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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 47275 | . . . . . 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 2768 | . . . 4 ⊢ (𝜑 → ∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛) = ∪ 𝑛 ∈ 𝑍 (𝐹‘𝑛)) |
| 8 | 7 | fveq2d 6886 | . . 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 47267 | . . . . . . . 8 ⊢ (𝜑 → 𝑆 ∈ SAlg) |
| 12 | 11 | adantr 486 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑆 ∈ SAlg) |
| 13 | 3 | ffvelcdmda 7080 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐸‘𝑛) ∈ 𝑆) |
| 14 | fzofi 14040 | . . . . . . . . . . 11 ⊢ (𝑁..^𝑛) ∈ Fin | |
| 15 | isfinite 9634 | . . . . . . . . . . . . 13 ⊢ ((𝑁..^𝑛) ∈ Fin ↔ (𝑁..^𝑛) ≺ ω) | |
| 16 | 15 | biimpi 219 | . . . . . . . . . . . 12 ⊢ ((𝑁..^𝑛) ∈ Fin → (𝑁..^𝑛) ≺ ω) |
| 17 | sdomdom 8989 | . . . . . . . . . . . 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 13721 | . . . . . . . . . . . 12 ⊢ (𝑖 ∈ (𝑁..^𝑛) → 𝑖 ∈ (ℤ≥‘𝑁)) | |
| 23 | 2 | eqcomi 2771 | . . . . . . . . . . . 12 ⊢ (ℤ≥‘𝑁) = 𝑍 |
| 24 | 22, 23 | eleqtrdi 2872 | . . . . . . . . . . 11 ⊢ (𝑖 ∈ (𝑁..^𝑛) → 𝑖 ∈ 𝑍) |
| 25 | 24 | adantl 487 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ (𝑁..^𝑛)) → 𝑖 ∈ 𝑍) |
| 26 | 21, 25 | ffvelcdmd 7081 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ (𝑁..^𝑛)) → (𝐸‘𝑖) ∈ 𝑆) |
| 27 | 11, 20, 26 | saliuncl 47138 | . . . . . . . 8 ⊢ (𝜑 → ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖) ∈ 𝑆) |
| 28 | 27 | adantr 486 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖) ∈ 𝑆) |
| 29 | saldifcl2 47143 | . . . . . . 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 7113 | . . . . 5 ⊢ (𝜑 → 𝐹:𝑍⟶𝑆) |
| 32 | 31 | ffvelcdmda 7080 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐹‘𝑛) ∈ 𝑆) |
| 33 | eqid 2762 | . . . . . . 7 ⊢ (ℤ≥‘𝑁) = (ℤ≥‘𝑁) | |
| 34 | 33 | uzct 45884 | . . . . . 6 ⊢ (ℤ≥‘𝑁) ≼ ω |
| 35 | 2, 34 | eqbrtri 5130 | . . . . 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 47281 | . . 3 ⊢ (𝜑 → (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐹‘𝑛)) = (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛))))) |
| 39 | eqidd 2763 | . . 3 ⊢ (𝜑 → (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛)))) = (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛))))) | |
| 40 | 8, 38, 39 | 3eqtrd 2801 | . 2 ⊢ (𝜑 → (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛)) = (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛))))) |
| 41 | 2 | fvexi 6896 | . . . 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 47273 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝑀‘(𝐹‘𝑛)) ∈ (0[,]+∞)) |
| 45 | 43, 10, 13 | meacl 47273 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝑀‘(𝐸‘𝑛)) ∈ (0[,]+∞)) |
| 46 | simpr 490 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑛 ∈ 𝑍) | |
| 47 | 13 | difexd 5300 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ∈ V) |
| 48 | 4 | fvmpt2 7002 | . . . . . 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 4087 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ⊆ (𝐸‘𝑛)) | |
| 51 | 49, 50 | eqsstrd 3968 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐹‘𝑛) ⊆ (𝐸‘𝑛)) |
| 52 | 43, 10, 32, 13, 51 | meassle 47278 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝑀‘(𝐹‘𝑛)) ≤ (𝑀‘(𝐸‘𝑛))) |
| 53 | 1, 42, 44, 45, 52 | sge0lempt 47225 | . 2 ⊢ (𝜑 → (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛)))) ≤ (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))))) |
| 54 | 40, 53 | eqbrtrd 5131 | 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 2145 ∀wral 3078 Vcvv 3453 ∖ cdif 3899 ∪ ciun 4954 Disj wdisj 5074 class class class wbr 5107 ↦ cmpt 5190 dom cdm 5659 ⟶wf 6533 ‘cfv 6537 (class class class)co 7416 ωcom 7865 ≼ cdom 8953 ≺ csdm 8954 Fincfn 8955 ≤ cle 11271 ℤ≥cuz 12890 ...cfz 13563 ..^cfzo 13711 SAlgcsalg 47123 Σ^csumge0 47177 Meascmea 47264 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 ax-inf2 9623 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 ax-pre-sup 11205 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-int 4911 df-iun 4956 df-disj 5075 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-se 5613 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-isom 6546 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7866 df-1st 7989 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-1o 8458 df-2o 8459 df-oadd 8462 df-omul 8463 df-er 8699 df-map 8831 df-en 8956 df-dom 8957 df-sdom 8958 df-fin 8959 df-sup 9415 df-oi 9485 df-card 9947 df-acn 9950 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-div 11899 df-nn 12261 df-2 12330 df-3 12331 df-n0 12532 df-z 12619 df-uz 12891 df-rp 13045 df-xadd 13166 df-ico 13406 df-icc 13407 df-fz 13564 df-fzo 13712 df-seq 14068 df-exp 14128 df-hash 14397 df-cj 15188 df-re 15189 df-im 15190 df-sqrt 15324 df-abs 15325 df-clim 15577 df-sum 15776 df-salg 47124 df-sumge0 47178 df-mea 47265 |
| This theorem is used by: meaiunle 47284 |
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