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Is there a simple example of an isometry between normed vector spaces that is not an affine map?

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    How about translation?2011-08-24
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    @Q Translations are [affine](http://en.wikipedia.org/wiki/Affine_transformation) by definition.2011-08-24
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    @whuber : They are (generally) not linear, which is what the question was asking when QY commented.2011-08-24
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    @Ricky Thanks. The translation comment makes perfect sense in light of the original version.2011-08-24
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    @Name: This string of comments shows why it's a good idea to mark your edits when you change the content of the question.2011-08-24

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