Minimal Sequences and the Kadison-Singer Problem
Bulletin of the Malaysian Mathematical Society, Tome 33 (2010) no. 2
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The Kadison-Singer problem asks: does every pure state on the C *-algebra admit a unique extension to the C *-algebra ? A yes answer is equivalent to several open conjectures including Feichtinger's: every bounded frame is a finite union of Riesz sequences. We prove that for measurable is a finite union of Riesz sequences in if and only if there exists a nonempty such that is a minimal sequence and is a Riesz sequence. We also suggest some directions for future research.
Classification :
Primary: 37B10, 42A55, 46L05.
@article{BMMS_2010_33_2_a0,
author = {Wayne Lawton},
title = {Minimal {Sequences} and the {Kadison-Singer} {Problem}},
journal = {Bulletin of the Malaysian Mathematical Society},
year = {2010},
volume = {33},
number = {2},
url = {http://geodesic.mathdoc.fr/item/BMMS_2010_33_2_a0/}
}
Wayne Lawton. Minimal Sequences and the Kadison-Singer Problem. Bulletin of the Malaysian Mathematical Society, Tome 33 (2010) no. 2. http://geodesic.mathdoc.fr/item/BMMS_2010_33_2_a0/