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Theorem volsup2 23279
Description: The volume of 𝐴 is the supremum of the sequence vol*‘(𝐴 ∩ (-𝑛[,]𝑛)) of volumes of bounded sets. (Contributed by Mario Carneiro, 30-Aug-2014.)
Assertion
Ref Expression
volsup2 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ∃𝑛 ∈ ℕ 𝐵 < (vol‘(𝐴 ∩ (-𝑛[,]𝑛))))
Distinct variable groups:   𝐴,𝑛   𝐵,𝑛

Proof of Theorem volsup2
Dummy variables 𝑚 𝑥 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simp3 1061 . . . . 5 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝐵 < (vol‘𝐴))
2 rexr 10029 . . . . . . 7 (𝐵 ∈ ℝ → 𝐵 ∈ ℝ*)
323ad2ant2 1081 . . . . . 6 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝐵 ∈ ℝ*)
4 iccssxr 12198 . . . . . . . 8 (0[,]+∞) ⊆ ℝ*
5 volf 23204 . . . . . . . . 9 vol:dom vol⟶(0[,]+∞)
65ffvelrni 6314 . . . . . . . 8 (𝐴 ∈ dom vol → (vol‘𝐴) ∈ (0[,]+∞))
74, 6sseldi 3581 . . . . . . 7 (𝐴 ∈ dom vol → (vol‘𝐴) ∈ ℝ*)
873ad2ant1 1080 . . . . . 6 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (vol‘𝐴) ∈ ℝ*)
9 xrltnle 10049 . . . . . 6 ((𝐵 ∈ ℝ* ∧ (vol‘𝐴) ∈ ℝ*) → (𝐵 < (vol‘𝐴) ↔ ¬ (vol‘𝐴) ≤ 𝐵))
103, 8, 9syl2anc 692 . . . . 5 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝐵 < (vol‘𝐴) ↔ ¬ (vol‘𝐴) ≤ 𝐵))
111, 10mpbid 222 . . . 4 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ¬ (vol‘𝐴) ≤ 𝐵)
12 negeq 10217 . . . . . . . . . . . . . 14 (𝑚 = 𝑛 → -𝑚 = -𝑛)
13 id 22 . . . . . . . . . . . . . 14 (𝑚 = 𝑛𝑚 = 𝑛)
1412, 13oveq12d 6622 . . . . . . . . . . . . 13 (𝑚 = 𝑛 → (-𝑚[,]𝑚) = (-𝑛[,]𝑛))
1514ineq2d 3792 . . . . . . . . . . . 12 (𝑚 = 𝑛 → (𝐴 ∩ (-𝑚[,]𝑚)) = (𝐴 ∩ (-𝑛[,]𝑛)))
16 eqid 2621 . . . . . . . . . . . 12 (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) = (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))
17 ovex 6632 . . . . . . . . . . . . 13 (-𝑛[,]𝑛) ∈ V
1817inex2 4760 . . . . . . . . . . . 12 (𝐴 ∩ (-𝑛[,]𝑛)) ∈ V
1915, 16, 18fvmpt 6239 . . . . . . . . . . 11 (𝑛 ∈ ℕ → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = (𝐴 ∩ (-𝑛[,]𝑛)))
2019iuneq2i 4505 . . . . . . . . . 10 𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = 𝑛 ∈ ℕ (𝐴 ∩ (-𝑛[,]𝑛))
21 iunin2 4550 . . . . . . . . . 10 𝑛 ∈ ℕ (𝐴 ∩ (-𝑛[,]𝑛)) = (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛))
2220, 21eqtri 2643 . . . . . . . . 9 𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛))
23 simpl1 1062 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → 𝐴 ∈ dom vol)
24 nnre 10971 . . . . . . . . . . . . . . . 16 (𝑛 ∈ ℕ → 𝑛 ∈ ℝ)
2524adantl 482 . . . . . . . . . . . . . . 15 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℝ)
2625renegcld 10401 . . . . . . . . . . . . . 14 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → -𝑛 ∈ ℝ)
27 iccmbl 23241 . . . . . . . . . . . . . 14 ((-𝑛 ∈ ℝ ∧ 𝑛 ∈ ℝ) → (-𝑛[,]𝑛) ∈ dom vol)
2826, 25, 27syl2anc 692 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (-𝑛[,]𝑛) ∈ dom vol)
29 inmbl 23217 . . . . . . . . . . . . 13 ((𝐴 ∈ dom vol ∧ (-𝑛[,]𝑛) ∈ dom vol) → (𝐴 ∩ (-𝑛[,]𝑛)) ∈ dom vol)
3023, 28, 29syl2anc 692 . . . . . . . . . . . 12 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝐴 ∩ (-𝑛[,]𝑛)) ∈ dom vol)
3115cbvmptv 4710 . . . . . . . . . . . 12 (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) = (𝑛 ∈ ℕ ↦ (𝐴 ∩ (-𝑛[,]𝑛)))
3230, 31fmptd 6340 . . . . . . . . . . 11 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))):ℕ⟶dom vol)
33 ffn 6002 . . . . . . . . . . 11 ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))):ℕ⟶dom vol → (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) Fn ℕ)
3432, 33syl 17 . . . . . . . . . 10 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) Fn ℕ)
35 fniunfv 6459 . . . . . . . . . 10 ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) Fn ℕ → 𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))))
3634, 35syl 17 . . . . . . . . 9 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))))
