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Theorem isomenndlem 43166
 Description: 𝑂 is sub-additive w.r.t. countable indexed union, implies that 𝑂 is sub-additive w.r.t. countable union. Thus, the definition of Outer Measure can be given using an indexed union. Definition 113A of [Fremlin1] p. 19 . (Contributed by Glauco Siliprandi, 11-Oct-2020.)
Hypotheses
Ref Expression
isomenndlem.o (𝜑𝑂:𝒫 𝑋⟶(0[,]+∞))
isomenndlem.o0 (𝜑 → (𝑂‘∅) = 0)
isomenndlem.y (𝜑𝑌 ⊆ 𝒫 𝑋)
isomenndlem.subadd ((𝜑𝑎:ℕ⟶𝒫 𝑋) → (𝑂 𝑛 ∈ ℕ (𝑎𝑛)) ≤ (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝑎𝑛)))))
isomenndlem.b (𝜑𝐵 ⊆ ℕ)
isomenndlem.f (𝜑𝐹:𝐵1-1-onto𝑌)
isomenndlem.a 𝐴 = (𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅))
Assertion
Ref Expression
isomenndlem (𝜑 → (𝑂 𝑌) ≤ (Σ^‘(𝑂𝑌)))
Distinct variable groups:   𝐴,𝑎,𝑛   𝐵,𝑛   𝑛,𝐹   𝑂,𝑎,𝑛   𝑋,𝑎   𝑛,𝑌   𝜑,𝑎,𝑛
Allowed substitution hints:   𝐵(𝑎)   𝐹(𝑎)   𝑋(𝑛)   𝑌(𝑎)

Proof of Theorem isomenndlem
Dummy variable 𝑦 is distinct from all other variables.
StepHypRef Expression
1 id 22 . . 3 (𝜑𝜑)
2 iftrue 4434 . . . . . . . . 9 (𝑛𝐵 → if(𝑛𝐵, (𝐹𝑛), ∅) = (𝐹𝑛))
32adantl 485 . . . . . . . 8 ((𝜑𝑛𝐵) → if(𝑛𝐵, (𝐹𝑛), ∅) = (𝐹𝑛))
4 isomenndlem.f . . . . . . . . . . 11 (𝜑𝐹:𝐵1-1-onto𝑌)
5 f1of 6594 . . . . . . . . . . 11 (𝐹:𝐵1-1-onto𝑌𝐹:𝐵𝑌)
64, 5syl 17 . . . . . . . . . 10 (𝜑𝐹:𝐵𝑌)
7 ssun1 4102 . . . . . . . . . . 11 𝑌 ⊆ (𝑌 ∪ {∅})
87a1i 11 . . . . . . . . . 10 (𝜑𝑌 ⊆ (𝑌 ∪ {∅}))
96, 8fssd 6506 . . . . . . . . 9 (𝜑𝐹:𝐵⟶(𝑌 ∪ {∅}))
109ffvelrnda 6832 . . . . . . . 8 ((𝜑𝑛𝐵) → (𝐹𝑛) ∈ (𝑌 ∪ {∅}))
113, 10eqeltrd 2893 . . . . . . 7 ((𝜑𝑛𝐵) → if(𝑛𝐵, (𝐹𝑛), ∅) ∈ (𝑌 ∪ {∅}))
1211adantlr 714 . . . . . 6 (((𝜑𝑛 ∈ ℕ) ∧ 𝑛𝐵) → if(𝑛𝐵, (𝐹𝑛), ∅) ∈ (𝑌 ∪ {∅}))
13 iffalse 4437 . . . . . . . . 9 𝑛𝐵 → if(𝑛𝐵, (𝐹𝑛), ∅) = ∅)
1413adantl 485 . . . . . . . 8 ((𝜑 ∧ ¬ 𝑛𝐵) → if(𝑛𝐵, (𝐹𝑛), ∅) = ∅)
15 0ex 5178 . . . . . . . . . . 11 ∅ ∈ V
1615snid 4564 . . . . . . . . . 10 ∅ ∈ {∅}
17 elun2 4107 . . . . . . . . . 10 (∅ ∈ {∅} → ∅ ∈ (𝑌 ∪ {∅}))
1816, 17ax-mp 5 . . . . . . . . 9 ∅ ∈ (𝑌 ∪ {∅})
1918a1i 11 . . . . . . . 8 ((𝜑 ∧ ¬ 𝑛𝐵) → ∅ ∈ (𝑌 ∪ {∅}))
2014, 19eqeltrd 2893 . . . . . . 7 ((𝜑 ∧ ¬ 𝑛𝐵) → if(𝑛𝐵, (𝐹𝑛), ∅) ∈ (𝑌 ∪ {∅}))
2120adantlr 714 . . . . . 6 (((𝜑𝑛 ∈ ℕ) ∧ ¬ 𝑛𝐵) → if(𝑛𝐵, (𝐹𝑛), ∅) ∈ (𝑌 ∪ {∅}))
2212, 21pm2.61dan 812 . . . . 5 ((𝜑𝑛 ∈ ℕ) → if(𝑛𝐵, (𝐹𝑛), ∅) ∈ (𝑌 ∪ {∅}))
23 isomenndlem.a . . . . 5 𝐴 = (𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅))
2422, 23fmptd 6859 . . . 4 (𝜑𝐴:ℕ⟶(𝑌 ∪ {∅}))
25 isomenndlem.y . . . . 5 (𝜑𝑌 ⊆ 𝒫 𝑋)
26 0elpw 5224 . . . . . . 7 ∅ ∈ 𝒫 𝑋
27 snssi 4704 . . . . . . 7 (∅ ∈ 𝒫 𝑋 → {∅} ⊆ 𝒫 𝑋)
2826, 27ax-mp 5 . . . . . 6 {∅} ⊆ 𝒫 𝑋
2928a1i 11 . . . . 5 (𝜑 → {∅} ⊆ 𝒫 𝑋)
3025, 29unssd 4116 . . . 4 (𝜑 → (𝑌 ∪ {∅}) ⊆ 𝒫 𝑋)
3124, 30fssd 6506 . . 3 (𝜑𝐴:ℕ⟶𝒫 𝑋)
32 nnex 11635 . . . . . 6 ℕ ∈ V
3332mptex 6967 . . . . 5 (𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅)) ∈ V
3423, 33eqeltri 2889 . . . 4 𝐴 ∈ V
35 feq1 6472 . . . . . 6 (𝑎 = 𝐴 → (𝑎:ℕ⟶𝒫 𝑋𝐴:ℕ⟶𝒫 𝑋))
3635anbi2d 631 . . . . 5 (𝑎 = 𝐴 → ((𝜑𝑎:ℕ⟶𝒫 𝑋) ↔ (𝜑𝐴:ℕ⟶𝒫 𝑋)))
37 fveq1 6648 . . . . . . . 8 (𝑎 = 𝐴 → (𝑎𝑛) = (𝐴𝑛))
3837iuneq2d 4913 . . . . . . 7 (𝑎 = 𝐴 𝑛 ∈ ℕ (𝑎𝑛) = 𝑛 ∈ ℕ (𝐴𝑛))
