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We study the smallest singular value of a square random matrix with i.i.d. columns drawn from an isotropic symmetric log-concave distribution. We prove a deviation inequality in terms of the isotropic constant of the distribution.
On étudie la plus petite valeur singulière d'une matrice carrée aléatoire dont les colonnes sont des vecteurs aléatoires i.i.d. suivant une loi à densité log-concave isotrope. On démontre une inégalité de déviation en fonction de la constante d'isotropie.
Adamczak, Radosław 1 ; Guédon, Olivier 2 ; Litvak, Alexander 3 ; Pajor, Alain 4 ; Tomczak-Jaegermann, Nicole 3
@article{CRMATH_2008__346_15-16_853_0, author = {Adamczak, Rados{\l}aw and Gu\'edon, Olivier and Litvak, Alexander and Pajor, Alain and Tomczak-Jaegermann, Nicole}, title = {Smallest singular value of random matrices with independent columns}, journal = {Comptes Rendus. Math\'ematique}, pages = {853--856}, publisher = {Elsevier}, volume = {346}, number = {15-16}, year = {2008}, doi = {10.1016/j.crma.2008.07.011}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.1016/j.crma.2008.07.011/} }
TY - JOUR AU - Adamczak, Radosław AU - Guédon, Olivier AU - Litvak, Alexander AU - Pajor, Alain AU - Tomczak-Jaegermann, Nicole TI - Smallest singular value of random matrices with independent columns JO - Comptes Rendus. Mathématique PY - 2008 SP - 853 EP - 856 VL - 346 IS - 15-16 PB - Elsevier UR - http://geodesic.mathdoc.fr/articles/10.1016/j.crma.2008.07.011/ DO - 10.1016/j.crma.2008.07.011 LA - en ID - CRMATH_2008__346_15-16_853_0 ER -
%0 Journal Article %A Adamczak, Radosław %A Guédon, Olivier %A Litvak, Alexander %A Pajor, Alain %A Tomczak-Jaegermann, Nicole %T Smallest singular value of random matrices with independent columns %J Comptes Rendus. Mathématique %D 2008 %P 853-856 %V 346 %N 15-16 %I Elsevier %U http://geodesic.mathdoc.fr/articles/10.1016/j.crma.2008.07.011/ %R 10.1016/j.crma.2008.07.011 %G en %F CRMATH_2008__346_15-16_853_0
Adamczak, Radosław; Guédon, Olivier; Litvak, Alexander; Pajor, Alain; Tomczak-Jaegermann, Nicole. Smallest singular value of random matrices with independent columns. Comptes Rendus. Mathématique, Tome 346 (2008) no. 15-16, pp. 853-856. doi : 10.1016/j.crma.2008.07.011. http://geodesic.mathdoc.fr/articles/10.1016/j.crma.2008.07.011/
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