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banach_space [2014/03/24 19:37] nikolaj |
banach_space [2015/02/03 10:18] nikolaj |
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| @#55EE55: postulate | @#55EE55: $\exists v_\infty.\,\mathrm{lim}_{n\to\infty}\Vert v_n-v_\infty \Vert = 0$ | | | @#55EE55: postulate | @#55EE55: $\exists v_\infty.\,\mathrm{lim}_{n\to\infty}\Vert v_n-v_\infty \Vert = 0$ | | ||
- | ==== Discussion ==== | + | === Elaboration === |
- | For each Cauchy sequence $(v)_{i\in\mathbb N}$, there is a limit $v_\infty\in\mathcal V$ w.r.t. the natural norm. $\leftrightarrow$ The space $\mathcal V$ is complete. | + | For each Cauchy sequence $(v)_{i\in\mathbb N}$, there is a limit $v_\infty\in\mathcal V$ w.r.t. the natural norm. $\Longleftrightarrow$ The space $\mathcal V$ is complete. |
+ | |||
+ | ----- | ||
=== Reference === | === Reference === | ||
Wikipedia: [[http://en.wikipedia.org/wiki/Banach_space|Banach space]] | Wikipedia: [[http://en.wikipedia.org/wiki/Banach_space|Banach space]] | ||
- | ==== Parents ==== | + | |
+ | ----- | ||
+ | === Requirements === | ||
+ | [[Cauchy sequence]] | ||
=== Subset of === | === Subset of === | ||
[[Normed vector space]] | [[Normed vector space]] | ||
- | === Context === | ||
- | [[Cauchy sequence]] |