3938fveq2d 6653 . . . . . 6 (𝑎 = 𝐴 → (𝑂 𝑛 ∈ ℕ (𝑎𝑛)) = (𝑂 𝑛 ∈ ℕ (𝐴𝑛)))
40 simpl 486 . . . . . . . . . 10 ((𝑎 = 𝐴𝑛 ∈ ℕ) → 𝑎 = 𝐴)
4140fveq1d 6651 . . . . . . . . 9 ((𝑎 = 𝐴𝑛 ∈ ℕ) → (𝑎𝑛) = (𝐴𝑛))
4241fveq2d 6653 . . . . . . . 8 ((𝑎 = 𝐴𝑛 ∈ ℕ) → (𝑂‘(𝑎𝑛)) = (𝑂‘(𝐴𝑛)))
4342mpteq2dva 5128 . . . . . . 7 (𝑎 = 𝐴 → (𝑛 ∈ ℕ ↦ (𝑂‘(𝑎𝑛))) = (𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛))))
4443fveq2d 6653 . . . . . 6 (𝑎 = 𝐴 → (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝑎𝑛)))) = (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛)))))
4539, 44breq12d 5046 . . . . 5 (𝑎 = 𝐴 → ((𝑂 𝑛 ∈ ℕ (𝑎𝑛)) ≤ (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝑎𝑛)))) ↔ (𝑂 𝑛 ∈ ℕ (𝐴𝑛)) ≤ (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛))))))
4636, 45imbi12d 348 . . . 4 (𝑎 = 𝐴 → (((𝜑𝑎:ℕ⟶𝒫 𝑋) → (𝑂 𝑛 ∈ ℕ (𝑎𝑛)) ≤ (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝑎𝑛))))) ↔ ((𝜑𝐴:ℕ⟶𝒫 𝑋) → (𝑂 𝑛 ∈ ℕ (𝐴𝑛)) ≤ (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛)))))))
47 isomenndlem.subadd . . . 4 ((𝜑𝑎:ℕ⟶𝒫 𝑋) → (𝑂 𝑛 ∈ ℕ (𝑎𝑛)) ≤ (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝑎𝑛)))))
4834, 46, 47vtocl 3510 . . 3 ((𝜑𝐴:ℕ⟶𝒫 𝑋) → (𝑂 𝑛 ∈ ℕ (𝐴𝑛)) ≤ (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛)))))
491, 31, 48syl2anc 587 . 2 (𝜑 → (𝑂 𝑛 ∈ ℕ (𝐴𝑛)) ≤ (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛)))))
506ad2antrr 725 . . . . . . . . . . 11 (((𝜑𝐵 = ℕ) ∧ 𝑛 ∈ ℕ) → 𝐹:𝐵𝑌)
51 simpr 488 . . . . . . . . . . . . 13 ((𝐵 = ℕ ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℕ)
52 id 22 . . . . . . . . . . . . . . 15 (𝐵 = ℕ → 𝐵 = ℕ)
5352eqcomd 2807 . . . . . . . . . . . . . 14 (𝐵 = ℕ → ℕ = 𝐵)
5453adantr 484 . . . . . . . . . . . . 13 ((𝐵 = ℕ ∧ 𝑛 ∈ ℕ) → ℕ = 𝐵)
5551, 54eleqtrd 2895 . . . . . . . . . . . 12 ((𝐵 = ℕ ∧ 𝑛 ∈ ℕ) → 𝑛𝐵)
5655adantll 713 . . . . . . . . . . 11 (((𝜑𝐵 = ℕ) ∧ 𝑛 ∈ ℕ) → 𝑛𝐵)
5750, 56ffvelrnd 6833 . . . . . . . . . 10 (((𝜑𝐵 = ℕ) ∧ 𝑛 ∈ ℕ) → (𝐹𝑛) ∈ 𝑌)
58 eqid 2801 . . . . . . . . . 10 (𝑛 ∈ ℕ ↦ (𝐹𝑛)) = (𝑛 ∈ ℕ ↦ (𝐹𝑛))
5957, 58fmptd 6859 . . . . . . . . 9 ((𝜑𝐵 = ℕ) → (𝑛 ∈ ℕ ↦ (𝐹𝑛)):ℕ⟶𝑌)
6023a1i 11 . . . . . . . . . . . 12 (𝐵 = ℕ → 𝐴 = (𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅)))
6155iftrued 4436 . . . . . . . . . . . . 13 ((𝐵 = ℕ ∧ 𝑛 ∈ ℕ) → if(𝑛𝐵, (𝐹𝑛), ∅) = (𝐹𝑛))
6261mpteq2dva 5128 . . . . . . . . . . . 12 (𝐵 = ℕ → (𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅)) = (𝑛 ∈ ℕ ↦ (𝐹𝑛)))
6360, 62eqtrd 2836 . . . . . . . . . . 11 (𝐵 = ℕ → 𝐴 = (𝑛 ∈ ℕ ↦ (𝐹𝑛)))
6463feq1d 6476 . . . . . . . . . 10 (𝐵 = ℕ → (𝐴:ℕ⟶𝑌 ↔ (𝑛 ∈ ℕ ↦ (𝐹𝑛)):ℕ⟶𝑌))
6564adantl 485 . . . . . . . . 9 ((𝜑𝐵 = ℕ) → (𝐴:ℕ⟶𝑌 ↔ (𝑛 ∈ ℕ ↦ (𝐹𝑛)):ℕ⟶𝑌))
6659, 65mpbird 260 . . . . . . . 8 ((𝜑𝐵 = ℕ) → 𝐴:ℕ⟶𝑌)
67 f1ofo 6601 . . . . . . . . . . . . . . . 16 (𝐹:𝐵1-1-onto𝑌𝐹:𝐵onto𝑌)
684, 67syl 17 . . . . . . . . . . . . . . 15 (𝜑𝐹:𝐵onto𝑌)
69 dffo3 6849 . . . . . . . . . . . . . . 15 (𝐹:𝐵onto𝑌 ↔ (𝐹:𝐵𝑌 ∧ ∀𝑦𝑌𝑛𝐵 𝑦 = (𝐹𝑛)))
7068, 69sylib 221 . . . . . . . . . . . . . 14 (𝜑 → (𝐹:𝐵𝑌 ∧ ∀𝑦𝑌𝑛𝐵 𝑦 = (𝐹𝑛)))
7170simprd 499 . . . . . . . . . . . . 13 (𝜑 → ∀𝑦𝑌𝑛𝐵 𝑦 = (𝐹𝑛))
7271adantr 484 . . . . . . . . . . . 12 ((𝜑𝑦𝑌) → ∀𝑦𝑌𝑛𝐵 𝑦 = (𝐹𝑛))
73 simpr 488 . . . . . . . . . . . 12 ((𝜑𝑦𝑌) → 𝑦𝑌)
