We prove that given any natural number k and any dense point sequence (tₙ), the corresponding orthonormal spline system is an unconditional basis in reflexive .
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-sm222-1-5, author = {Markus Passenbrunner}, title = {Unconditionality of orthogonal spline systems in $L^{p}$ }, journal = {Studia Mathematica}, volume = {223}, year = {2014}, pages = {51-86}, zbl = {1304.41006}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm222-1-5} }
Markus Passenbrunner. Unconditionality of orthogonal spline systems in $L^{p}$ . Studia Mathematica, Tome 223 (2014) pp. 51-86. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm222-1-5/