37 mblss 23206 . . . . . . . . . . . . . . . 16 (𝐴 ∈ dom vol → 𝐴 ⊆ ℝ)
38373ad2ant1 1080 . . . . . . . . . . . . . . 15 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝐴 ⊆ ℝ)
3938sselda 3583 . . . . . . . . . . . . . 14 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑥𝐴) → 𝑥 ∈ ℝ)
40 recn 9970 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ ℝ → 𝑥 ∈ ℂ)
4140abscld 14109 . . . . . . . . . . . . . . . 16 (𝑥 ∈ ℝ → (abs‘𝑥) ∈ ℝ)
42 arch 11233 . . . . . . . . . . . . . . . 16 ((abs‘𝑥) ∈ ℝ → ∃𝑛 ∈ ℕ (abs‘𝑥) < 𝑛)
4341, 42syl 17 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℝ → ∃𝑛 ∈ ℕ (abs‘𝑥) < 𝑛)
44 ltle 10070 . . . . . . . . . . . . . . . . . 18 (((abs‘𝑥) ∈ ℝ ∧ 𝑛 ∈ ℝ) → ((abs‘𝑥) < 𝑛 → (abs‘𝑥) ≤ 𝑛))
4541, 24, 44syl2an 494 . . . . . . . . . . . . . . . . 17 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((abs‘𝑥) < 𝑛 → (abs‘𝑥) ≤ 𝑛))
46 id 22 . . . . . . . . . . . . . . . . . . . 20 ((𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛) → (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛))
47463expib 1265 . . . . . . . . . . . . . . . . . . 19 (𝑥 ∈ ℝ → ((-𝑛𝑥𝑥𝑛) → (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛)))
4847adantr 481 . . . . . . . . . . . . . . . . . 18 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((-𝑛𝑥𝑥𝑛) → (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛)))
49 absle 13989 . . . . . . . . . . . . . . . . . . 19 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℝ) → ((abs‘𝑥) ≤ 𝑛 ↔ (-𝑛𝑥𝑥𝑛)))
5024, 49sylan2 491 . . . . . . . . . . . . . . . . . 18 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((abs‘𝑥) ≤ 𝑛 ↔ (-𝑛𝑥𝑥𝑛)))
5124adantl 482 . . . . . . . . . . . . . . . . . . . 20 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℝ)
5251renegcld 10401 . . . . . . . . . . . . . . . . . . 19 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → -𝑛 ∈ ℝ)
53 elicc2 12180 . . . . . . . . . . . . . . . . . . 19 ((-𝑛 ∈ ℝ ∧ 𝑛 ∈ ℝ) → (𝑥 ∈ (-𝑛[,]𝑛) ↔ (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛)))
5452, 51, 53syl2anc 692 . . . . . . . . . . . . . . . . . 18 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → (𝑥 ∈ (-𝑛[,]𝑛) ↔ (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛)))
5548, 50, 543imtr4d 283 . . . . . . . . . . . . . . . . 17 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((abs‘𝑥) ≤ 𝑛𝑥 ∈ (-𝑛[,]𝑛)))
5645, 55syld 47 . . . . . . . . . . . . . . . 16 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((abs‘𝑥) < 𝑛𝑥 ∈ (-𝑛[,]𝑛)))
5756reximdva 3011 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℝ → (∃𝑛 ∈ ℕ (abs‘𝑥) < 𝑛 → ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛)))
5843, 57mpd 15 . . . . . . . . . . . . . 14 (𝑥 ∈ ℝ → ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛))
5939, 58syl 17 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑥𝐴) → ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛))
6059ex 450 . . . . . . . . . . . 12 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝑥𝐴 → ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛)))
61 eliun 4490 . . . . . . . . . . . 12 (𝑥 𝑛 ∈ ℕ (-𝑛[,]𝑛) ↔ ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛))
6260, 61syl6ibr 242 . . . . . . . . . . 11 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝑥𝐴𝑥 𝑛 ∈ ℕ (-𝑛[,]𝑛)))
6362ssrdv 3589 . . . . . . . . . 10 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛))
64 df-ss 3569 . . . . . . . . . 10 (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛) ↔ (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛)) = 𝐴)
6563, 64sylib 208 . . . . . . . . 9 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛)) = 𝐴)
6622, 36, 653eqtr3a 2679 . . . . . . . 8 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) = 𝐴)
6766fveq2d 6152 . . . . . . 7 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (vol‘ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))) = (vol‘𝐴))
