¼­¿ï´ë ÀÛ¿ë¼Ò ¼¼¹Ì³ª

2006 Nov 22: Muneo Cho(Kanagawa Univ.); Numerical ranges of some Hilbert space operators

2007 Dec 7: Muneo Cho(Kanagawa Univ.); Xia spectrum for some class of operators

2011 Jun 13: Muneo Cho(Kanagawa Univ.); On m-isometric operators