The number of positive weights of a quadrature formula
- Cite this article as:
- Sottas, G. & Wanner, G. BIT (1982) 22: 339. doi:10.1007/BF01934447
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In this paper we show that the number of positive weights of a quadrature formula is related to the number of rotations of a certain path in the plane. Necessary and sufficient conditions for all weights to be positive can then be obtained. Also, much of classical theory appears in a new light.