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We consider a compact linear map T acting between Banach spaces both of which are uniformly convex and uniformly smooth; it is supposed that T has trivial kernel and range dense in the target space. It is shown that if the Gelfand numbers of T decay sufficiently quickly, then the action of T is given by a series with calculable coefficients. This provides a Banach space version of the well-known Hilbert space result of E. Schmidt.
David E. Edmunds, and Jan Lang. "Explicit representation of compact linear operators in Banach spaces via polar sets." Studia Mathematica 214.3 (2013): 265-278. <http://eudml.org/doc/285852>.
@article{DavidE2013, abstract = {We consider a compact linear map T acting between Banach spaces both of which are uniformly convex and uniformly smooth; it is supposed that T has trivial kernel and range dense in the target space. It is shown that if the Gelfand numbers of T decay sufficiently quickly, then the action of T is given by a series with calculable coefficients. This provides a Banach space version of the well-known Hilbert space result of E. Schmidt.}, author = {David E. Edmunds, Jan Lang}, journal = {Studia Mathematica}, keywords = {eigenvalues; Banach spaces; compact operators; nuclear maps; Gelfand numbers}, language = {eng}, number = {3}, pages = {265-278}, title = {Explicit representation of compact linear operators in Banach spaces via polar sets}, url = {http://eudml.org/doc/285852}, volume = {214}, year = {2013}, }
TY - JOUR AU - David E. Edmunds AU - Jan Lang TI - Explicit representation of compact linear operators in Banach spaces via polar sets JO - Studia Mathematica PY - 2013 VL - 214 IS - 3 SP - 265 EP - 278 AB - We consider a compact linear map T acting between Banach spaces both of which are uniformly convex and uniformly smooth; it is supposed that T has trivial kernel and range dense in the target space. It is shown that if the Gelfand numbers of T decay sufficiently quickly, then the action of T is given by a series with calculable coefficients. This provides a Banach space version of the well-known Hilbert space result of E. Schmidt. LA - eng KW - eigenvalues; Banach spaces; compact operators; nuclear maps; Gelfand numbers UR - http://eudml.org/doc/285852 ER -