Mathematics – Functional Analysis
Scientific paper
2002-07-06
J. Math. Anal. Appl. 269(2002), 519-532
Mathematics
Functional Analysis
16 pages
Scientific paper
Tchakaloff's Theorem establishes the existence of a quadrature rule of prescribed degree relative to a positive, compactly supported measure that is absolutely continuous with respect to Lebesgue measure on $\mathbb{R}^{d}$. Subsequent extensions were obtained by Mysovskikh and by Putinar. We provide new proofs and partial extensions of these results, based on duality techniques utilized by Stochel. We also obtain new uniqueness criteria in the Truncated Complex Moment Problem.
Curto Raul E.
Fialkow Lawrence A.
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