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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 47202 | . . . . . 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 781 | . . . . 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 6885 | . . 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 47194 | . . . . . . . 8 ⊢ (𝜑 → 𝑆 ∈ SAlg) |
| 12 | 11 | adantr 485 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑆 ∈ SAlg) |
| 13 | 3 | ffvelcdmda 7079 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐸‘𝑛) ∈ 𝑆) |
| 14 | fzofi 14017 | . . . . . . . . . . 11 ⊢ (𝑁..^𝑛) ∈ Fin | |
| 15 | isfinite 9619 | . . . . . . . . . . . . 13 ⊢ ((𝑁..^𝑛) ∈ Fin ↔ (𝑁..^𝑛) ≺ ω) | |
| 16 | 15 | biimpi 219 | . . . . . . . . . . . 12 ⊢ ((𝑁..^𝑛) ∈ Fin → (𝑁..^𝑛) ≺ ω) |
| 17 | sdomdom 8975 | . . . . . . . . . . . 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 485 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ (𝑁..^𝑛)) → 𝐸:𝑍⟶𝑆) |
| 22 | elfzouz 13699 | . . . . . . . . . . . 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 486 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ (𝑁..^𝑛)) → 𝑖 ∈ 𝑍) |
| 26 | 21, 25 | ffvelcdmd 7080 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ (𝑁..^𝑛)) → (𝐸‘𝑖) ∈ 𝑆) |
| 27 | 11, 20, 26 | saliuncl 47065 | . . . . . . . 8 ⊢ (𝜑 → ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖) ∈ 𝑆) |
| 28 | 27 | adantr 485 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖) ∈ 𝑆) |
| 29 | saldifcl2 47070 | . . . . . . 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 1397 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ∈ 𝑆) |
| 31 | 1, 30, 4 | fmptdf 7112 | . . . . 5 ⊢ (𝜑 → 𝐹:𝑍⟶𝑆) |
| 32 | 31 | ffvelcdmda 7079 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐹‘𝑛) ∈ 𝑆) |
| 33 | eqid 2762 | . . . . . . 7 ⊢ (ℤ≥‘𝑁) = (ℤ≥‘𝑁) | |
| 34 | 33 | uzct 45811 | . . . . . 6 ⊢ (ℤ≥‘𝑁) ≼ ω |
| 35 | 2, 34 | eqbrtri 5131 | . . . . 5 ⊢ 𝑍 ≼ ω |
| 36 | 35 | a1i 11 | . . . 4 ⊢ (𝜑 → 𝑍 ≼ ω) |
| 37 | 5 | simprd 500 | . . . 4 ⊢ (𝜑 → Disj 𝑛 ∈ 𝑍 (𝐹‘𝑛)) |
| 38 | 1, 9, 10, 32, 36, 37 | meadjiun 47208 | . . 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 6895 | . . . 4 ⊢ 𝑍 ∈ V |
| 42 | 41 | a1i 11 | . . 3 ⊢ (𝜑 → 𝑍 ∈ V) |
| 43 | 9 | adantr 485 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑀 ∈ Meas) |
| 44 | 43, 10, 32 | meacl 47200 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝑀‘(𝐹‘𝑛)) ∈ (0[,]+∞)) |
| 45 | 43, 10, 13 | meacl 47200 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝑀‘(𝐸‘𝑛)) ∈ (0[,]+∞)) |
| 46 | simpr 489 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → 𝑛 ∈ 𝑍) | |
| 47 | 13 | difexd 5301 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ∈ V) |
| 48 | 4 | fvmpt2 7001 | . . . . . 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 595 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐹‘𝑛) = ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖))) |
| 50 | difssd 4090 | . . . . 5 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → ((𝐸‘𝑛) ∖ ∪ 𝑖 ∈ (𝑁..^𝑛)(𝐸‘𝑖)) ⊆ (𝐸‘𝑛)) | |
| 51 | 49, 50 | eqsstrd 3970 | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐹‘𝑛) ⊆ (𝐸‘𝑛)) |
| 52 | 43, 10, 32, 13, 51 | meassle 47205 | . . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝑀‘(𝐹‘𝑛)) ≤ (𝑀‘(𝐸‘𝑛))) |
| 53 | 1, 42, 44, 45, 52 | sge0lempt 47152 | . 2 ⊢ (𝜑 → (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐹‘𝑛)))) ≤ (Σ^‘(𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))))) |
| 54 | 40, 53 | eqbrtrd 5132 | 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 400 = wceq 1569 Ⅎwnf 1812 ∈ wcel 2142 ∀wral 3078 Vcvv 3454 ∖ cdif 3901 ∪ ciun 4955 Disj wdisj 5075 class class class wbr 5108 ↦ cmpt 5191 dom cdm 5660 ⟶wf 6532 ‘cfv 6536 (class class class)co 7412 ωcom 7860 ≼ cdom 8939 ≺ csdm 8940 Fincfn 8941 ≤ cle 11250 ℤ≥cuz 12868 ...cfz 13541 ..^cfzo 13689 SAlgcsalg 47050 Σ^csumge0 47104 Meascmea 47191 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-inf2 9608 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 ax-pre-sup 11184 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 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 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-int 4912 df-iun 4957 df-disj 5076 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-se 5614 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-isom 6545 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-1o 8451 df-2o 8452 df-oadd 8455 df-omul 8456 df-er 8692 df-map 8824 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-sup 9400 df-oi 9470 df-card 9932 df-acn 9935 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-div 11878 df-nn 12240 df-2 12309 df-3 12310 df-n0 12511 df-z 12598 df-uz 12869 df-rp 13023 df-xadd 13144 df-ico 13384 df-icc 13385 df-fz 13542 df-fzo 13690 df-seq 14045 df-exp 14105 df-hash 14374 df-cj 15157 df-re 15158 df-im 15159 df-sqrt 15293 df-abs 15294 df-clim 15546 df-sum 15745 df-salg 47051 df-sumge0 47105 df-mea 47192 |
| This theorem is used by: meaiunle 47211 |
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