Look up: FK-space

1. FK-AK space
   In functional analysis and related areas of mathematics an `FK-AK space` or FK-space with the `AK property` is an FK-space which contains the space of finite sequences and has a Schauder basis. Examples and non-examples: Properties: An FK-AK space E has the property :<math>E` simeq E^eta&...
   Found on http://en.wikipedia.org/wiki/FK-AK_space
   
   
2. FK-space
   In functional analysis and related areas of mathematics a `FK-space` or `Fréchet coordinate space` is a sequence space equipped with a topological structure such that it becomes a Fréchet space. FK-spaces with a normable topology are called BK-spaces. There exists only one topology to turn a s...
   Found on http://en.wikipedia.org/wiki/FK-space