%0 Journal Article %T Some equivalence classes of operators on B(H) %J Bulletin of the Iranian Mathematical Society %I Iranian Mathematical Society (IMS) %Z 1017-060X %A Aghasizadeh, T. %A Hejazian, S. %D 2011 %\ 06/01/2011 %V 37 %N No. 1 %P 225-233 %! Some equivalence classes of operators on B(H) %K Fredholm operator %K semi-Fredholm operator %K generalized invertible operator %K semi-index %R %X %U http://bims.iranjournals.ir/article_288_9840f9d71c615ac4f7e73feba39db2fa.pdf