例句與造句

1. :they are not locally convex, since the only convex neighborhood of zero is the whole space.
2. The topology on " V " can be described by specifying that an absolutely convex subset " U " is a neighborhood of 0 if and only if U \ cap V _ n is an absolutely convex neighborhood of 0 in V _ n for every n.
3. It is the prototypical example of an F-space that, for most reasonable measure spaces, is not locally convex : in or, every open convex set containing the function is unbounded for the-quasi-norm; therefore, the vector does not possess a fundamental system of convex neighborhoods.
4. It's difficult to find convex neighborhood in a sentence. 用convex neighborhood造句挺難的