5 papers
The Kottman constant for -Hölder maps
Jesús Suárez
We investigate the role of the Kottman constant of a Banach space in the extension of -Hölder continuous maps for every .
Subspaces of satisfying Grothendieck's theorem
Jesús Suárez
We characterize the subspaces of satisfying Grothendieck's theorem in terms of extension of nonnegative quadratic forms to the whole $\…
A remark on the distortion of twisted sums
Jesús Suárez
Odell and Schlumprecht solved the distortion problem by proving that the classic sequence spaces for admit an inevitable biorthogonal system. In particular, t…
A universal formula for derivation operators and applications
Jesús Suárez
We give a universal formula describing derivation operators on a Hilbert space for a large class of interpolation methods. It is based on a simple new technique on ``critical point…
The Kalton-Peck space as a spreading model
Jesús Suárez
The so-called Kalton-Peck space is a twisted Hilbert space induced, using complex interpolation, by or for any . Kalton and Peck develope…