74 rspa 3174 . . . . . . . . . . . 12 ((∀𝑦𝑌𝑛𝐵 𝑦 = (𝐹𝑛) ∧ 𝑦𝑌) → ∃𝑛𝐵 𝑦 = (𝐹𝑛))
7572, 73, 74syl2anc 587 . . . . . . . . . . 11 ((𝜑𝑦𝑌) → ∃𝑛𝐵 𝑦 = (𝐹𝑛))
7675adantlr 714 . . . . . . . . . 10 (((𝜑𝐵 = ℕ) ∧ 𝑦𝑌) → ∃𝑛𝐵 𝑦 = (𝐹𝑛))
77 nfv 1915 . . . . . . . . . . . 12 𝑛(𝜑𝐵 = ℕ)
78 nfre1 3268 . . . . . . . . . . . 12 𝑛𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)
79 simpr 488 . . . . . . . . . . . . . . . . 17 ((𝐵 = ℕ ∧ 𝑛𝐵) → 𝑛𝐵)
80 simpl 486 . . . . . . . . . . . . . . . . 17 ((𝐵 = ℕ ∧ 𝑛𝐵) → 𝐵 = ℕ)
8179, 80eleqtrd 2895 . . . . . . . . . . . . . . . 16 ((𝐵 = ℕ ∧ 𝑛𝐵) → 𝑛 ∈ ℕ)
8281adantll 713 . . . . . . . . . . . . . . 15 (((𝜑𝐵 = ℕ) ∧ 𝑛𝐵) → 𝑛 ∈ ℕ)
83823adant3 1129 . . . . . . . . . . . . . 14 (((𝜑𝐵 = ℕ) ∧ 𝑛𝐵𝑦 = (𝐹𝑛)) → 𝑛 ∈ ℕ)
8460fveq1d 6651 . . . . . . . . . . . . . . . . 17 (𝐵 = ℕ → (𝐴𝑛) = ((𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅))‘𝑛))
85843ad2ant1 1130 . . . . . . . . . . . . . . . 16 ((𝐵 = ℕ ∧ 𝑛𝐵𝑦 = (𝐹𝑛)) → (𝐴𝑛) = ((𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅))‘𝑛))
86 fvex 6662 . . . . . . . . . . . . . . . . . . . . 21 (𝐹𝑛) ∈ V
8786, 15ifex 4476 . . . . . . . . . . . . . . . . . . . 20 if(𝑛𝐵, (𝐹𝑛), ∅) ∈ V
8887a1i 11 . . . . . . . . . . . . . . . . . . 19 ((𝐵 = ℕ ∧ 𝑛𝐵) → if(𝑛𝐵, (𝐹𝑛), ∅) ∈ V)
89 eqid 2801 . . . . . . . . . . . . . . . . . . . 20 (𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅)) = (𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅))
9089fvmpt2 6760 . . . . . . . . . . . . . . . . . . 19 ((𝑛 ∈ ℕ ∧ if(𝑛𝐵, (𝐹𝑛), ∅) ∈ V) → ((𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅))‘𝑛) = if(𝑛𝐵, (𝐹𝑛), ∅))
9181, 88, 90syl2anc 587 . . . . . . . . . . . . . . . . . 18 ((𝐵 = ℕ ∧ 𝑛𝐵) → ((𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅))‘𝑛) = if(𝑛𝐵, (𝐹𝑛), ∅))
922adantl 485 . . . . . . . . . . . . . . . . . 18 ((𝐵 = ℕ ∧ 𝑛𝐵) → if(𝑛𝐵, (𝐹𝑛), ∅) = (𝐹𝑛))
9391, 92eqtrd 2836 . . . . . . . . . . . . . . . . 17 ((𝐵 = ℕ ∧ 𝑛𝐵) → ((𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅))‘𝑛) = (𝐹𝑛))
94933adant3 1129 . . . . . . . . . . . . . . . 16 ((𝐵 = ℕ ∧ 𝑛𝐵𝑦 = (𝐹𝑛)) → ((𝑛 ∈ ℕ ↦ if(𝑛𝐵, (𝐹𝑛), ∅))‘𝑛) = (𝐹𝑛))
95 id 22 . . . . . . . . . . . . . . . . . 18 (𝑦 = (𝐹𝑛) → 𝑦 = (𝐹𝑛))
9695eqcomd 2807 . . . . . . . . . . . . . . . . 17 (𝑦 = (𝐹𝑛) → (𝐹𝑛) = 𝑦)
97963ad2ant3 1132 . . . . . . . . . . . . . . . 16 ((𝐵 = ℕ ∧ 𝑛𝐵𝑦 = (𝐹𝑛)) → (𝐹𝑛) = 𝑦)
9885, 94, 973eqtrrd 2841 . . . . . . . . . . . . . . 15 ((𝐵 = ℕ ∧ 𝑛𝐵𝑦 = (𝐹𝑛)) → 𝑦 = (𝐴𝑛))
99983adant1l 1173 . . . . . . . . . . . . . 14 (((𝜑𝐵 = ℕ) ∧ 𝑛𝐵𝑦 = (𝐹𝑛)) → 𝑦 = (𝐴𝑛))
100 rspe 3266 . . . . . . . . . . . . . 14 ((𝑛 ∈ ℕ ∧ 𝑦 = (𝐴𝑛)) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
10183, 99, 100syl2anc 587 . . . . . . . . . . . . 13 (((𝜑𝐵 = ℕ) ∧ 𝑛𝐵𝑦 = (𝐹𝑛)) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
1021013exp 1116 . . . . . . . . . . . 12 ((𝜑𝐵 = ℕ) → (𝑛𝐵 → (𝑦 = (𝐹𝑛) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))))
10377, 78, 102rexlimd 3279 . . . . . . . . . . 11 ((𝜑𝐵 = ℕ) → (∃𝑛𝐵 𝑦 = (𝐹𝑛) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)))
104103adantr 484 . . . . . . . . . 10 (((𝜑𝐵 = ℕ) ∧ 𝑦𝑌) → (∃𝑛𝐵 𝑦 = (𝐹𝑛) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)))