68 peano2re 10153 . . . . . . . . . . . . . 14 (𝑛 ∈ ℝ → (𝑛 + 1) ∈ ℝ)
6925, 68syl 17 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝑛 + 1) ∈ ℝ)
7069renegcld 10401 . . . . . . . . . . . 12 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → -(𝑛 + 1) ∈ ℝ)
7125lep1d 10899 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → 𝑛 ≤ (𝑛 + 1))
7225, 69lenegd 10550 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝑛 ≤ (𝑛 + 1) ↔ -(𝑛 + 1) ≤ -𝑛))
7371, 72mpbid 222 . . . . . . . . . . . 12 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → -(𝑛 + 1) ≤ -𝑛)
74 iccss 12183 . . . . . . . . . . . 12 (((-(𝑛 + 1) ∈ ℝ ∧ (𝑛 + 1) ∈ ℝ) ∧ (-(𝑛 + 1) ≤ -𝑛𝑛 ≤ (𝑛 + 1))) → (-𝑛[,]𝑛) ⊆ (-(𝑛 + 1)[,](𝑛 + 1)))
7570, 69, 73, 71, 74syl22anc 1324 . . . . . . . . . . 11 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (-𝑛[,]𝑛) ⊆ (-(𝑛 + 1)[,](𝑛 + 1)))
76 sslin 3817 . . . . . . . . . . 11 ((-𝑛[,]𝑛) ⊆ (-(𝑛 + 1)[,](𝑛 + 1)) → (𝐴 ∩ (-𝑛[,]𝑛)) ⊆ (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
7775, 76syl 17 . . . . . . . . . 10 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝐴 ∩ (-𝑛[,]𝑛)) ⊆ (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
7819adantl 482 . . . . . . . . . 10 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = (𝐴 ∩ (-𝑛[,]𝑛)))
79 peano2nn 10976 . . . . . . . . . . . 12 (𝑛 ∈ ℕ → (𝑛 + 1) ∈ ℕ)
8079adantl 482 . . . . . . . . . . 11 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝑛 + 1) ∈ ℕ)
81 negeq 10217 . . . . . . . . . . . . . 14 (𝑚 = (𝑛 + 1) → -𝑚 = -(𝑛 + 1))
82 id 22 . . . . . . . . . . . . . 14 (𝑚 = (𝑛 + 1) → 𝑚 = (𝑛 + 1))
8381, 82oveq12d 6622 . . . . . . . . . . . . 13 (𝑚 = (𝑛 + 1) → (-𝑚[,]𝑚) = (-(𝑛 + 1)[,](𝑛 + 1)))
8483ineq2d 3792 . . . . . . . . . . . 12 (𝑚 = (𝑛 + 1) → (𝐴 ∩ (-𝑚[,]𝑚)) = (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
85 ovex 6632 . . . . . . . . . . . . 13 (-(𝑛 + 1)[,](𝑛 + 1)) ∈ V
8685inex2 4760 . . . . . . . . . . . 12 (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))) ∈ V
8784, 16, 86fvmpt 6239 . . . . . . . . . . 11 ((𝑛 + 1) ∈ ℕ → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘(𝑛 + 1)) = (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
8880, 87syl 17 . . . . . . . . . 10 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘(𝑛 + 1)) = (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
8977, 78, 883sstr4d 3627 . . . . . . . . 9 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) ⊆ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘(𝑛 + 1)))
9089ralrimiva 2960 . . . . . . . 8 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ∀𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) ⊆ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘(𝑛 + 1)))
91 volsup 23231 . . . . . . . 8 (((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))):ℕ⟶dom vol ∧ ∀𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) ⊆ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘(𝑛 + 1))) → (vol‘ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))) = sup((vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))), ℝ*, < ))
9232, 90, 91syl2anc 692 . . . . . . 7 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (vol‘ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))) = sup((vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))), ℝ*, < ))
9367, 92eqtr3d 2657 . . . . . 6 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (vol‘𝐴) = sup((vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))), ℝ*, < ))
9493breq1d 4623 . . . . 5 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ((vol‘𝐴) ≤ 𝐵 ↔ sup((vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))), ℝ*, < ) ≤ 𝐵))
95 imassrn 5436 . . . . . . 7 (vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))) ⊆ ran vol
96 frn 6010 . . . . . . . . 9 (vol:dom vol⟶(0[,]+∞) → ran vol ⊆ (0[,]+∞))
975, 96ax-mp 5 . . . . . . . 8 ran vol ⊆ (0[,]+∞)
9897, 4sstri 3592 . . . . . . 7 ran vol ⊆ ℝ*
