MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  volsup2 Structured version   Visualization version   GIF version

Theorem volsup2 25122
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 1139 . . . . 5 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝐵 < (vol‘𝐴))
2 rexr 11260 . . . . . . 7 (𝐵 ∈ ℝ → 𝐵 ∈ ℝ*)
323ad2ant2 1135 . . . . . 6 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝐵 ∈ ℝ*)
4 iccssxr 13407 . . . . . . . 8 (0[,]+∞) ⊆ ℝ*
5 volf 25046 . . . . . . . . 9 vol:dom vol⟶(0[,]+∞)
65ffvelcdmi 7086 . . . . . . . 8 (𝐴 ∈ dom vol → (vol‘𝐴) ∈ (0[,]+∞))
74, 6sselid 3981 . . . . . . 7 (𝐴 ∈ dom vol → (vol‘𝐴) ∈ ℝ*)
873ad2ant1 1134 . . . . . 6 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (vol‘𝐴) ∈ ℝ*)
9 xrltnle 11281 . . . . . 6 ((𝐵 ∈ ℝ* ∧ (vol‘𝐴) ∈ ℝ*) → (𝐵 < (vol‘𝐴) ↔ ¬ (vol‘𝐴) ≤ 𝐵))
103, 8, 9syl2anc 585 . . . . 5 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝐵 < (vol‘𝐴) ↔ ¬ (vol‘𝐴) ≤ 𝐵))
111, 10mpbid 231 . . . 4 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ¬ (vol‘𝐴) ≤ 𝐵)
12 negeq 11452 . . . . . . . . . . . . . 14 (𝑚 = 𝑛 → -𝑚 = -𝑛)
13 id 22 . . . . . . . . . . . . . 14 (𝑚 = 𝑛𝑚 = 𝑛)
1412, 13oveq12d 7427 . . . . . . . . . . . . 13 (𝑚 = 𝑛 → (-𝑚[,]𝑚) = (-𝑛[,]𝑛))
1514ineq2d 4213 . . . . . . . . . . . 12 (𝑚 = 𝑛 → (𝐴 ∩ (-𝑚[,]𝑚)) = (𝐴 ∩ (-𝑛[,]𝑛)))
16 eqid 2733 . . . . . . . . . . . 12 (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) = (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))
17 ovex 7442 . . . . . . . . . . . . 13 (-𝑛[,]𝑛) ∈ V
1817inex2 5319 . . . . . . . . . . . 12 (𝐴 ∩ (-𝑛[,]𝑛)) ∈ V
1915, 16, 18fvmpt 6999 . . . . . . . . . . 11 (𝑛 ∈ ℕ → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = (𝐴 ∩ (-𝑛[,]𝑛)))
2019iuneq2i 5019 . . . . . . . . . 10 𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = 𝑛 ∈ ℕ (𝐴 ∩ (-𝑛[,]𝑛))
21 iunin2 5075 . . . . . . . . . 10 𝑛 ∈ ℕ (𝐴 ∩ (-𝑛[,]𝑛)) = (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛))
2220, 21eqtri 2761 . . . . . . . . 9 𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛))
23 simpl1 1192 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → 𝐴 ∈ dom vol)
24 nnre 12219 . . . . . . . . . . . . . . . 16 (𝑛 ∈ ℕ → 𝑛 ∈ ℝ)
2524adantl 483 . . . . . . . . . . . . . . 15 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℝ)
2625renegcld 11641 . . . . . . . . . . . . . 14 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → -𝑛 ∈ ℝ)
27 iccmbl 25083 . . . . . . . . . . . . . 14 ((-𝑛 ∈ ℝ ∧ 𝑛 ∈ ℝ) → (-𝑛[,]𝑛) ∈ dom vol)
2826, 25, 27syl2anc 585 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (-𝑛[,]𝑛) ∈ dom vol)
29 inmbl 25059 . . . . . . . . . . . . 13 ((𝐴 ∈ dom vol ∧ (-𝑛[,]𝑛) ∈ dom vol) → (𝐴 ∩ (-𝑛[,]𝑛)) ∈ dom vol)
3023, 28, 29syl2anc 585 . . . . . . . . . . . 12 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝐴 ∩ (-𝑛[,]𝑛)) ∈ dom vol)
3115cbvmptv 5262 . . . . . . . . . . . 12 (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) = (𝑛 ∈ ℕ ↦ (𝐴 ∩ (-𝑛[,]𝑛)))
3230, 31fmptd 7114 . . . . . . . . . . 11 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))):ℕ⟶dom vol)
3332ffnd 6719 . . . . . . . . . 10 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) Fn ℕ)
34 fniunfv 7246 . . . . . . . . . 10 ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) Fn ℕ → 𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))))
3533, 34syl 17 . . . . . . . . 9 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))))
36 mblss 25048 . . . . . . . . . . . . . . . 16 (𝐴 ∈ dom vol → 𝐴 ⊆ ℝ)
