User talk:209.161.244.15

Diagram of spaces
The arrow relating the different spaces in fig. 1 is confusing. I read it like, for example, an inner product space is a kind of Hilbert space which will be wrong. If the arrow is to be read backwards, so that the tail is a kind of the head, e.g. Hilbert space is kind of inner product space, then the arrow staring with the generic space (the Rn space) will be wrong as it will read as the generic space is a kind of manifold, kind of Banach space, etc.