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math.CA2007
Exponential sums with coefficients 0 or 1 and concentrated L^{p} norms
Bruce Anderson, J. Marshall Ash, Roger Jones +2
Let f be a sum of exponentials of the form exp(2 pi i N x), where the N are distinct integers. We call f an idempotent trigonometric polynomial (because the convolution of f with i…
math.GM2007★ 2 cited
Constructing a quadrilateral inside another one
J. M. Ash, M. A. Ash, P. F. Ash
Connect each vertex of a convex quadrilateral Q to the midpoint of the next (proceeding counterclockwise) side. The four connecting lines create an interior quadrilateral I. We stu…