Diego Calle
Instructor
![Diego Calle profile picture](/content/math_vt_edu/en/people/faculty/calle-diego/_jcr_content/bio-image.transform/m-medium/image.jpg)
McBryde Hall, Office 443
Virginia Tech
225 Stanger Street
Blacksburg, VA 24061-1026
Virginia Tech
225 Stanger Street
Blacksburg, VA 24061-1026
An important problem in Banach space theory since the 1950´s has been the study of the structure of closed algebraic ideals in the algebra L(X). The Banach spaces X for which that structure is well-known are very few. It is known that every non-zero ideal in L(X) contains the ideal of all finite-rank operators on X and that if X has a Schauder basis every non-zero closed ideal in L(X) contains the ideal of all compact operators on X.