Abstract
Let\(\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{\alpha } = (\alpha _1 ,\alpha _2 , \ldots \alpha _m ) \in \mathbb{R}_{ > 0}^m \). Let\(\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{\alpha } _{i,j} \) be the vector obtained from\(\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{\alpha } \) on deleting the entries αi and αj. We investigate some invariants and near invariants related to the solutions\(\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{ \in } \in \{ \pm 1\} ^{m - 2} \) of the linear inequality
, where <,> denotes the usual inner product. One of our methods relates, by the use of Rademacher functions, integrals involving products of trigonometric functions to these quantities.
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References
I. S. Gradshteyn andI. M. Ryzhik, Table of integrals, series, and products. New York 1980.
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Besser, A., Moree, P. On an invariant related to a linear inequality. Arch. Math 79, 463–471 (2002). https://doi.org/10.1007/BF02638383
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DOI: https://doi.org/10.1007/BF02638383