37363ad2ant1 1134 . . . . . . . . . . . . . . 15 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝐴 ⊆ ℝ)
3837sselda 3983 . . . . . . . . . . . . . 14 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑥𝐴) → 𝑥 ∈ ℝ)
39 recn 11200 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ ℝ → 𝑥 ∈ ℂ)
4039abscld 15383 . . . . . . . . . . . . . . . 16 (𝑥 ∈ ℝ → (abs‘𝑥) ∈ ℝ)
41 arch 12469 . . . . . . . . . . . . . . . 16 ((abs‘𝑥) ∈ ℝ → ∃𝑛 ∈ ℕ (abs‘𝑥) < 𝑛)
4240, 41syl 17 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℝ → ∃𝑛 ∈ ℕ (abs‘𝑥) < 𝑛)
43 ltle 11302 . . . . . . . . . . . . . . . . . 18 (((abs‘𝑥) ∈ ℝ ∧ 𝑛 ∈ ℝ) → ((abs‘𝑥) < 𝑛 → (abs‘𝑥) ≤ 𝑛))
4440, 24, 43syl2an 597 . . . . . . . . . . . . . . . . 17 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((abs‘𝑥) < 𝑛 → (abs‘𝑥) ≤ 𝑛))
45 id 22 . . . . . . . . . . . . . . . . . . . 20 ((𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛) → (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛))
46453expib 1123 . . . . . . . . . . . . . . . . . . 19 (𝑥 ∈ ℝ → ((-𝑛𝑥𝑥𝑛) → (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛)))
4746adantr 482 . . . . . . . . . . . . . . . . . 18 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((-𝑛𝑥𝑥𝑛) → (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛)))
48 absle 15262 . . . . . . . . . . . . . . . . . . 19 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℝ) → ((abs‘𝑥) ≤ 𝑛 ↔ (-𝑛𝑥𝑥𝑛)))
4924, 48sylan2 594 . . . . . . . . . . . . . . . . . 18 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((abs‘𝑥) ≤ 𝑛 ↔ (-𝑛𝑥𝑥𝑛)))
5024adantl 483 . . . . . . . . . . . . . . . . . . . 20 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℝ)
5150renegcld 11641 . . . . . . . . . . . . . . . . . . 19 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → -𝑛 ∈ ℝ)
52 elicc2 13389 . . . . . . . . . . . . . . . . . . 19 ((-𝑛 ∈ ℝ ∧ 𝑛 ∈ ℝ) → (𝑥 ∈ (-𝑛[,]𝑛) ↔ (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛)))
5351, 50, 52syl2anc 585 . . . . . . . . . . . . . . . . . 18 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → (𝑥 ∈ (-𝑛[,]𝑛) ↔ (𝑥 ∈ ℝ ∧ -𝑛𝑥𝑥𝑛)))
5447, 49, 533imtr4d 294 . . . . . . . . . . . . . . . . 17 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((abs‘𝑥) ≤ 𝑛𝑥 ∈ (-𝑛[,]𝑛)))
5544, 54syld 47 . . . . . . . . . . . . . . . 16 ((𝑥 ∈ ℝ ∧ 𝑛 ∈ ℕ) → ((abs‘𝑥) < 𝑛𝑥 ∈ (-𝑛[,]𝑛)))
5655reximdva 3169 . . . . . . . . . . . . . . 15 (𝑥 ∈ ℝ → (∃𝑛 ∈ ℕ (abs‘𝑥) < 𝑛 → ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛)))
5742, 56mpd 15 . . . . . . . . . . . . . 14 (𝑥 ∈ ℝ → ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛))
5838, 57syl 17 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑥𝐴) → ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛))
5958ex 414 . . . . . . . . . . . 12 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝑥𝐴 → ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛)))
60 eliun 5002 . . . . . . . . . . . 12 (𝑥 𝑛 ∈ ℕ (-𝑛[,]𝑛) ↔ ∃𝑛 ∈ ℕ 𝑥 ∈ (-𝑛[,]𝑛))
6159, 60imbitrrdi 251 . . . . . . . . . . 11 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝑥𝐴𝑥 𝑛 ∈ ℕ (-𝑛[,]𝑛)))
6261ssrdv 3989 . . . . . . . . . 10 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → 𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛))
63 df-ss 3966 . . . . . . . . . 10 (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛) ↔ (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛)) = 𝐴)
