p. 255 - 264 Variations on Browder's Theorem H. Zguitti and H. Zariouh Received: February 18, 2012; Accepted: June 12, 2012 Abstract. In this note we introduce and we study the new spectral properties (Bb), (Bab) and (Baw) as continuation of [7, 8, 12] which are variants of the classical Browder's theorem. Keywords: B-Fredholm operator, Browder's theorem, Weyl's theorem. AMS Subject classification: Primary: 47A53, 47A10, 47A11; PDF Compressed Postscript Version to read ISSN 0862-9544 (Printed edition) Faculty of Mathematics, Physics and Informatics Comenius University 842 48 Bratislava, Slovak Republic Telephone: + 421-2-60295111 Fax: + 421-2-65425882 e-Mail: amuc@fmph.uniba.sk Internet: www.iam.fmph.uniba.sk/amuc © 2012, ACTA MATHEMATICA UNIVERSITATIS COMENIANAE |