9995, 98sstri 3592 . . . . . 6 (vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))) ⊆ ℝ*
100 supxrleub 12099 . . . . . 6 (((vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))) ⊆ ℝ*𝐵 ∈ ℝ*) → (sup((vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))), ℝ*, < ) ≤ 𝐵 ↔ ∀𝑛 ∈ (vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))))𝑛𝐵))
10199, 3, 100sylancr 694 . . . . 5 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (sup((vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))), ℝ*, < ) ≤ 𝐵 ↔ ∀𝑛 ∈ (vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))))𝑛𝐵))
102 ffn 6002 . . . . . . . 8 (vol:dom vol⟶(0[,]+∞) → vol Fn dom vol)
1035, 102ax-mp 5 . . . . . . 7 vol Fn dom vol
104 frn 6010 . . . . . . . 8 ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))):ℕ⟶dom vol → ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) ⊆ dom vol)
10532, 104syl 17 . . . . . . 7 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) ⊆ dom vol)
106 breq1 4616 . . . . . . . 8 (𝑛 = (vol‘𝑧) → (𝑛𝐵 ↔ (vol‘𝑧) ≤ 𝐵))
107106ralima 6452 . . . . . . 7 ((vol Fn dom vol ∧ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) ⊆ dom vol) → (∀𝑛 ∈ (vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))))𝑛𝐵 ↔ ∀𝑧 ∈ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))(vol‘𝑧) ≤ 𝐵))
108103, 105, 107sylancr 694 . . . . . 6 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (∀𝑛 ∈ (vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))))𝑛𝐵 ↔ ∀𝑧 ∈ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))(vol‘𝑧) ≤ 𝐵))
109 fveq2 6148 . . . . . . . . . 10 (𝑧 = ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) → (vol‘𝑧) = (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)))
110109breq1d 4623 . . . . . . . . 9 (𝑧 = ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) → ((vol‘𝑧) ≤ 𝐵 ↔ (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) ≤ 𝐵))
111110ralrn 6318 . . . . . . . 8 ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) Fn ℕ → (∀𝑧 ∈ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))(vol‘𝑧) ≤ 𝐵 ↔ ∀𝑛 ∈ ℕ (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) ≤ 𝐵))
11234, 111syl 17 . . . . . . 7 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (∀𝑧 ∈ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))(vol‘𝑧) ≤ 𝐵 ↔ ∀𝑛 ∈ ℕ (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) ≤ 𝐵))
11319fveq2d 6152 . . . . . . . . 9 (𝑛 ∈ ℕ → (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) = (vol‘(𝐴 ∩ (-𝑛[,]𝑛))))
114113breq1d 4623 . . . . . . . 8 (𝑛 ∈ ℕ → ((vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) ≤ 𝐵 ↔ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
115114ralbiia 2973 . . . . . . 7 (∀𝑛 ∈ ℕ (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) ≤ 𝐵 ↔ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵)
116112, 115syl6bb 276 . . . . . 6 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (∀𝑧 ∈ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))(vol‘𝑧) ≤ 𝐵 ↔ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
117108, 116bitrd 268 . . . . 5 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (∀𝑛 ∈ (vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))))𝑛𝐵 ↔ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
11894, 101, 1173bitrd 294 . . . 4 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ((vol‘𝐴) ≤ 𝐵 ↔ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
11911, 118mtbid 314 . . 3 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ¬ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵)
120 rexnal 2989 . . 3 (∃𝑛 ∈ ℕ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵 ↔ ¬ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵)
121119, 120sylibr 224 . 2 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ∃𝑛 ∈ ℕ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵)
1223adantr 481 . . . 4 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → 𝐵 ∈ ℝ*)
