PCA sets and convexity
Fundamenta Mathematicae, Tome 163 (2000) no. 3, pp. 267-275
Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences
Three sets occurring in functional analysis are shown to be of class PCA (also called $Σ^1_2$) and to be exactly of that class. The definition of each set is close to the usual objects of modern analysis, but some subtlety causes the sets to have a greater complexity than expected. Recent work in a similar direction is in [1, 2, 10, 11, 12].
@article{10_4064_fm_163_3_267_275,
author = {Robert Kaufman},
title = {PCA sets and convexity},
journal = {Fundamenta Mathematicae},
pages = {267--275},
publisher = {mathdoc},
volume = {163},
number = {3},
year = {2000},
doi = {10.4064/fm-163-3-267-275},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-163-3-267-275/}
}
Robert Kaufman. PCA sets and convexity. Fundamenta Mathematicae, Tome 163 (2000) no. 3, pp. 267-275. doi: 10.4064/fm-163-3-267-275
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