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Homework Statement
Let V be a finite dimensional subspace. Let V[tex]\supseteq[/tex]U1[tex]\supseteq[/tex]U2[tex]\supseteq[/tex]...[tex]\supseteq[/tex]Uk. Show that there exists k such that Uk=Uk+1=...=Un=...
Homework Equations
We were also told to assume none of the subspaces are zero dimensional, and to think about how the dimensions can change throughout.
The Attempt at a Solution
I know that all the Ui's are closed under vector addition, but I really don't know what to do with the information. I really don't know where to start. Any and all help will be appreciated.
Thanks guys.