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Semigroup Forum

, Volume 53, Issue 1, pp 317–320 | Cite as

Separation by characters or positive definite functions

  • Torben Maack Bisgaard
Research Article

Keywords

Semigroup Forum Moment Problem Science Research Council Commutative Semigroup Positive Definite Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    Berg, C., Christensen, J. P. R., and Jensen, C. U.,A remark on the multidimensional moment problem, Math. Ann.243(1979), 163–169.zbMATHCrossRefMathSciNetGoogle Scholar
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    Berg, C., Christensen, J. P. R., and Ressel, P., “Harmonic Analysis on Semigroups,” Springer-Verlag, Berlin, 1984.zbMATHGoogle Scholar
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    Bisgaard, T. M.,Extension of characters on *-semigroups, Math. Ann.282(1988), 251–258.zbMATHCrossRefMathSciNetGoogle Scholar
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    Kaplansky, I., “Infinite Abelian Groups,” University of Michigan Press, Ann Arbor, 1954.zbMATHGoogle Scholar
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    Sasvári, Z., “Positive Definite and Definitizable Functions,” Akademie Verlag, Berlin, 1994.zbMATHGoogle Scholar
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    Schmüdgen, K.,An example of a positive polynomial which is not a sum of squares of polynomials. A positive, but not strongly positive functional, Math. Nachr.88(1979), 385–390.zbMATHMathSciNetGoogle Scholar

Copyright information

© Springer-Verlag New York Inc. 1996

Authors and Affiliations

  • Torben Maack Bisgaard
    • 1
  1. 1.Frederiksberg CDenmark

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