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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
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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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