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Theorem sitgfval 30743
Description: Value of the Bochner integral for a simple function 𝐹. (Contributed by Thierry Arnoux, 30-Jan-2018.)
Hypotheses
Ref Expression
sitgval.b 𝐵 = (Base‘𝑊)
sitgval.j 𝐽 = (TopOpen‘𝑊)
sitgval.s 𝑆 = (sigaGen‘𝐽)
sitgval.0 0 = (0g𝑊)
sitgval.x · = ( ·𝑠𝑊)
sitgval.h 𝐻 = (ℝHom‘(Scalar‘𝑊))
sitgval.1 (𝜑𝑊𝑉)
sitgval.2 (𝜑𝑀 ran measures)
sibfmbl.1 (𝜑𝐹 ∈ dom (𝑊sitg𝑀))
Assertion
Ref Expression
sitgfval (𝜑 → ((𝑊sitg𝑀)‘𝐹) = (𝑊 Σg (𝑥 ∈ (ran 𝐹 ∖ { 0 }) ↦ ((𝐻‘(𝑀‘(𝐹 “ {𝑥}))) · 𝑥))))
Distinct variable groups:   𝑥,𝐹   𝑥,𝑀   𝑥,𝑊   𝑥, 0   𝜑,𝑥
Allowed substitution hints:   𝐵(𝑥)   𝑆(𝑥)   · (𝑥)   𝐻(𝑥)   𝐽(𝑥)   𝑉(𝑥)

Proof of Theorem sitgfval
Dummy variables 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 sitgval.b . . 3 𝐵 = (Base‘𝑊)
2 sitgval.j . . 3 𝐽 = (TopOpen‘𝑊)
3 sitgval.s . . 3 𝑆 = (sigaGen‘𝐽)
4 sitgval.0 . . 3 0 = (0g𝑊)
5 sitgval.x . . 3 · = ( ·𝑠𝑊)
6 sitgval.h . . 3 𝐻 = (ℝHom‘(Scalar‘𝑊))
7 sitgval.1 . . 3 (𝜑𝑊𝑉)
8 sitgval.2 . . 3 (𝜑𝑀 ran measures)
91, 2, 3, 4, 5, 6, 7, 8sitgval 30734 . 2 (𝜑 → (𝑊sitg𝑀) = (𝑓 ∈ {𝑔 ∈ (dom 𝑀MblFnM𝑆) ∣ (ran 𝑔 ∈ Fin ∧ ∀𝑥 ∈ (ran 𝑔 ∖ { 0 })(𝑀‘(𝑔 “ {𝑥})) ∈ (0[,)+∞))} ↦ (𝑊 Σg (𝑥 ∈ (ran 𝑓 ∖ { 0 }) ↦ ((𝐻‘(𝑀‘(𝑓 “ {𝑥}))) · 𝑥)))))
10 simpr 471 . . . . . 6 ((𝜑𝑓 = 𝐹) → 𝑓 = 𝐹)
1110rneqd 5490 . . . . 5 ((𝜑𝑓 = 𝐹) → ran 𝑓 = ran 𝐹)
1211difeq1d 3878 . . . 4 ((𝜑𝑓 = 𝐹) → (ran 𝑓 ∖ { 0 }) = (ran 𝐹 ∖ { 0 }))
1310cnveqd 5435 . . . . . . . 8 ((𝜑𝑓 = 𝐹) → 𝑓 = 𝐹)
1413imaeq1d 5605 . . . . . . 7 ((𝜑𝑓 = 𝐹) → (𝑓 “ {𝑥}) = (𝐹 “ {𝑥}))
1514fveq2d 6337 . . . . . 6 ((𝜑𝑓 = 𝐹) → (𝑀‘(𝑓 “ {𝑥})) = (𝑀‘(𝐹 “ {𝑥})))
1615fveq2d 6337 . . . . 5 ((𝜑𝑓 = 𝐹) → (𝐻‘(𝑀‘(𝑓 “ {𝑥}))) = (𝐻‘(𝑀‘(𝐹 “ {𝑥}))))
1716oveq1d 6811 . . . 4 ((𝜑𝑓 = 𝐹) → ((𝐻‘(𝑀‘(𝑓 “ {𝑥}))) · 𝑥) = ((𝐻‘(𝑀‘(𝐹 “ {𝑥}))) · 𝑥))
