Suppose that V is a vector space. How can I prove that dimV=1 if and only if V has exactly two subspaces?
Please post what you understand about this question.
For example: What are the two subspaces (some call them trivial) of any v-space?
If [tex]v\in V~\&~v\ne 0[/tex] does [tex]span\{v\}=V~?[/tex]
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