Ascent, descent and roots of Fredholm operators
نویسندگان
چکیده
منابع مشابه
Ascent and Descent for Sets of Operators
We extend the notion of ascent and descent for an operator acting on a vector space to sets of operators. If the ascent and descent of a set are both finite then they must be equal and give rise to a canonical decomposition of the space. Algebras of operators, unions of sets and closures of sets are treated. As an application we construct a Browder joint spectrum for commuting tuples of bounded...
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ژورنال
عنوان ژورنال: Studia Mathematica
سال: 2003
ISSN: 0039-3223,1730-6337
DOI: 10.4064/sm158-3-3