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| Mirrors > Home > MPE Home > Th. List > Mathboxes > meaiunlelem | Structured version Visualization version GIF version | ||
| Description: The measure of the union of countable sets is less than or equal to the sum of the measures, Property 112C (d) of [Fremlin1] p. 16. (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
| Ref | Expression |
|---|---|
| meaiunlelem.1 | ⊢ Ⅎ𝑛𝜑 |
| meaiunlelem.m | ⊢ (𝜑 → 𝑀 ∈ Meas) |
| meaiunlelem.s | ⊢ 𝑆 = dom 𝑀 |
| meaiunlelem.z | ⊢ 𝑍 = (ℤ≥‘𝑁) |
| meaiunlelem.e | ⊢ (𝜑 → 𝐸:𝑍⟶𝑆) |
| meaiunlelem.f | ⊢ 𝐹 = (𝑛 ∈ 𝑍 ↦ ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖))) |
| Ref | Expression |
|---|---|
| meaiunlelem | ⊢ (𝜑 → (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛)) ≤ (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | meaiunlelem.1 | . . . . . . 7 ⊢ Ⅎ𝑛𝜑 | |
| 2 | meaiunlelem.z | . . . . . . 7 ⊢ 𝑍 = (ℤ≥‘𝑁) | |
| 3 | meaiunlelem.e | . . . . . . 7 ⊢ (𝜑 → 𝐸:𝑍⟶𝑆) | |
| 4 | meaiunlelem.f | . . . . . . 7 ⊢ 𝐹 = (𝑛 ∈ 𝑍 ↦ ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖))) | |
| 5 | 1, 2, 3, 4 | iundjiun 47206 | . . . . . 6 ⊢ (𝜑 → ((∀𝑥 ∈ 𝑍 ∪ 𝑛 ∈ (𝑁...𝑥)(𝐹‘𝑛) = ∪ 𝑛 ∈ (𝑁...𝑥)(𝐸‘𝑛) ∧ ∪ 𝑛 ∈ 𝑍 (𝐹‘𝑛) = ∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛)) ∧ Disj 𝑛 ∈ 𝑍 (𝐹‘𝑛))) |
| 6 | 5 | simplrd 782 | . . . . 5 ⊢ (𝜑 → ∪ 𝑛 ∈ 𝑍 (𝐹‘𝑛) = ∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛)) |
| 7 | 6 | eqcomd 2772 | . . . 4 ⊢ (𝜑 → ∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛) = ∪ 𝑛 ∈ 𝑍 (𝐹‘𝑛)) |
| 8 | 7 | fveq2d 6889 | . . 3 ⊢ (𝜑 → (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛)) = (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐹‘𝑛))) |
| 9 | meaiunlelem.m | . . . 4 ⊢ (𝜑 → 𝑀 ∈ Meas) | |
| 10 | meaiunlelem.s | . . . 4 ⊢ 𝑆 = dom 𝑀 | |
| 11 | 9, 10 | dmmeasal 47198 | . . . . . . . 8 ⊢ (𝜑 → 𝑆 ∈ SAlg) |
| 12 | 11 | adantr 486 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑆 ∈ SAlg) |
| 13 | 3 | ffvelcdmda 7083 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐸‘𝑛) ∈ 𝑆) |
| 14 | fzofi 14021 | . . . . . . . . . . 11 ⊢ (𝑁..^𝑛) ∈ Fin | |
| 15 | isfinite 9623 | . . . . . . . . . . . . 13 ⊢ ((𝑁..^𝑛) ∈ Fin ↔ (𝑁..^𝑛) ≺ ω) | |
| 16 | 15 | biimpi 219 | . . . . . . . . . . . 12 ⊢ ((𝑁..^𝑛) ∈ Fin → (𝑁..^𝑛) ≺ ω) |
| 17 | sdomdom 8979 | . . . . . . . . . . . 12 ⊢ ((𝑁..^𝑛) ≺ ω → (𝑁..^𝑛) ≼ ω) | |
| 18 | 16, 17 | syl 18 | . . . . . . . . . . 11 ⊢ ((𝑁..^𝑛) ∈ Fin → (𝑁..^𝑛) ≼ ω) |
| 19 | 14, 18 | ax-mp 5 | . . . . . . . . . 10 ⊢ (𝑁..^𝑛) ≼ ω |
| 20 | 19 | a1i 11 | . . . . . . . . 9 ⊢ (𝜑 → (𝑁..^𝑛) ≼ ω) |
| 21 | 3 | adantr 486 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ (𝑁..^𝑛)) → 𝐸:𝑍⟶𝑆) |
| 22 | elfzouz 13703 | . . . . . . . . . . . 12 ⊢ (𝑖 ∈ (𝑁..^𝑛) → 𝑖 ∈ (ℤ≥‘𝑁)) | |
| 23 | 2 | eqcomi 2775 | . . . . . . . . . . . 12 ⊢ (ℤ≥‘𝑁) = 𝑍 |
| 24 | 22, 23 | eleqtrdi 2876 | . . . . . . . . . . 11 ⊢ (𝑖 ∈ (𝑁..^𝑛) → 𝑖 ∈ 𝑍) |
| 25 | 24 | adantl 487 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ (𝑁..^𝑛)) → 𝑖 ∈ 𝑍) |
| 26 | 21, 25 | ffvelcdmd 7084 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ (𝑁..^𝑛)) → (𝐸‘𝑖) ∈ 𝑆) |
| 27 | 11, 20, 26 | saliuncl 47069 | . . . . . . . 8 ⊢ (𝜑 → ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖) ∈ 𝑆) |
| 28 | 27 | adantr 486 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖) ∈ 𝑆) |
| 29 | saldifcl2 47074 | . . . . . . 7 ⊢ ((𝑆 ∈ SAlg ∧ (𝐸‘𝑛) ∈ 𝑆 ∧ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖) ∈ 𝑆) → ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ∈ 𝑆) | |
| 30 | 12, 13, 28, 29 | syl3anc 1398 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ∈ 𝑆) |
| 31 | 1, 30, 4 | fmptdf 7116 | . . . . 5 ⊢ (𝜑 → 𝐹:𝑍⟶𝑆) |
| 32 | 31 | ffvelcdmda 7083 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐹‘𝑛) ∈ 𝑆) |
| 33 | eqid 2766 | . . . . . . 7 ⊢ (ℤ≥‘𝑁) = (ℤ≥‘𝑁) | |
| 34 | 33 | uzct 45815 | . . . . . 6 ⊢ (ℤ≥‘𝑁) ≼ ω |
