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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 23441 | . 2 ⊢ (𝐹 ∈ dom ∫1 ↔ (𝐹 ∈ MblFn ∧ (𝐹:ℝ⟶ℝ ∧ ran 𝐹 ∈ Fin ∧ (vol‘(◡𝐹 “ (ℝ ∖ {0}))) ∈ ℝ))) | |
2 | 1 | simplbi 476 | 1 ⊢ (𝐹 ∈ dom ∫1 → 𝐹 ∈ MblFn) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1037 ∈ wcel 1990 ∖ cdif 3571 {csn 4177 ◡ccnv 5113 dom cdm 5114 ran crn 5115 “ cima 5117 ⟶wf 5884 ‘cfv 5888 Fincfn 7955 ℝcr 9935 0cc0 9936 volcvol 23232 MblFncmbf 23383 ∫1citg1 23384 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-fv 5896 df-sum 14417 df-itg1 23389 |
This theorem is referenced by: i1fima 23445 i1fadd 23462 mbfmullem2 23491 itg2monolem1 23517 itg2i1fseq 23522 i1fibl 23574 itg2addnclem2 33462 ftc1anclem4 33488 ftc1anclem5 33489 ftc1anclem8 33492 |
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