10576, 104mpd 15 . . . . . . . . 9 (((𝜑𝐵 = ℕ) ∧ 𝑦𝑌) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
106105ralrimiva 3152 . . . . . . . 8 ((𝜑𝐵 = ℕ) → ∀𝑦𝑌𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
10766, 106jca 515 . . . . . . 7 ((𝜑𝐵 = ℕ) → (𝐴:ℕ⟶𝑌 ∧ ∀𝑦𝑌𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)))
108 dffo3 6849 . . . . . . 7 (𝐴:ℕ–onto𝑌 ↔ (𝐴:ℕ⟶𝑌 ∧ ∀𝑦𝑌𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)))
109107, 108sylibr 237 . . . . . 6 ((𝜑𝐵 = ℕ) → 𝐴:ℕ–onto𝑌)
110 founiiun 41800 . . . . . 6 (𝐴:ℕ–onto𝑌 𝑌 = 𝑛 ∈ ℕ (𝐴𝑛))
111109, 110syl 17 . . . . 5 ((𝜑𝐵 = ℕ) → 𝑌 = 𝑛 ∈ ℕ (𝐴𝑛))
112 uniun 4826 . . . . . . . 8 (𝑌 ∪ {∅}) = ( 𝑌 {∅})
11315unisn 4823 . . . . . . . . 9 {∅} = ∅
114113uneq2i 4090 . . . . . . . 8 ( 𝑌 {∅}) = ( 𝑌 ∪ ∅)
115 un0 4301 . . . . . . . 8 ( 𝑌 ∪ ∅) = 𝑌
116112, 114, 1153eqtrri 2829 . . . . . . 7 𝑌 = (𝑌 ∪ {∅})
117116a1i 11 . . . . . 6 ((𝜑 ∧ ¬ 𝐵 = ℕ) → 𝑌 = (𝑌 ∪ {∅}))
11824adantr 484 . . . . . . . . 9 ((𝜑 ∧ ¬ 𝐵 = ℕ) → 𝐴:ℕ⟶(𝑌 ∪ {∅}))
119 nfv 1915 . . . . . . . . . . . . 13 𝑛((𝜑 ∧ ¬ 𝐵 = ℕ) ∧ 𝑦 = ∅)
120 isomenndlem.b . . . . . . . . . . . . . . . . . 18 (𝜑𝐵 ⊆ ℕ)
121120adantr 484 . . . . . . . . . . . . . . . . 17 ((𝜑 ∧ ¬ 𝐵 = ℕ) → 𝐵 ⊆ ℕ)
12252necon3bi 3016 . . . . . . . . . . . . . . . . . 18 𝐵 = ℕ → 𝐵 ≠ ℕ)
123122adantl 485 . . . . . . . . . . . . . . . . 17 ((𝜑 ∧ ¬ 𝐵 = ℕ) → 𝐵 ≠ ℕ)
124121, 123jca 515 . . . . . . . . . . . . . . . 16 ((𝜑 ∧ ¬ 𝐵 = ℕ) → (𝐵 ⊆ ℕ ∧ 𝐵 ≠ ℕ))
125 df-pss 3903 . . . . . . . . . . . . . . . 16 (𝐵 ⊊ ℕ ↔ (𝐵 ⊆ ℕ ∧ 𝐵 ≠ ℕ))
126124, 125sylibr 237 . . . . . . . . . . . . . . 15 ((𝜑 ∧ ¬ 𝐵 = ℕ) → 𝐵 ⊊ ℕ)
127 pssnel 4381 . . . . . . . . . . . . . . 15 (𝐵 ⊊ ℕ → ∃𝑛(𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵))
128126, 127syl 17 . . . . . . . . . . . . . 14 ((𝜑 ∧ ¬ 𝐵 = ℕ) → ∃𝑛(𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵))
129128adantr 484 . . . . . . . . . . . . 13 (((𝜑 ∧ ¬ 𝐵 = ℕ) ∧ 𝑦 = ∅) → ∃𝑛(𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵))
130 simprl 770 . . . . . . . . . . . . . . . 16 (((𝜑𝑦 = ∅) ∧ (𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵)) → 𝑛 ∈ ℕ)
131 simprl 770 . . . . . . . . . . . . . . . . . . 19 ((𝜑 ∧ (𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵)) → 𝑛 ∈ ℕ)
13287a1i 11 . . . . . . . . . . . . . . . . . . 19 ((𝜑 ∧ (𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵)) → if(𝑛𝐵, (𝐹𝑛), ∅) ∈ V)
13323fvmpt2 6760 . . . . . . . . . . . . . . . . . . 19 ((𝑛 ∈ ℕ ∧ if(𝑛𝐵, (𝐹𝑛), ∅) ∈ V) → (𝐴𝑛) = if(𝑛𝐵, (𝐹𝑛), ∅))
134131, 132, 133syl2anc 587 . . . . . . . . . . . . . . . . . 18 ((𝜑 ∧ (𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵)) → (𝐴𝑛) = if(𝑛𝐵, (𝐹𝑛), ∅))
135134adantlr 714 . . . . . . . . . . . . . . . . 17 (((𝜑𝑦 = ∅) ∧ (𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵)) → (𝐴𝑛) = if(𝑛𝐵, (𝐹𝑛), ∅))
13613ad2antll 728 . . . . . . . . . . . . . . . . 17 (((𝜑𝑦 = ∅) ∧ (𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵)) → if(𝑛𝐵, (𝐹𝑛), ∅) = ∅)
137 id 22 . . . . . . . . . . . . . . . . . . 19 (𝑦 = ∅ → 𝑦 = ∅)
138137eqcomd 2807 . . . . . . . . . . . . . . . . . 18 (𝑦 = ∅ → ∅ = 𝑦)
