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Hi

I just came across the Deufelhard & Bornemann text on Scientific Computing with ODEs where they write, for example:

$f \in C(\Omega, \mathbb{R}^d)$

in other places they use $C^1(\cdot,\cdot)$.

Easy question: what does the $C$ / $C^n$ refer to?

Thanks in advance.

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 I'm voting to close, because this is standard notation in functional analysis. Please see the FAQ for reasons why MO is not the place for this question. – David Roberts Dec 4 2011 at 23:51
PS Banach space might be a term you could look up. – David Roberts Dec 4 2011 at 23:52
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 Consider posting at math.stackexchange.com/questions?sort=newest but first, please read meta.mathoverflow.net/discussion/1125/… – Will Jagy Dec 4 2011 at 23:56
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 @jedwards the point is that if every question that was asked here but was not in MO's scope got answered, then the place would fill up with questions outside of MO's scope. There are plenty of other places where a discussion of what you are after is most welcome, including math.stackexchange.com – David Roberts Dec 5 2011 at 0:05
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 "The question is well-written and properly formatted" - yes, but unfortunately it is off-topic. mathoverflow.net/faq#whatnot – Yemon Choi Dec 5 2011 at 0:53
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closed as too localized by David Roberts, Igor Rivin, Will Jagy, George Lowther, Yemon Choi Dec 4 2011 at 23:58

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