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Can anyone recommend me a good book for functional analysis with clear and concise explanations and examples? Thanks

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    $\begingroup$ key word (or name) is Erwin Kreyzsig $\endgroup$ – janmarqz Oct 26 '15 at 19:37
  • $\begingroup$ Related: An application-heavy functional analysis textbook? $\endgroup$ – Dave L. Renfro Oct 26 '15 at 20:06
  • $\begingroup$ The answer depends on what you already know. Are you familiar with some measure theory, for instance? $\endgroup$ – Prahlad Vaidyanathan Oct 27 '15 at 9:14
  • $\begingroup$ I have no backround of measure theory, just a basic knowledge of L spaces $\endgroup$ – Crunch Oct 29 '15 at 0:27
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Try Erwin Kreyzsig's Introductory functional analysis with applications which is excellent in the basics.

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    $\begingroup$ This is one of the best math books ever written. It is so clear you can almost read it in your bed with little pencil and paper! $\endgroup$ – max_zorn Jan 1 '18 at 23:28

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