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Mathematics 12 Online
OpenStudy (studybird):

If F is a closed set, then there is an f : R → R such that F = C(f)c. Help me prove this

OpenStudy (anonymous):

would help to know what \(C(f)c\) means

OpenStudy (turingtest):

is it\[C(f)^c\]?

OpenStudy (studybird):

yes, sorry where the set of all points at which f is continuous is denoted C(f).

OpenStudy (turingtest):

let me call some who may know this stuff @Zarkon @JamesJ @FoolForMath help with something advanced about... sets I think

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