139138ad2antlr 726 . . . . . . . . . . . . . . . . 17 (((𝜑𝑦 = ∅) ∧ (𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵)) → ∅ = 𝑦)
140135, 136, 1393eqtrrd 2841 . . . . . . . . . . . . . . . 16 (((𝜑𝑦 = ∅) ∧ (𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵)) → 𝑦 = (𝐴𝑛))
141130, 140, 100syl2anc 587 . . . . . . . . . . . . . . 15 (((𝜑𝑦 = ∅) ∧ (𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵)) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
142141ex 416 . . . . . . . . . . . . . 14 ((𝜑𝑦 = ∅) → ((𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)))
143142adantlr 714 . . . . . . . . . . . . 13 (((𝜑 ∧ ¬ 𝐵 = ℕ) ∧ 𝑦 = ∅) → ((𝑛 ∈ ℕ ∧ ¬ 𝑛𝐵) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)))
144119, 78, 129, 143exlimimdd 2218 . . . . . . . . . . . 12 (((𝜑 ∧ ¬ 𝐵 = ℕ) ∧ 𝑦 = ∅) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
145144adantlr 714 . . . . . . . . . . 11 ((((𝜑 ∧ ¬ 𝐵 = ℕ) ∧ 𝑦 ∈ (𝑌 ∪ {∅})) ∧ 𝑦 = ∅) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
146 simplll 774 . . . . . . . . . . . 12 ((((𝜑 ∧ ¬ 𝐵 = ℕ) ∧ 𝑦 ∈ (𝑌 ∪ {∅})) ∧ ¬ 𝑦 = ∅) → 𝜑)
147 simpl 486 . . . . . . . . . . . . . 14 ((𝑦 ∈ (𝑌 ∪ {∅}) ∧ ¬ 𝑦 = ∅) → 𝑦 ∈ (𝑌 ∪ {∅}))
148 elsni 4545 . . . . . . . . . . . . . . . 16 (𝑦 ∈ {∅} → 𝑦 = ∅)
149148con3i 157 . . . . . . . . . . . . . . 15 𝑦 = ∅ → ¬ 𝑦 ∈ {∅})
150149adantl 485 . . . . . . . . . . . . . 14 ((𝑦 ∈ (𝑌 ∪ {∅}) ∧ ¬ 𝑦 = ∅) → ¬ 𝑦 ∈ {∅})
151 elunnel2 41665 . . . . . . . . . . . . . 14 ((𝑦 ∈ (𝑌 ∪ {∅}) ∧ ¬ 𝑦 ∈ {∅}) → 𝑦𝑌)
152147, 150, 151syl2anc 587 . . . . . . . . . . . . 13 ((𝑦 ∈ (𝑌 ∪ {∅}) ∧ ¬ 𝑦 = ∅) → 𝑦𝑌)
153152adantll 713 . . . . . . . . . . . 12 ((((𝜑 ∧ ¬ 𝐵 = ℕ) ∧ 𝑦 ∈ (𝑌 ∪ {∅})) ∧ ¬ 𝑦 = ∅) → 𝑦𝑌)
15468adantr 484 . . . . . . . . . . . . . 14 ((𝜑𝑦𝑌) → 𝐹:𝐵onto𝑌)
155 foelrni 6706 . . . . . . . . . . . . . 14 ((𝐹:𝐵onto𝑌𝑦𝑌) → ∃𝑛𝐵 (𝐹𝑛) = 𝑦)
156154, 73, 155syl2anc 587 . . . . . . . . . . . . 13 ((𝜑𝑦𝑌) → ∃𝑛𝐵 (𝐹𝑛) = 𝑦)
157 nfv 1915 . . . . . . . . . . . . . 14 𝑛(𝜑𝑦𝑌)
158120sselda 3918 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑛𝐵) → 𝑛 ∈ ℕ)
1591583adant3 1129 . . . . . . . . . . . . . . . . 17 ((𝜑𝑛𝐵 ∧ (𝐹𝑛) = 𝑦) → 𝑛 ∈ ℕ)
160158, 87, 133sylancl 589 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑛𝐵) → (𝐴𝑛) = if(𝑛𝐵, (𝐹𝑛), ∅))
161160, 3eqtrd 2836 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑛𝐵) → (𝐴𝑛) = (𝐹𝑛))
1621613adant3 1129 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑛𝐵 ∧ (𝐹𝑛) = 𝑦) → (𝐴𝑛) = (𝐹𝑛))
163 simp3 1135 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑛𝐵 ∧ (𝐹𝑛) = 𝑦) → (𝐹𝑛) = 𝑦)
164162, 163eqtr2d 2837 . . . . . . . . . . . . . . . . 17 ((𝜑𝑛𝐵 ∧ (𝐹𝑛) = 𝑦) → 𝑦 = (𝐴𝑛))
165159, 164, 100syl2anc 587 . . . . . . . . . . . . . . . 16 ((𝜑𝑛𝐵 ∧ (𝐹𝑛) = 𝑦) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
1661653exp 1116 . . . . . . . . . . . . . . 15 (𝜑 → (𝑛𝐵 → ((𝐹𝑛) = 𝑦 → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))))
167166adantr 484 . . . . . . . . . . . . . 14 ((𝜑𝑦𝑌) → (𝑛𝐵 → ((𝐹𝑛) = 𝑦 → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))))
168157, 78, 167rexlimd 3279 . . . . . . . . . . . . 13 ((𝜑𝑦𝑌) → (∃𝑛𝐵 (𝐹𝑛) = 𝑦 → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)))
