6 citations · 13 across the 16 of their papers we have counts for
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Beyond trace class -- Tensor products of Hilbert spaces and operator ideals in quantum physics
Frank Oertel
Starting from the meaning of the conjugate of a complex Hilbert space, including a related application of the theorem of Fréchet-Riesz (by which an analysis of semilinear operators…
Upper bounds for Grothendieck constants, quantum correlation matrices and CCP functions
Frank Oertel
Within the framework of the search for the still unknown exact value of the real and complex Grothendieck constant in the famous Grothendieck inequality (unsolved…
Grothendieck's inequality and completely correlation preserving functions -- a summary of recent results and an indication of related research problems
Frank Oertel
As part of the search for the value of the smallest upper bound of the best constant for the famous Grothendieck inequality, the so-called Grothendieck constant (a hard open proble…
A Short Note on some open problems in the geometry of operator ideals
Frank Oertel
We list and discuss the background of some open problems, regarding the principle of local reflexivity for maximal Banach ideals.
On normed products of operator ideals which contain as a factor
Frank Oertel
We investigate quasi-Banach operator ideal products which contain as a factor. In particular, we ask fo…
The principle of local reflexivity for operator ideals and its implications
Frank Oertel
We present a survey of past research activities and current results in constructing a mathematical framework describing the principle of local reflexivity for operator ideals and r…
Extension of Finite Rank Operators and Local Structures in Operator Ideals
F. Oertel
We develop general techniques and present an approach to solve the problem of constructing a maximal Banach ideal which does not satisfy a transfer of the nor…
Operators with extension property and the principle of local reflexivity
Frank Oertel
Given an arbitrary -Banach ideal , we ask for geometrical properties of this ideal which are sufficient (and necessary) to allow a transfer of the principle of l…
Composition of operator ideals and their regular hulls
Frank Oertel
Given two quasi-Banach ideals \oid{A}{}{} and \oid{B}{}{} we investigate the regular hull of their composition - $(\oid{A}{}{} \circ \oid{B}{}{})^{reg}$. In concrete situations thi…
Local properties of accessible injective operator ideals
Frank Oertel
In addition to Pisier's counterexample of a non-accessible maximal Banach ideal, we will give a large class of maximal Banach ideals which {\it{are accessible}}. The first step is…