑥)
160	129, 143, 159	syl2anc 691	. . . . 5 ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}𝑤 ≤ 𝑥)
161		suprleub 10866	. . . . 5 ⊢ ((({𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)} ⊆ ℝ ∧ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)} ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}𝑤 ≤ 𝑥) ∧ sup(𝐶, ℝ, < ) ∈ ℝ) → (sup({𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}, ℝ, < ) ≤ sup(𝐶, ℝ, < ) ↔ ∀𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}𝑤 ≤ sup(𝐶, ℝ, < )))
162	148, 157, 160, 129, 161	syl31anc 1321	. . . 4 ⊢ (𝜑 → (sup({𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}, ℝ, < ) ≤ sup(𝐶, ℝ, < ) ↔ ∀𝑤 ∈ {𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}𝑤 ≤ sup(𝐶, ℝ, < )))
163	143, 162	mpbird 246	. . 3 ⊢ (𝜑 → sup({𝑧 ∣ ∃𝑎 ∈ 𝐴 𝑧 = (sup(𝐵, ℝ, < ) + 𝑎)}, ℝ, < ) ≤ sup(𝐶, ℝ, < ))
164	20, 163	eqbrtrd 4605	. 2 ⊢ (𝜑 → (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) ≤ sup(𝐶, ℝ, < ))
165		suprleub 10866	. . . 4 ⊢ (((𝐶 ⊆ ℝ ∧ 𝐶 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤 ∈ 𝐶 𝑤 ≤ 𝑥) ∧ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) ∈ ℝ) → (sup(𝐶, ℝ, < ) ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) ↔ ∀𝑤 ∈ 𝐶 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))))
166	64, 80, 107, 83, 165	syl31anc 1321	. . 3 ⊢ (𝜑 → (sup(𝐶, ℝ, < ) ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) ↔ ∀𝑤 ∈ 𝐶 𝑤 ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < ))))
167	103, 166	mpbird 246	. 2 ⊢ (𝜑 → sup(𝐶, ℝ, < ) ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )))
168	83, 129	letri3d 10058	. 2 ⊢ (𝜑 → ((sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) = sup(𝐶, ℝ, < ) ↔ ((sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) ≤ sup(𝐶, ℝ, < ) ∧ sup(𝐶, ℝ, < ) ≤ (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )))))
169	164, 167, 168	mpbir2and 959	1 ⊢ (𝜑 → (sup(𝐴, ℝ, < ) + sup(𝐵, ℝ, < )) = sup(𝐶, ℝ, < ))

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   ∧ w3a 1031   = wceq 1475  ∃wex 1695   ∈ wcel 1977  {cab 2596   ≠ wne 2780  ∀wral 2896  ∃wrex 2897   ⊆ wss 3540  ∅c0 3874   class class class wbr 4583  (class class class)co 6549  supcsup 8229  ℝcr 9814   + caddc 9818   < clt 9953   ≤ cle 9954

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-po 4959  df-so 4960  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-er 7629  df-en 7842  df-dom 7843  df-sdom 7844  df-sup 8231  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148

This theorem is referenced by:  ismblfin  32620  itg2addnc  32634  sge0resplit  39299