1235ffvelrni 6314 . . . . . 6 ((𝐴 ∩ (-𝑛[,]𝑛)) ∈ dom vol → (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ∈ (0[,]+∞))
1244, 123sseldi 3581 . . . . 5 ((𝐴 ∩ (-𝑛[,]𝑛)) ∈ dom vol → (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ∈ ℝ*)
12530, 124syl 17 . . . 4 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ∈ ℝ*)
126 xrltnle 10049 . . . 4 ((𝐵 ∈ ℝ* ∧ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ∈ ℝ*) → (𝐵 < (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ↔ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
127122, 125, 126syl2anc 692 . . 3 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝐵 < (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ↔ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
128127rexbidva 3042 . 2 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (∃𝑛 ∈ ℕ 𝐵 < (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ↔ ∃𝑛 ∈ ℕ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
129121, 128mpbird 247 1 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ∃𝑛 ∈ ℕ 𝐵 < (vol‘(𝐴 ∩ (-𝑛[,]𝑛))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 384  w3a 1036   = wceq 1480  wcel 1987  wral 2907  wrex 2908  cin 3554  wss 3555   cuni 4402   ciun 4485   class class class wbr 4613  cmpt 4673  dom cdm 5074  ran crn 5075  cima 5077   Fn wfn 5842  wf 5843  cfv 5847  (class class class)co 6604  supcsup 8290  cr 9879  0cc0 9880  1c1 9881   + caddc 9883  +∞cpnf 10015  *cxr 10017   < clt 10018  cle 10019  -cneg 10211  cn 10964  [,]cicc 12120  abscabs 13908  volcvol 23139
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4731  ax-sep 4741  ax-nul 4749  ax-pow 4803  ax-pr 4867  ax-un 6902  ax-inf2 8482  ax-cc 9201  ax-cnex 9936  ax-resscn 9937  ax-1cn 9938  ax-icn 9939  ax-addcl 9940  ax-addrcl 9941  ax-mulcl 9942  ax-mulrcl 9943  ax-mulcom 9944  ax-addass 9945  ax-mulass 9946  ax-distr 9947  ax-i2m1 9948  ax-1ne0 9949  ax-1rid 9950  ax-rnegex 9951  ax-rrecex 9952  ax-cnre 9953  ax-pre-lttri 9954  ax-pre-lttrn 9955  ax-pre-ltadd 9956  ax-pre-mulgt0 9957  ax-pre-sup 9958
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-fal 1486  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-nel 2894  df-ral 2912  df-rex 2913  df-reu 2914  df-rmo 2915  df-rab 2916  df-v 3188  df-sbc 3418  df-csb 3515  df-dif 3558  df-un 3560  df-in 3562  df-ss 3569  df-pss 3571  df-nul 3892  df-if 4059  df-pw 4132  df-sn 4149  df-pr 4151  df-tp 4153  df-op 4155  df-uni 4403  df-int 4441  df-iun 4487  df-disj 4584  df-br 4614  df-opab 4674  df-mpt 4675  df-tr 4713  df-eprel 4985  df-id 4989  df-po 4995  df-so 4996  df-fr 5033  df-se 5034  df-we 5035  df-xp 5080  df-rel 5081  df-cnv 5082  df-co 5083  df-dm 5084  df-rn 5085  df-res 5086  df-ima 5087  df-pred 5639  df-ord 5685  df-on 5686  df-lim 5687  df-suc 5688  df-iota 5810  df-fun 5849  df-fn 5850  df-f 5851  df-f1 5852  df-fo 5853  df-f1o 5854  df-fv 5855  df-isom 5856  df-riota 6565  df-ov 6607  df-oprab 6608  df-mpt2 6609  df-of 6850  df-om 7013  df-1st 7113  df-2nd 7114  df-wrecs 7352  df-recs 7413  df-rdg 7451  df-1o 7505  df-2o 7506  df-oadd 7509  df-er 7687  df-map 7804  df-pm 7805  df-en 7900  df-dom 7901  df-sdom 7902  df-fin 7903  df-sup 8292  df-inf 8293  df-oi 8359  df-card 8709  df-cda 8934  df-pnf 10020  df-mnf 10021  df-xr 10022  df-ltxr 10023  df-le 10024  df-sub 10212  df-neg 10213  df-div 10629  df-nn 10965  df-2 11023  df-3 11024  df-n0 11237  df-z 11322  df-uz 11632  df-q 11733  df-rp 11777  df-xadd 11891  df-ioo 12121  df-ico 12123  df-icc 12124  df-fz 12269  df-fzo 12407  df-fl 12533  df-seq 12742  df-exp 12801  df-hash 13058  df-cj 13773  df-re 13774  df-im 13775  df-sqrt 13909  df-abs 13910  df-clim 14153  df-rlim 14154  df-sum 14351  df-xmet 19658  df-met 19659  df-ovol 23140  df-vol 23141
This theorem is referenced by:  volivth  23281
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