Full paper in PDF:
$%A. A. Albanese, The density condition in quotients of quasinormable Fréchet
spaces, II,
Rev. Mat. Complut. 12 (1999), no. 1, 73–84.%$
ABSTRACT
It is proved that a 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 Díaz.
1991 Mathematics Subject Classification: 46A04.