169156, 168mpd 15 . . . . . . . . . . . 12 ((𝜑𝑦𝑌) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
170146, 153, 169syl2anc 587 . . . . . . . . . . 11 ((((𝜑 ∧ ¬ 𝐵 = ℕ) ∧ 𝑦 ∈ (𝑌 ∪ {∅})) ∧ ¬ 𝑦 = ∅) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
171145, 170pm2.61dan 812 . . . . . . . . . 10 (((𝜑 ∧ ¬ 𝐵 = ℕ) ∧ 𝑦 ∈ (𝑌 ∪ {∅})) → ∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
172171ralrimiva 3152 . . . . . . . . 9 ((𝜑 ∧ ¬ 𝐵 = ℕ) → ∀𝑦 ∈ (𝑌 ∪ {∅})∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛))
173118, 172jca 515 . . . . . . . 8 ((𝜑 ∧ ¬ 𝐵 = ℕ) → (𝐴:ℕ⟶(𝑌 ∪ {∅}) ∧ ∀𝑦 ∈ (𝑌 ∪ {∅})∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)))
174 dffo3 6849 . . . . . . . 8 (𝐴:ℕ–onto→(𝑌 ∪ {∅}) ↔ (𝐴:ℕ⟶(𝑌 ∪ {∅}) ∧ ∀𝑦 ∈ (𝑌 ∪ {∅})∃𝑛 ∈ ℕ 𝑦 = (𝐴𝑛)))
175173, 174sylibr 237 . . . . . . 7 ((𝜑 ∧ ¬ 𝐵 = ℕ) → 𝐴:ℕ–onto→(𝑌 ∪ {∅}))
176 founiiun 41800 . . . . . . 7 (𝐴:ℕ–onto→(𝑌 ∪ {∅}) → (𝑌 ∪ {∅}) = 𝑛 ∈ ℕ (𝐴𝑛))
177175, 176syl 17 . . . . . 6 ((𝜑 ∧ ¬ 𝐵 = ℕ) → (𝑌 ∪ {∅}) = 𝑛 ∈ ℕ (𝐴𝑛))
178117, 177eqtrd 2836 . . . . 5 ((𝜑 ∧ ¬ 𝐵 = ℕ) → 𝑌 = 𝑛 ∈ ℕ (𝐴𝑛))
179111, 178pm2.61dan 812 . . . 4 (𝜑 𝑌 = 𝑛 ∈ ℕ (𝐴𝑛))
180179fveq2d 6653 . . 3 (𝜑 → (𝑂 𝑌) = (𝑂 𝑛 ∈ ℕ (𝐴𝑛)))
181 uncom 4083 . . . . . . . . 9 ((ℕ ∖ 𝐵) ∪ 𝐵) = (𝐵 ∪ (ℕ ∖ 𝐵))
182181a1i 11 . . . . . . . 8 (𝜑 → ((ℕ ∖ 𝐵) ∪ 𝐵) = (𝐵 ∪ (ℕ ∖ 𝐵)))
183 undif 4391 . . . . . . . . 9 (𝐵 ⊆ ℕ ↔ (𝐵 ∪ (ℕ ∖ 𝐵)) = ℕ)
184120, 183sylib 221 . . . . . . . 8 (𝜑 → (𝐵 ∪ (ℕ ∖ 𝐵)) = ℕ)
185182, 184eqtrd 2836 . . . . . . 7 (𝜑 → ((ℕ ∖ 𝐵) ∪ 𝐵) = ℕ)
186185eqcomd 2807 . . . . . 6 (𝜑 → ℕ = ((ℕ ∖ 𝐵) ∪ 𝐵))
187186mpteq1d 5122 . . . . 5 (𝜑 → (𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛))) = (𝑛 ∈ ((ℕ ∖ 𝐵) ∪ 𝐵) ↦ (𝑂‘(𝐴𝑛))))
188187fveq2d 6653 . . . 4 (𝜑 → (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛)))) = (Σ^‘(𝑛 ∈ ((ℕ ∖ 𝐵) ∪ 𝐵) ↦ (𝑂‘(𝐴𝑛)))))
189 nfv 1915 . . . . 5 𝑛𝜑
190 difexg 5198 . . . . . . 7 (ℕ ∈ V → (ℕ ∖ 𝐵) ∈ V)
19132, 190ax-mp 5 . . . . . 6 (ℕ ∖ 𝐵) ∈ V
192191a1i 11 . . . . 5 (𝜑 → (ℕ ∖ 𝐵) ∈ V)
19332a1i 11 . . . . . 6 (𝜑 → ℕ ∈ V)
194193, 120ssexd 5195 . . . . 5 (𝜑𝐵 ∈ V)
195 incom 4131 . . . . . . 7 ((ℕ ∖ 𝐵) ∩ 𝐵) = (𝐵 ∩ (ℕ ∖ 𝐵))
196 disjdif 4382 . . . . . . 7 (𝐵 ∩ (ℕ ∖ 𝐵)) = ∅
197195, 196eqtri 2824 . . . . . 6 ((ℕ ∖ 𝐵) ∩ 𝐵) = ∅
198197a1i 11 . . . . 5 (𝜑 → ((ℕ ∖ 𝐵) ∩ 𝐵) = ∅)
199 simpl 486 . . . . . 6 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → 𝜑)
200 eldifi 4057 . . . . . . 7 (𝑛 ∈ (ℕ ∖ 𝐵) → 𝑛 ∈ ℕ)
201200adantl 485 . . . . . 6 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → 𝑛 ∈ ℕ)
202 isomenndlem.o . . . . . . . 8 (𝜑𝑂:𝒫 𝑋⟶(0[,]+∞))
203202adantr 484 . . . . . . 7 ((𝜑𝑛 ∈ ℕ) → 𝑂:𝒫 𝑋⟶(0[,]+∞))
20431ffvelrnda 6832 . . . . . . 7 ((𝜑𝑛 ∈ ℕ) → (𝐴𝑛) ∈ 𝒫 𝑋)
205203, 204ffvelrnd 6833 . . . . . 6 ((𝜑𝑛 ∈ ℕ) → (𝑂‘(𝐴𝑛)) ∈ (0[,]+∞))
206199, 201, 205syl2anc 587 . . . . 5 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → (𝑂‘(𝐴𝑛)) ∈ (0[,]+∞))
207158, 205syldan 594 . . . . 5 ((𝜑𝑛𝐵) → (𝑂‘(𝐴𝑛)) ∈ (0[,]+∞))
208189, 192, 194, 198, 206, 207sge0splitmpt 43047 . . . 4 (𝜑 → (Σ^‘(𝑛 ∈ ((ℕ ∖ 𝐵) ∪ 𝐵) ↦ (𝑂‘(𝐴𝑛)))) = ((Σ^‘(𝑛 ∈ (ℕ ∖ 𝐵) ↦ (𝑂‘(𝐴𝑛)))) +𝑒^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛))))))