| 35 | 2, 34 | eqbrtri 5135 | . . . . 5 ⊢ 𝑍 ≼ ω |
| 36 | 35 | a1i 11 | . . . 4 ⊢ (𝜑 → 𝑍 ≼ ω) |
| 37 | 5 | simprd 501 | . . . 4 ⊢ (𝜑 → Disj 𝑛 ∈ 𝑍 (𝐹‘𝑛)) |
| 38 | 1, 9, 10, 32, 36, 37 | meadjiun 47212 | . . 3 ⊢ (𝜑 → (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐹‘𝑛)) = (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛))))) |
| 39 | eqidd 2767 | . . 3 ⊢ (𝜑 → (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛)))) = (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛))))) | |
| 40 | 8, 38, 39 | 3eqtrd 2805 | . 2 ⊢ (𝜑 → (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛)) = (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛))))) |
| 41 | 2 | fvexi 6899 | . . . 4 ⊢ 𝑍 ∈ V |
| 42 | 41 | a1i 11 | . . 3 ⊢ (𝜑 → 𝑍 ∈ V) |
| 43 | 9 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑀 ∈ Meas) |
| 44 | 43, 10, 32 | meacl 47204 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝑀‘(𝐹‘𝑛)) ∈ (0[,]+∞)) |
| 45 | 43, 10, 13 | meacl 47204 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝑀‘(𝐸‘𝑛)) ∈ (0[,]+∞)) |
| 46 | simpr 490 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑛 ∈ 𝑍) | |
| 47 | 13 | difexd 5305 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ∈ V) |
| 48 | 4 | fvmpt2 7005 | . . . . . 6 ⊢ ((𝑛 ∈ 𝑍 ∧ ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ∈ V) → (𝐹‘𝑛) = ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖))) |
| 49 | 46, 47, 48 | syl2anc 596 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐹‘𝑛) = ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖))) |
| 50 | difssd 4094 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ⊆ (𝐸‘𝑛)) | |
| 51 | 49, 50 | eqsstrd 3974 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐹‘𝑛) ⊆ (𝐸‘𝑛)) |
| 52 | 43, 10, 32, 13, 51 | meassle 47209 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝑀‘(𝐹‘𝑛)) ≤ (𝑀‘(𝐸‘𝑛))) |
| 53 | 1, 42, 44, 45, 52 | sge0lempt 47156 | . 2 ⊢ (𝜑 → (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛)))) ≤ (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))))) |
| 54 | 40, 53 | eqbrtrd 5136 | 1 ⊢ (𝜑 → (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛)) ≤ (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 Ⅎwnf 1816 ∈ wcel 2146 ∀wral 3082 Vcvv 3458 ∖ cdif 3905 ∪ ciun 4959 Disj wdisj 5079 class class class wbr 5112 ↦ cmpt 5195 dom cdm 5664 ⟶wf 6536 ‘cfv 6540 (class class class)co 7416 ωcom 7864 ≼ cdom 8943 ≺ csdm 8944 Fincfn 8945 ≤ cle 11254 ℤ≥cuz 12872 ...cfz 13545 ..^cfzo 13693 SAlgcsalg 47054 Σ^csumge0 47108 Meascmea 47195 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5241 ax-sep 5260 ax-nul 5272 ax-pow 5339 ax-pr 5407 ax-un 7738 ax-inf2 9612 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 proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4491 df-pw 4567 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4876 df-int 4916 df-iun 4961 df-disj 5080 df-br 5113 df-opab 5177 df-mpt 5196 df-tr 5222 df-id 5559 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-se 5618 df-we 5619 df-xp 5670 df-rel 5671 df-cnv 5672 df-co 5673 df-dm 5674 df-rn 5675 df-res 5676 df-ima 5677 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7865 df-1st 7988 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-1o 8455 df-2o 8456 df-oadd 8459 df-omul 8460 df-er 8696 df-map 8828 df-en 8946 df-dom 8947 df-sdom 8948 df-fin 8949 df-sup 9404 df-oi 9474 df-card 9936 df-acn 9939 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11453 df-neg 11454 df-div 11882 df-nn 12244 df-2 12313 df-3 12314 df-n0 12515 df-z 12602 df-uz 12873 df-rp 13027 df-xadd 13148 df-ico 13388 df-icc 13389 df-fz 13546 df-fzo 13694 df-seq 14049 df-exp 14109 df-hash 14378 df-cj 15161 df-re 15162 df-im 15163 df-sqrt 15297 df-abs 15298 df-clim 15550 df-sum 15749 df-salg 47055 df-sumge0 47109 df-mea 47196 |
| This theorem is used by: meaiunle 47215 |
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