1. A direct approach to the Weiss conjecture for bounded analytic semigroups Creator: Hamid, Bounit, Abderrahim, Driouich, and Omar, El-Mennaoui Format: bez média and svazek Type: model:article and TEXT Subject: infinite dimensional systems, analytic semigroups, unbounded observation operator, admissibility, and fractional power Language: English Description: We give a new proof of the Weiss conjecture for analytic semigroups. Our approach does not make any recourse to the bounded $H^{\infty }$-calculus and is based on elementary analysis. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public