209 eqid 2801 . . . . . . . 8 (𝑛𝐵 ↦ (𝑂‘(𝐴𝑛))) = (𝑛𝐵 ↦ (𝑂‘(𝐴𝑛)))
210207, 209fmptd 6859 . . . . . . 7 (𝜑 → (𝑛𝐵 ↦ (𝑂‘(𝐴𝑛))):𝐵⟶(0[,]+∞))
211194, 210sge0xrcl 43021 . . . . . 6 (𝜑 → (Σ^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛)))) ∈ ℝ*)
212211xaddid2d 41948 . . . . 5 (𝜑 → (0 +𝑒^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛))))) = (Σ^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛)))))
21387a1i 11 . . . . . . . . . . . . 13 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → if(𝑛𝐵, (𝐹𝑛), ∅) ∈ V)
214201, 213, 133syl2anc 587 . . . . . . . . . . . 12 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → (𝐴𝑛) = if(𝑛𝐵, (𝐹𝑛), ∅))
215 eldifn 4058 . . . . . . . . . . . . . 14 (𝑛 ∈ (ℕ ∖ 𝐵) → ¬ 𝑛𝐵)
216215adantl 485 . . . . . . . . . . . . 13 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → ¬ 𝑛𝐵)
217216iffalsed 4439 . . . . . . . . . . . 12 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → if(𝑛𝐵, (𝐹𝑛), ∅) = ∅)
218214, 217eqtrd 2836 . . . . . . . . . . 11 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → (𝐴𝑛) = ∅)
219218fveq2d 6653 . . . . . . . . . 10 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → (𝑂‘(𝐴𝑛)) = (𝑂‘∅))
220 isomenndlem.o0 . . . . . . . . . . 11 (𝜑 → (𝑂‘∅) = 0)
221199, 220syl 17 . . . . . . . . . 10 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → (𝑂‘∅) = 0)
222219, 221eqtrd 2836 . . . . . . . . 9 ((𝜑𝑛 ∈ (ℕ ∖ 𝐵)) → (𝑂‘(𝐴𝑛)) = 0)
223222mpteq2dva 5128 . . . . . . . 8 (𝜑 → (𝑛 ∈ (ℕ ∖ 𝐵) ↦ (𝑂‘(𝐴𝑛))) = (𝑛 ∈ (ℕ ∖ 𝐵) ↦ 0))
224223fveq2d 6653 . . . . . . 7 (𝜑 → (Σ^‘(𝑛 ∈ (ℕ ∖ 𝐵) ↦ (𝑂‘(𝐴𝑛)))) = (Σ^‘(𝑛 ∈ (ℕ ∖ 𝐵) ↦ 0)))
225189, 192sge0z 43011 . . . . . . 7 (𝜑 → (Σ^‘(𝑛 ∈ (ℕ ∖ 𝐵) ↦ 0)) = 0)
226224, 225eqtrd 2836 . . . . . 6 (𝜑 → (Σ^‘(𝑛 ∈ (ℕ ∖ 𝐵) ↦ (𝑂‘(𝐴𝑛)))) = 0)
227226oveq1d 7154 . . . . 5 (𝜑 → ((Σ^‘(𝑛 ∈ (ℕ ∖ 𝐵) ↦ (𝑂‘(𝐴𝑛)))) +𝑒^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛))))) = (0 +𝑒^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛))))))
228202, 25feqresmpt 6713 . . . . . . 7 (𝜑 → (𝑂𝑌) = (𝑦𝑌 ↦ (𝑂𝑦)))
229228fveq2d 6653 . . . . . 6 (𝜑 → (Σ^‘(𝑂𝑌)) = (Σ^‘(𝑦𝑌 ↦ (𝑂𝑦))))
230 nfv 1915 . . . . . . 7 𝑦𝜑
231 fveq2 6649 . . . . . . 7 (𝑦 = (𝐴𝑛) → (𝑂𝑦) = (𝑂‘(𝐴𝑛)))
232161eqcomd 2807 . . . . . . 7 ((𝜑𝑛𝐵) → (𝐹𝑛) = (𝐴𝑛))
233202adantr 484 . . . . . . . 8 ((𝜑𝑦𝑌) → 𝑂:𝒫 𝑋⟶(0[,]+∞))
23425sselda 3918 . . . . . . . 8 ((𝜑𝑦𝑌) → 𝑦 ∈ 𝒫 𝑋)
235233, 234ffvelrnd 6833 . . . . . . 7 ((𝜑𝑦𝑌) → (𝑂𝑦) ∈ (0[,]+∞))
236230, 189, 231, 194, 4, 232, 235sge0f1o 43018 . . . . . 6 (𝜑 → (Σ^‘(𝑦𝑌 ↦ (𝑂𝑦))) = (Σ^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛)))))
237 eqidd 2802 . . . . . 6 (𝜑 → (Σ^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛)))) = (Σ^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛)))))
238229, 236, 2373eqtrd 2840 . . . . 5 (𝜑 → (Σ^‘(𝑂𝑌)) = (Σ^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛)))))
239212, 227, 2383eqtr4d 2846 . . . 4 (𝜑 → ((Σ^‘(𝑛 ∈ (ℕ ∖ 𝐵) ↦ (𝑂‘(𝐴𝑛)))) +𝑒^‘(𝑛𝐵 ↦ (𝑂‘(𝐴𝑛))))) = (Σ^‘(𝑂𝑌)))
240188, 208, 2393eqtrrd 2841 . . 3 (𝜑 → (Σ^‘(𝑂𝑌)) = (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛)))))