6462, 63sylib 217 . . . . . . . . 9 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (𝐴 𝑛 ∈ ℕ (-𝑛[,]𝑛)) = 𝐴)
6522, 35, 643eqtr3a 2797 . . . . . . . 8 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) = 𝐴)
6665fveq2d 6896 . . . . . . 7 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (vol‘ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))) = (vol‘𝐴))
67 peano2re 11387 . . . . . . . . . . . . . 14 (𝑛 ∈ ℝ → (𝑛 + 1) ∈ ℝ)
6825, 67syl 17 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝑛 + 1) ∈ ℝ)
6968renegcld 11641 . . . . . . . . . . . 12 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → -(𝑛 + 1) ∈ ℝ)
7025lep1d 12145 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → 𝑛 ≤ (𝑛 + 1))
7125, 68lenegd 11793 . . . . . . . . . . . . 13 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝑛 ≤ (𝑛 + 1) ↔ -(𝑛 + 1) ≤ -𝑛))
7270, 71mpbid 231 . . . . . . . . . . . 12 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → -(𝑛 + 1) ≤ -𝑛)
73 iccss 13392 . . . . . . . . . . . 12 (((-(𝑛 + 1) ∈ ℝ ∧ (𝑛 + 1) ∈ ℝ) ∧ (-(𝑛 + 1) ≤ -𝑛𝑛 ≤ (𝑛 + 1))) → (-𝑛[,]𝑛) ⊆ (-(𝑛 + 1)[,](𝑛 + 1)))
7469, 68, 72, 70, 73syl22anc 838 . . . . . . . . . . 11 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (-𝑛[,]𝑛) ⊆ (-(𝑛 + 1)[,](𝑛 + 1)))
75 sslin 4235 . . . . . . . . . . 11 ((-𝑛[,]𝑛) ⊆ (-(𝑛 + 1)[,](𝑛 + 1)) → (𝐴 ∩ (-𝑛[,]𝑛)) ⊆ (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
7674, 75syl 17 . . . . . . . . . 10 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝐴 ∩ (-𝑛[,]𝑛)) ⊆ (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
7719adantl 483 . . . . . . . . . 10 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) = (𝐴 ∩ (-𝑛[,]𝑛)))
78 peano2nn 12224 . . . . . . . . . . . 12 (𝑛 ∈ ℕ → (𝑛 + 1) ∈ ℕ)
7978adantl 483 . . . . . . . . . . 11 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝑛 + 1) ∈ ℕ)
80 negeq 11452 . . . . . . . . . . . . . 14 (𝑚 = (𝑛 + 1) → -𝑚 = -(𝑛 + 1))
81 id 22 . . . . . . . . . . . . . 14 (𝑚 = (𝑛 + 1) → 𝑚 = (𝑛 + 1))
8280, 81oveq12d 7427 . . . . . . . . . . . . 13 (𝑚 = (𝑛 + 1) → (-𝑚[,]𝑚) = (-(𝑛 + 1)[,](𝑛 + 1)))
8382ineq2d 4213 . . . . . . . . . . . 12 (𝑚 = (𝑛 + 1) → (𝐴 ∩ (-𝑚[,]𝑚)) = (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
84 ovex 7442 . . . . . . . . . . . . 13 (-(𝑛 + 1)[,](𝑛 + 1)) ∈ V
8584inex2 5319 . . . . . . . . . . . 12 (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))) ∈ V
8683, 16, 85fvmpt 6999 . . . . . . . . . . 11 ((𝑛 + 1) ∈ ℕ → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘(𝑛 + 1)) = (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
8779, 86syl 17 . . . . . . . . . 10 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘(𝑛 + 1)) = (𝐴 ∩ (-(𝑛 + 1)[,](𝑛 + 1))))
8876, 77, 873sstr4d 4030 . . . . . . . . 9 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) ⊆ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘(𝑛 + 1)))
8988ralrimiva 3147 . . . . . . . 8 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ∀𝑛 ∈ ℕ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) ⊆ ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘(𝑛 + 1)))
90 volsup 25073 . . . . . . . 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*, < ))
9132, 89, 90syl2anc 585 . . . . . . 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*, < ))
9266, 91eqtr3d 2775 . . . . . 6 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (vol‘𝐴) = sup((vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))), ℝ*, < ))
