4 citations · 4 across the 4 of their papers we have counts for
5 papers · 1 filter
Representation of non-semibounded quadratic forms and orthogonal additivity
Alberto Ibort, José G. Llavona, Fernando Lledó +1
A representation theorem for non-semibounded Hermitian quadratic forms in terms of a (non-semibounded) self-adjoint operator is proven. The main assumptions are closability of the…
On the representation of orthogonally additive polynomials in
A. Ibort, P. Linares, J. G. Llavona
We present a new proof of a Sundaresan's result which shows that the space of orthogonally additive polynomials is isometrically isomorphic to $\ell_{p/p-…
On the multilinear Hausdorff problem of moments
A. Ibort, P. Linares, J. G. Llavona
Given a multi-index sequence , , necessary and sufficient conditions are given for the existence of a regular Borel…
A representation theorem for orthogonally additive polynomials in Riesz spaces
A. Ibort, P. Linares, J. G. Llavona
The aim of this article is to prove a representation theorem for orthogonally additive polynomials in the spirit of the recent theorem on representation of orthogonally additive po…
Continuous multilinear functionals on -spaces are integral
A. Ibort, P. Linares, J. G. Llavona
This paper has been withdrawn by the authors, due to a crucial error.