241180, 240breq12d 5046 . 2 (𝜑 → ((𝑂 𝑌) ≤ (Σ^‘(𝑂𝑌)) ↔ (𝑂 𝑛 ∈ ℕ (𝐴𝑛)) ≤ (Σ^‘(𝑛 ∈ ℕ ↦ (𝑂‘(𝐴𝑛))))))
24249, 241mpbird 260 1 (𝜑 → (𝑂 𝑌) ≤ (Σ^‘(𝑂𝑌)))
 Colors of variables: wff setvar class Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 209   ∧ wa 399   ∧ w3a 1084   = wceq 1538  ∃wex 1781   ∈ wcel 2112   ≠ wne 2990  ∀wral 3109  ∃wrex 3110  Vcvv 3444   ∖ cdif 3881   ∪ cun 3882   ∩ cin 3883   ⊆ wss 3884   ⊊ wpss 3885  ∅c0 4246  ifcif 4428  𝒫 cpw 4500  {csn 4528  ∪ cuni 4803  ∪ ciun 4884   class class class wbr 5033   ↦ cmpt 5113   ↾ cres 5525  ⟶wf 6324  –onto→wfo 6326  –1-1-onto→wf1o 6327  ‘cfv 6328  (class class class)co 7139  0cc0 10530  +∞cpnf 10665   ≤ cle 10669  ℕcn 11629   +𝑒 cxad 12497  [,]cicc 12733  Σ^csumge0 42998 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 1911  ax-6 1970  ax-7 2015  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2159  ax-12 2176  ax-ext 2773  ax-rep 5157  ax-sep 5170  ax-nul 5177  ax-pow 5234  ax-pr 5298  ax-un 7445  ax-inf2 9092  ax-cnex 10586  ax-resscn 10587  ax-1cn 10588  ax-icn 10589  ax-addcl 10590  ax-addrcl 10591  ax-mulcl 10592  ax-mulrcl 10593  ax-mulcom 10594  ax-addass 10595  ax-mulass 10596  ax-distr 10597  ax-i2m1 10598  ax-1ne0 10599  ax-1rid 10600  ax-rnegex 10601  ax-rrecex 10602  ax-cnre 10603  ax-pre-lttri 10604  ax-pre-lttrn 10605  ax-pre-ltadd 10606  ax-pre-mulgt0 10607  ax-pre-sup 10608 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-fal 1551  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2601  df-eu 2632  df-clab 2780  df-cleq 2794  df-clel 2873  df-nfc 2941  df-ne 2991  df-nel 3095  df-ral 3114  df-rex 3115  df-reu 3116  df-rmo 3117  df-rab 3118  df-v 3446  df-sbc 3724  df-csb 3832  df-dif 3887  df-un 3889  df-in 3891  df-ss 3901  df-pss 3903  df-nul 4247  df-if 4429  df-pw 4502  df-sn 4529  df-pr 4531  df-tp 4533  df-op 4535  df-uni 4804  df-int 4842  df-iun 4886  df-br 5034  df-opab 5096  df-mpt 5114  df-tr 5140  df-id 5428  df-eprel 5433  df-po 5442  df-so 5443  df-fr 5482  df-se 5483  df-we 5484  df-xp 5529  df-rel 5530  df-cnv 5531  df-co 5532  df-dm 5533  df-rn 5534  df-res 5535  df-ima 5536  df-pred 6120  df-ord 6166  df-on 6167  df-lim 6168  df-suc 6169  df-iota 6287  df-fun 6330  df-fn 6331  df-f 6332  df-f1 6333  df-fo 6334  df-f1o 6335  df-fv 6336  df-isom 6337  df-riota 7097  df-ov 7142  df-oprab 7143  df-mpo 7144  df-om 7565  df-1st 7675  df-2nd 7676  df-wrecs 7934  df-recs 7995  df-rdg 8033  df-1o 8089  df-oadd 8093  df-er 8276  df-en 8497  df-dom 8498  df-sdom 8499  df-fin 8500  df-sup 8894  df-oi 8962  df-card 9356  df-pnf 10670  df-mnf 10671  df-xr 10672  df-ltxr 10673  df-le 10674  df-sub 10865  df-neg 10866  df-div 11291  df-nn 11630  df-2 11692  df-3 11693  df-n0 11890  df-z 11974  df-uz 12236  df-rp 12382  df-xadd 12500  df-ico 12736  df-icc 12737  df-fz 12890  df-fzo 13033  df-seq 13369  df-exp 13430  df-hash 13691  df-cj 14454  df-re 14455  df-im 14456  df-sqrt 14590  df-abs 14591  df-clim 14841  df-sum 15039  df-sumge0 42999 This theorem is referenced by:  isomennd  43167
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