9392breq1d 5159 . . . . 5 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ((vol‘𝐴) ≤ 𝐵 ↔ sup((vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))), ℝ*, < ) ≤ 𝐵))
94 imassrn 6071 . . . . . . 7 (vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))) ⊆ ran vol
95 frn 6725 . . . . . . . . 9 (vol:dom vol⟶(0[,]+∞) → ran vol ⊆ (0[,]+∞))
965, 95ax-mp 5 . . . . . . . 8 ran vol ⊆ (0[,]+∞)
9796, 4sstri 3992 . . . . . . 7 ran vol ⊆ ℝ*
9894, 97sstri 3992 . . . . . 6 (vol “ ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))) ⊆ ℝ*
99 supxrleub 13305 . . . . . 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))
10098, 3, 99sylancr 588 . . . . 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))
101 ffn 6718 . . . . . . . 8 (vol:dom vol⟶(0[,]+∞) → vol Fn dom vol)
1025, 101ax-mp 5 . . . . . . 7 vol Fn dom vol
10332frnd 6726 . . . . . . 7 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ran (𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚))) ⊆ dom vol)
104 breq1 5152 . . . . . . . 8 (𝑛 = (vol‘𝑧) → (𝑛𝐵 ↔ (vol‘𝑧) ≤ 𝐵))
105104ralima 7240 . . . . . . 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))
106102, 103, 105sylancr 588 . . . . . 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))
107 fveq2 6892 . . . . . . . . . 10 (𝑧 = ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) → (vol‘𝑧) = (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)))
108107breq1d 5159 . . . . . . . . 9 (𝑧 = ((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛) → ((vol‘𝑧) ≤ 𝐵 ↔ (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) ≤ 𝐵))
109108ralrn 7090 . . . . . . . 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))
11033, 109syl 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))
11119fveq2d 6896 . . . . . . . . 9 (𝑛 ∈ ℕ → (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) = (vol‘(𝐴 ∩ (-𝑛[,]𝑛))))
112111breq1d 5159 . . . . . . . 8 (𝑛 ∈ ℕ → ((vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) ≤ 𝐵 ↔ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
113112ralbiia 3092 . . . . . . 7 (∀𝑛 ∈ ℕ (vol‘((𝑚 ∈ ℕ ↦ (𝐴 ∩ (-𝑚[,]𝑚)))‘𝑛)) ≤ 𝐵 ↔ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵)
114110, 113bitrdi 287 . . . . . 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))
115106, 114bitrd 279 . . . . 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))
11693, 100, 1153bitrd 305 . . . 4 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ((vol‘𝐴) ≤ 𝐵 ↔ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
11711, 116mtbid 324 . . 3 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ¬ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵)
118 rexnal 3101 . . 3 (∃𝑛 ∈ ℕ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵 ↔ ¬ ∀𝑛 ∈ ℕ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵)
119117, 118sylibr 233 . 2 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → ∃𝑛 ∈ ℕ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵)
1203adantr 482 . . . 4 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → 𝐵 ∈ ℝ*)
1215ffvelcdmi 7086 . . . . . 6 ((𝐴 ∩ (-𝑛[,]𝑛)) ∈ dom vol → (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ∈ (0[,]+∞))
1224, 121sselid 3981 . . . . 5 ((𝐴 ∩ (-𝑛[,]𝑛)) ∈ dom vol → (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ∈ ℝ*)
12330, 122syl 17 . . . 4 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ∈ ℝ*)
124 xrltnle 11281 . . . 4 ((𝐵 ∈ ℝ* ∧ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ∈ ℝ*) → (𝐵 < (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ↔ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
