Abstract
In a recent paper (SIAM J. Math. Anal., 12 (1981), pp. 935–942) we have described positive quadrature formulas (qf). The purpose of this note is to complete our results on positive qf and to extend them to qf which have a given number of positive and negative weights. Furthermore we display the connection between our results and the results of Sottas and Wanner (BIT, 22 (1982), pp. 339–352).
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