NL repository

-Subject

• 2 2 x 2 operator matrices
• 1 a-Browder's theorem
• 1 a-Weyl's theorem
• 1 decomposable
• 1 generalized a-Browder's theorem
• 1 generalized a-Weyl's theorem
• 1 generalized Weyl's theorem
• 1 the property (beta)
• 1 the property (C)
• 1 Weyl's theorem