1812, 17mpteq12dv 4868 . . 3 ((𝜑𝑓 = 𝐹) → (𝑥 ∈ (ran 𝑓 ∖ { 0 }) ↦ ((𝐻‘(𝑀‘(𝑓 “ {𝑥}))) · 𝑥)) = (𝑥 ∈ (ran 𝐹 ∖ { 0 }) ↦ ((𝐻‘(𝑀‘(𝐹 “ {𝑥}))) · 𝑥)))
1918oveq2d 6812 . 2 ((𝜑𝑓 = 𝐹) → (𝑊 Σg (𝑥 ∈ (ran 𝑓 ∖ { 0 }) ↦ ((𝐻‘(𝑀‘(𝑓 “ {𝑥}))) · 𝑥))) = (𝑊 Σg (𝑥 ∈ (ran 𝐹 ∖ { 0 }) ↦ ((𝐻‘(𝑀‘(𝐹 “ {𝑥}))) · 𝑥))))
20 sibfmbl.1 . . . . 5 (𝜑𝐹 ∈ dom (𝑊sitg𝑀))
211, 2, 3, 4, 5, 6, 7, 8, 20sibfmbl 30737 . . . 4 (𝜑𝐹 ∈ (dom 𝑀MblFnM𝑆))
221, 2, 3, 4, 5, 6, 7, 8, 20sibfrn 30739 . . . 4 (𝜑 → ran 𝐹 ∈ Fin)
231, 2, 3, 4, 5, 6, 7, 8, 20sibfima 30740 . . . . 5 ((𝜑𝑥 ∈ (ran 𝐹 ∖ { 0 })) → (𝑀‘(𝐹 “ {𝑥})) ∈ (0[,)+∞))
2423ralrimiva 3115 . . . 4 (𝜑 → ∀𝑥 ∈ (ran 𝐹 ∖ { 0 })(𝑀‘(𝐹 “ {𝑥})) ∈ (0[,)+∞))
2521, 22, 24jca32 505 . . 3 (𝜑 → (𝐹 ∈ (dom 𝑀MblFnM𝑆) ∧ (ran 𝐹 ∈ Fin ∧ ∀𝑥 ∈ (ran 𝐹 ∖ { 0 })(𝑀‘(𝐹 “ {𝑥})) ∈ (0[,)+∞))))
26 rneq 5488 . . . . . 6 (𝑔 = 𝐹 → ran 𝑔 = ran 𝐹)
2726eleq1d 2835 . . . . 5 (𝑔 = 𝐹 → (ran 𝑔 ∈ Fin ↔ ran 𝐹 ∈ Fin))
2826difeq1d 3878 . . . . . 6 (𝑔 = 𝐹 → (ran 𝑔 ∖ { 0 }) = (ran 𝐹 ∖ { 0 }))
29 cnveq 5433 . . . . . . . . 9 (𝑔 = 𝐹𝑔 = 𝐹)
3029imaeq1d 5605 . . . . . . . 8 (𝑔 = 𝐹 → (𝑔 “ {𝑥}) = (𝐹 “ {𝑥}))
3130fveq2d 6337 . . . . . . 7 (𝑔 = 𝐹 → (𝑀‘(𝑔 “ {𝑥})) = (𝑀‘(𝐹 “ {𝑥})))
3231eleq1d 2835 . . . . . 6 (𝑔 = 𝐹 → ((𝑀‘(𝑔 “ {𝑥})) ∈ (0[,)+∞) ↔ (𝑀‘(𝐹 “ {𝑥})) ∈ (0[,)+∞)))
3328, 32raleqbidv 3301 . . . . 5 (𝑔 = 𝐹 → (∀𝑥 ∈ (ran 𝑔 ∖ { 0 })(𝑀‘(𝑔 “ {𝑥})) ∈ (0[,)+∞) ↔ ∀𝑥 ∈ (ran 𝐹 ∖ { 0 })(𝑀‘(𝐹 “ {𝑥})) ∈ (0[,)+∞)))
3427, 33anbi12d 616 . . . 4 (𝑔 = 𝐹 → ((ran 𝑔 ∈ Fin ∧ ∀𝑥 ∈ (ran 𝑔 ∖ { 0 })(𝑀‘(𝑔 “ {𝑥})) ∈ (0[,)+∞)) ↔ (ran 𝐹 ∈ Fin ∧ ∀𝑥 ∈ (ran 𝐹 ∖ { 0 })(𝑀‘(𝐹 “ {𝑥})) ∈ (0[,)+∞))))
3534elrab 3515 . . 3 (𝐹 ∈ {𝑔 ∈ (dom 𝑀MblFnM𝑆) ∣ (ran 𝑔 ∈ Fin ∧ ∀𝑥 ∈ (ran 𝑔 ∖ { 0 })(𝑀‘(𝑔 “ {𝑥})) ∈ (0[,)+∞))} ↔ (𝐹 ∈ (dom 𝑀MblFnM𝑆) ∧ (ran 𝐹 ∈ Fin ∧ ∀𝑥 ∈ (ran 𝐹 ∖ { 0 })(𝑀‘(𝐹 “ {𝑥})) ∈ (0[,)+∞))))
3625, 35sylibr 224 . 2 (𝜑𝐹 ∈ {𝑔 ∈ (dom 𝑀MblFnM𝑆) ∣ (ran 𝑔 ∈ Fin ∧ ∀𝑥 ∈ (ran 𝑔 ∖ { 0 })(𝑀‘(𝑔 “ {𝑥})) ∈ (0[,)+∞))})
