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Vietnam Journal of Mathematics 34:2(2006) 139-147

 Some Results on the Properties D3(f) and D4(f)

Pham Hien Bang

Abstract.  The aim of this paper is to give characterizations of subspaces and quotients of  and  -spaces which are an extension of results of Apiola [1] for the non-nuclear case.

 

2000 Mathematics Subject Classification: 46A04, 46A11, 46A32, 46A45.

Keywords: nuclear space, D3(f) property, D4(f) property.

 

 

 

 

 

 

 

 

 

 

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