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| Mirrors > Home > MPE Home > Th. List > i1fmbf | Structured version Visualization version GIF version | ||
| Description: Simple functions are measurable. (Contributed by Mario Carneiro, 18-Jun-2014.) |
| Ref | Expression |
|---|---|
| i1fmbf | ⊢ (𝐹 ∈ dom ∫1 → 𝐹 ∈ MblFn) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | isi1f 25798 | . 2 ⊢ (𝐹 ∈ dom ∫1 ↔ (𝐹 ∈ MblFn ∧ (𝐹:ℝ⟶ℝ ∧ ran 𝐹 ∈ Fin ∧ (vol‘(◡𝐹 “ (ℝ ∖ {0}))) ∈ ℝ))) | |
| 2 | 1 | simplbi 501 | 1 ⊢ (𝐹 ∈ dom ∫1 → 𝐹 ∈ MblFn) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1101 ∈ wcel 2149 ∖ cdif 3910 {csn 4591 ◡ccnv 5658 dom cdm 5659 ran crn 5660 “ cima 5662 ⟶wf 6529 ‘cfv 6533 Fincfn 8939 ℝcr 11095 0cc0 11096 volcvol 25587 MblFncmbf 25738 ∫1citg1 25739 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5258 ax-nul 5268 ax-pr 5402 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-br 5111 df-opab 5175 df-mpt 5194 df-id 5554 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-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-fv 6541 df-sum 15734 df-itg1 25744 |
| This theorem is referenced by: i1fima 25802 i1fadd 25819 mbfmullem2 25848 itg2monolem1 25874 itg2i1fseq 25879 i1fibl 25932 itg2addnclem2 38206 ftc1anclem4 38230 ftc1anclem5 38231 ftc1anclem8 38234 |
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