37 ovexd 6829 . 2 (𝜑 → (𝑊 Σg (𝑥 ∈ (ran 𝐹 ∖ { 0 }) ↦ ((𝐻‘(𝑀‘(𝐹 “ {𝑥}))) · 𝑥))) ∈ V)
389, 19, 36, 37fvmptd 6432 1 (𝜑 → ((𝑊sitg𝑀)‘𝐹) = (𝑊 Σg (𝑥 ∈ (ran 𝐹 ∖ { 0 }) ↦ ((𝐻‘(𝑀‘(𝐹 “ {𝑥}))) · 𝑥))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 382   = wceq 1631  wcel 2145  wral 3061  {crab 3065  Vcvv 3351  cdif 3720  {csn 4317   cuni 4575  cmpt 4864  ccnv 5249  dom cdm 5250  ran crn 5251  cima 5253  cfv 6030  (class class class)co 6796  Fincfn 8113  0cc0 10142  +∞cpnf 10277  [,)cico 12382  Basecbs 16064  Scalarcsca 16152   ·𝑠 cvsca 16153  TopOpenctopn 16290  0gc0g 16308   Σg cgsu 16309  ℝHomcrrh 30377  sigaGencsigagen 30541  measurescmeas 30598  MblFnMcmbfm 30652  sitgcsitg 30731
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1870  ax-4 1885  ax-5 1991  ax-6 2057  ax-7 2093  ax-9 2154  ax-10 2174  ax-11 2190  ax-12 2203  ax-13 2408  ax-ext 2751  ax-rep 4905  ax-sep 4916  ax-nul 4924  ax-pr 5035
This theorem depends on definitions:  df-bi 197  df-an 383  df-or 837  df-3an 1073  df-tru 1634  df-ex 1853  df-nf 1858  df-sb 2050  df-eu 2622  df-mo 2623  df-clab 2758  df-cleq 2764  df-clel 2767  df-nfc 2902  df-ne 2944  df-ral 3066  df-rex 3067  df-reu 3068  df-rab 3070  df-v 3353  df-sbc 3588  df-csb 3683  df-dif 3726  df-un 3728  df-in 3730  df-ss 3737  df-nul 4064  df-if 4227  df-sn 4318  df-pr 4320  df-op 4324  df-uni 4576  df-iun 4657  df-br 4788  df-opab 4848  df-mpt 4865  df-id 5158  df-xp 5256  df-rel 5257  df-cnv 5258  df-co 5259  df-dm 5260  df-rn 5261  df-res 5262  df-ima 5263  df-iota 5993  df-fun 6032  df-fn 6033  df-f 6034  df-f1 6035  df-fo 6036  df-f1o 6037  df-fv 6038  df-ov 6799  df-oprab 6800  df-mpt2 6801  df-sitg 30732
This theorem is referenced by:  sitgclg  30744  sitg0  30748
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