LINEAR ALGEBRA AND ITS APPLICATIONS Special Issue in honor of Roger Horn Linear Algebra and its Applications is pleased to announce a special issue in honor of Professor Roger Horn in recognition of his many important contributions to linear algebra and the linear algebra community, and on the occasion of his 65th birthday on January 19, 2007. Papers are solicited for the special issue within the scope of LAA or research interests of Roger Horn. The deadline for submission of papers is May 1, 2006. Papers for submission should be sent to any of the four special editors, preferably pdf files as attachments in email, and will be subject to normal refereeing procedures according to LAA standards: Rajendra Bhatia Indian Statistical Institute Delhi Centre 7, S.J.S. Sansanwal Marg New Delhi, 1100016 India e-mail: rbh@isid.ac.in Fuad Kittaneh Department of Mathematics University of Jordan Amman, Jordan e-mail: fkitt@ju.edu.jo Roy Mathias (on leave from the College of William and Mary) Centre for Mathematical Biology, Mathematical Institute, 24-29 St Giles, Oxford, OX1 3LB United Kingdom e-mail: mathias@maths.ox.ac.uk Xingzhi Zhan Department of Mathematics East China Normal University Shanghai 200062 China e-mail: zhan@math.ecnu.edu.cn The responsible editor-in-chief for this special issue is Richard A. Brualdi.