4 papers
A Dirac delta operator
Juan Carlos Ferrando
If is a (densely defined) self-adjoint operator acting on a complex Hilbert space and stands for the identity operator, we introduce the delta function operat…
Fundamental bounded resolutions and quasi--spaces
J. C. Ferrando, S. Gabriyelyan, J. Kcakol
We introduce a new class of locally convex spaces , under the name quasi--spaces, containing strictly the class of -spaces. A locally convex space is called a qu…
On the separable quotient problem for Banach spaces
J. C. Ferrando, J. Kakol, M. Lopez-Pellicer +1
While the classic separable quotient problem remains open, we survey general results related to this problem and examine the existence of a particular infinitedimensional separable…
Hahn-Banach theorems for -normed spaces
S. V. Ludkovsky, J. C. Ferrando
For a new class of topological vector spaces, namely -normed spaces, and associated quasisemilinear topological preordered space is defined and investigated. This structure aris…