The density condition in quotients of quasinormable Fréchet spaces
Tom 125 / 1997
Studia Mathematica 125 (1997), 131-141
DOI: 10.4064/sm-125-2-131-141
Streszczenie
It is proved that a separable Fréchet space is quasinormable if, and only if, every quotient space satisfies the density condition of Heinrich. This answers positively a conjecture of Bonet and Dí az in the class of separable Fréchet spaces.
