On products of Radon measures

C. Gryllakis; S. Grekas

Fundamenta Mathematicae (1999)

  • Volume: 159, Issue: 1, page 71-84
  • ISSN: 0016-2736

Abstract

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Let X = [ 0 , 1 ] Γ with card Γ ≥ c (c denotes the continuum). We construct two Radon measures μ,ν on X such that there exist open subsets of X × X which are not measurable for the simple outer product measure. Moreover, these measures are strikingly similar to the Lebesgue product measure: for every finite F ⊆ Γ, the projections of μ and ν onto [ 0 , 1 ] F are equivalent to the F-dimensional Lebesgue measure. We generalize this construction to any compact group of weight ≥ c, by replacing the Lebesgue product measure with the Haar measure.

How to cite

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Gryllakis, C., and Grekas, S.. "On products of Radon measures." Fundamenta Mathematicae 159.1 (1999): 71-84. <http://eudml.org/doc/212320>.

@article{Gryllakis1999,
abstract = {Let $X = [0,1]^Γ$ with card Γ ≥ c (c denotes the continuum). We construct two Radon measures μ,ν on X such that there exist open subsets of X × X which are not measurable for the simple outer product measure. Moreover, these measures are strikingly similar to the Lebesgue product measure: for every finite F ⊆ Γ, the projections of μ and ν onto $[0,1]^F$ are equivalent to the F-dimensional Lebesgue measure. We generalize this construction to any compact group of weight ≥ c, by replacing the Lebesgue product measure with the Haar measure.},
author = {Gryllakis, C., Grekas, S.},
journal = {Fundamenta Mathematicae},
keywords = {product measure problem; Radon measure; Haar measure},
language = {eng},
number = {1},
pages = {71-84},
title = {On products of Radon measures},
url = {http://eudml.org/doc/212320},
volume = {159},
year = {1999},
}

TY - JOUR
AU - Gryllakis, C.
AU - Grekas, S.
TI - On products of Radon measures
JO - Fundamenta Mathematicae
PY - 1999
VL - 159
IS - 1
SP - 71
EP - 84
AB - Let $X = [0,1]^Γ$ with card Γ ≥ c (c denotes the continuum). We construct two Radon measures μ,ν on X such that there exist open subsets of X × X which are not measurable for the simple outer product measure. Moreover, these measures are strikingly similar to the Lebesgue product measure: for every finite F ⊆ Γ, the projections of μ and ν onto $[0,1]^F$ are equivalent to the F-dimensional Lebesgue measure. We generalize this construction to any compact group of weight ≥ c, by replacing the Lebesgue product measure with the Haar measure.
LA - eng
KW - product measure problem; Radon measure; Haar measure
UR - http://eudml.org/doc/212320
ER -

References

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  1. [B-F] B. Balcar and F. Franek, Independent families in complete Boolean algebras, Trans. Amer. Math. Soc. 274 (1982), 607-618. Zbl0527.06008
  2. [Bo] N. Bourbaki, Intégration, Ch. 8, Hermann, Paris, 1959-1967. 
  3. [C] J. R. Choksi, Recent developments arising out of Kakutani's work on completion regularity of measures, in: Contemp. Math. 26, Amer. Math. Soc., Providence, R.I., 1984, 81-94. Zbl0538.28008
  4. [E] B. A. Efimov, Mappings and embeddings of dyadic spaces, Mat. Sb. 103 (1977), 52-68 (in Russian). 
  5. [Er-Ox] P. Erdős and J. C. Oxtoby, Partitions of the plane into sets having positive measure in every non-null measurable product set, Trans. Amer. Math. Soc. 79 (1955), 91-102. Zbl0066.29801
  6. [Fr₁] D. H. Fremlin, Products of Radon measures: a counter-example, Canad. Math. Bull. 19 (1976), 285-289. Zbl0353.28005
  7. [Fr₂] D. H. Fremlin, Measure Theory, University of Essex, Colchester, 1994. 
  8. [Fr-Gr] D. H. Fremlin and S. Grekas, Products of completion regular measures, Fund. Math. 147 (1995), 27-37. Zbl0843.28005
  9. [Gr₁] S. Grekas, Structural properties of compact groups with measure-theoretic applications, Israel J. Math. 87 (1994), 89-95. Zbl0831.28007
  10. [Gr₂] S. Grekas, Measure-theoretic problems in topological dynamics, J. Anal. Math. 65 (1995), 207-220. Zbl0870.28009
  11. [Gr-Me] S. Grekas and S. Mercourakis, On the measure theoretic structure of compact groups, Trans. Amer. Math. Soc. 350 (1998), 2779-2796. Zbl0912.43001
  12. [Gry] C. Gryllakis, Products of completion regular measures, Proc. Amer. Math. Soc. 103 (1988), 563-568. Zbl0655.28005
  13. [H] R. Haydon, On Banach spaces which contain l 1 ( τ ) and types of measures on compact spaces, Israel J. Math. 28 (1977), 313-324. Zbl0365.46020
  14. [He-Ro] E. Hewitt and K. Ross, Abstract Harmonic Analysis I, Springer, Berlin, 1963. 
  15. [K] V. Kuz'minov, On a hypothesis of P. S. Aleksandrov in the theory of topological groups, Dokl. Akad. Nauk SSSR 125 (1959), 727-729 (in Russian). 
  16. [Mo-Zi] D. Montgomery and L. Zippin, Topological Transformation Groups, Interscience, 1955. 
  17. [Mos] P. S. Mostert, Sections in principal fibre spaces, Duke Math. J. 23 (1956), 57-71. Zbl0072.18102
  18. [P] A. Pełczyński, Linear extensions, linear averagings, and their applications to linear topological classification of spaces of continuous functions, Dissertationes Math. 58 (1968). Zbl0165.14603
  19. [Pr] J. F. Price, Lie Groups and Compact Groups, Cambridge Univ. Press, 1977. 
  20. [T₁] M. Talagrand, Pettis integral and measure theory, Mem. Amer. Math. Soc. 307 (1984). Zbl0582.46049
  21. DUPA[T₂] M. Talagrand, On liftings and the regularization of stochastic processes, Probab. Theory Related Fields 78 (1988), 127-134. Zbl0627.60046
  22. [U] V. V. Uspenskiĭ, Why compact groups are dyadic, in: General Topology and its Relations to Modern Analysis and Algebra VI, Proc. Sixth Prague Topological Symposium 1986, Z. Frolík (ed.), Heldermann, Berlin, 1988, 601-610. 

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