Abstract
We generalize an important property of trigonometric series to the case of series by orthonormal spline systems corresponding to the dyadic sequence of grid points. We prove that Ciesielski series cannot diverge to infinity on a set of positive measure.
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The first and second authors are supported by SCS RA grant 18T-1A074.
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Gevorkyan, G.G., Keryan, K.A. & Poghosyan, M.P. Convergence to infinity for orthonormal spline series. Acta Math. Hungar. 162, 604–617 (2020). https://doi.org/10.1007/s10474-020-01051-4
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DOI: https://doi.org/10.1007/s10474-020-01051-4