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Theorem sibff 30738
Description: A simple function is a function. (Contributed by Thierry Arnoux, 19-Feb-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
sibff (𝜑𝐹: dom 𝑀 𝐽)

Proof of Theorem sibff
StepHypRef Expression
1 sitgval.2 . . . 4 (𝜑𝑀 ran measures)
2 dmmeas 30604 . . . 4 (𝑀 ran measures → dom 𝑀 ran sigAlgebra)
31, 2syl 17 . . 3 (𝜑 → dom 𝑀 ran sigAlgebra)
4 sitgval.s . . . 4 𝑆 = (sigaGen‘𝐽)
5 sitgval.j . . . . . 6 𝐽 = (TopOpen‘𝑊)
6 fvexd 6344 . . . . . 6 (𝜑 → (TopOpen‘𝑊) ∈ V)
75, 6syl5eqel 2854 . . . . 5 (𝜑𝐽 ∈ V)
87sgsiga 30545 . . . 4 (𝜑 → (sigaGen‘𝐽) ∈ ran sigAlgebra)
94, 8syl5eqel 2854 . . 3 (𝜑𝑆 ran sigAlgebra)
10 sitgval.b . . . 4 𝐵 = (Base‘𝑊)
11 sitgval.0 . . . 4 0 = (0g𝑊)
12 sitgval.x . . . 4 · = ( ·𝑠𝑊)
13 sitgval.h . . . 4 𝐻 = (ℝHom‘(Scalar‘𝑊))
14 sitgval.1 . . . 4 (𝜑𝑊𝑉)
15 sibfmbl.1 . . . 4 (𝜑𝐹 ∈ dom (𝑊sitg𝑀))
1610, 5, 4, 11, 12, 13, 14, 1, 15sibfmbl 30737 . . 3 (𝜑𝐹 ∈ (dom 𝑀MblFnM𝑆))
173, 9, 16mbfmf 30657 . 2 (𝜑𝐹: dom 𝑀 𝑆)
184unieqi 4583 . . . 4 𝑆 = (sigaGen‘𝐽)
19 unisg 30546 . . . . 5 (𝐽 ∈ V → (sigaGen‘𝐽) = 𝐽)
207, 19syl 17 . . . 4 (𝜑 (sigaGen‘𝐽) = 𝐽)
2118, 20syl5eq 2817 . . 3 (𝜑 𝑆 = 𝐽)
2221feq3d 6172 . 2 (𝜑 → (𝐹: dom 𝑀 𝑆𝐹: dom 𝑀 𝐽))
2317, 22mpbid 222 1 (𝜑𝐹: dom 𝑀 𝐽)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1631  wcel 2145  Vcvv 3351   cuni 4574  dom cdm 5249  ran crn 5250  wf 6027  cfv 6031  (class class class)co 6793  Basecbs 16064  Scalarcsca 16152   ·𝑠 cvsca 16153  TopOpenctopn 16290  0gc0g 16308  ℝHomcrrh 30377  sigAlgebracsiga 30510  sigaGencsigagen 30541  measurescmeas 30598  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-8 2147  ax-9 2154  ax-10 2174  ax-11 2190  ax-12 2203  ax-13 2408  ax-ext 2751  ax-rep 4904  ax-sep 4915  ax-nul 4923  ax-pow 4974  ax-pr 5034  ax-un 7096
This theorem depends on definitions:  df-bi 197  df-an 383  df-or 837  df-3an 1073  df-tru 1634  df-fal 1637  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 4226  df-pw 4299  df-sn 4317  df-pr 4319  df-op 4323  df-uni 4575  df-int 4612  df-iun 4656  df-br 4787  df-opab 4847  df-mpt 4864  df-id 5157  df-xp 5255  df-rel 5256  df-cnv 5257  df-co 5258  df-dm 5259  df-rn 5260  df-res 5261  df-ima 5262  df-iota 5994  df-fun 6033  df-fn 6034  df-f 6035  df-f1 6036  df-fo 6037  df-f1o 6038  df-fv 6039  df-ov 6796  df-oprab 6797  df-mpt2 6798  df-1st 7315  df-2nd 7316  df-map 8011  df-esum 30430  df-siga 30511  df-sigagen 30542  df-meas 30599  df-mbfm 30653  df-sitg 30732
This theorem is referenced by:  sibfinima  30741  sibfof  30742  sitgaddlemb  30750  sitmcl  30753
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