125120, 123, 124syl2anc 585 . . 3 (((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) ∧ 𝑛 ∈ ℕ) → (𝐵 < (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ↔ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
126125rexbidva 3177 . 2 ((𝐴 ∈ dom vol ∧ 𝐵 ∈ ℝ ∧ 𝐵 < (vol‘𝐴)) → (∃𝑛 ∈ ℕ 𝐵 < (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ↔ ∃𝑛 ∈ ℕ ¬ (vol‘(𝐴 ∩ (-𝑛[,]𝑛))) ≤ 𝐵))
127119, 126mpbird 257 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 205  wa 397  w3a 1088   = wceq 1542  wcel 2107  wral 3062  wrex 3071  cin 3948  wss 3949   cuni 4909   ciun 4998   class class class wbr 5149  cmpt 5232  dom cdm 5677  ran crn 5678  cima 5680   Fn wfn 6539  wf 6540  cfv 6544  (class class class)co 7409  supcsup 9435  cr 11109  0cc0 11110  1c1 11111   + caddc 11113  +∞cpnf 11245  *cxr 11247   < clt 11248  cle 11249  -cneg 11445  cn 12212  [,]cicc 13327  abscabs 15181  volcvol 24980
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2704  ax-rep 5286  ax-sep 5300  ax-nul 5307  ax-pow 5364  ax-pr 5428  ax-un 7725  ax-inf2 9636  ax-cc 10430  ax-cnex 11166  ax-resscn 11167  ax-1cn 11168  ax-icn 11169  ax-addcl 11170  ax-addrcl 11171  ax-mulcl 11172  ax-mulrcl 11173  ax-mulcom 11174  ax-addass 11175  ax-mulass 11176  ax-distr 11177  ax-i2m1 11178  ax-1ne0 11179  ax-1rid 11180  ax-rnegex 11181  ax-rrecex 11182  ax-cnre 11183  ax-pre-lttri 11184  ax-pre-lttrn 11185  ax-pre-ltadd 11186  ax-pre-mulgt0 11187  ax-pre-sup 11188
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3or 1089  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-nf 1787  df-sb 2069  df-mo 2535  df-eu 2564  df-clab 2711  df-cleq 2725  df-clel 2811  df-nfc 2886  df-ne 2942  df-nel 3048  df-ral 3063  df-rex 3072  df-rmo 3377  df-reu 3378  df-rab 3434  df-v 3477  df-sbc 3779  df-csb 3895  df-dif 3952  df-un 3954  df-in 3956  df-ss 3966  df-pss 3968  df-nul 4324  df-if 4530  df-pw 4605  df-sn 4630  df-pr 4632  df-op 4636  df-uni 4910  df-int 4952  df-iun 5000  df-disj 5115  df-br 5150  df-opab 5212  df-mpt 5233  df-tr 5267  df-id 5575  df-eprel 5581  df-po 5589  df-so 5590  df-fr 5632  df-se 5633  df-we 5634  df-xp 5683  df-rel 5684  df-cnv 5685  df-co 5686  df-dm 5687  df-rn 5688  df-res 5689  df-ima 5690  df-pred 6301  df-ord 6368  df-on 6369  df-lim 6370  df-suc 6371  df-iota 6496  df-fun 6546  df-fn 6547  df-f 6548  df-f1 6549  df-fo 6550  df-f1o 6551  df-fv 6552  df-isom 6553  df-riota 7365  df-ov 7412  df-oprab 7413  df-mpo 7414  df-of 7670  df-om 7856  df-1st 7975  df-2nd 7976  df-frecs 8266  df-wrecs 8297  df-recs 8371  df-rdg 8410  df-1o 8466  df-2o 8467  df-er 8703  df-map 8822  df-pm 8823  df-en 8940  df-dom 8941  df-sdom 8942  df-fin 8943  df-sup 9437  df-inf 9438  df-oi 9505  df-dju 9896  df-card 9934  df-pnf 11250  df-mnf 11251  df-xr 11252  df-ltxr 11253  df-le 11254  df-sub 11446  df-neg 11447  df-div 11872  df-nn 12213  df-2 12275  df-3 12276  df-n0 12473  df-z 12559  df-uz 12823  df-q 12933  df-rp 12975  df-xadd 13093  df-ioo 13328  df-ico 13330  df-icc 13331  df-fz 13485  df-fzo 13628  df-fl 13757  df-seq 13967  df-exp 14028  df-hash 14291  df-cj 15046  df-re 15047  df-im 15048  df-sqrt 15182  df-abs 15183  df-clim 15432  df-rlim 15433  df-sum 15633  df-xmet 20937  df-met 20938  df-ovol 24981  df-vol 24982
This theorem is referenced by:  volivth  25124
  Copyright terms: Public domain W3C validator