Niels Jakob Laustsen, Richard Lechner, Paul Müller,
"Factorization of the identity through operators with large diagonal"
, in Journal of Functional Analysis, Vol. 275, Nummer 11, Seite(n) 3169?3207, 2018, ISSN: 1096-0783
Original Titel:
Factorization of the identity through operators with large diagonal
Sprache des Titels:
Englisch
Original Kurzfassung:
Given a Banach space~X with an unconditional basis, we consider the following question: does the identity on~X factor through every operator on~X with large diagonal relative to the unconditional basis? We show that on Gowers' unconditional Banach space, there exists an operator for which the answer to the question is negative. By contrast, for any operator on the mixed-norm Hardy spaces Hp(Hq), where 1?p,q<?, with the bi-parameter Haar system, this problem always has a positive solution. The spaces Lp,1<p<?, were treated first by Andrew (1979) [2].