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On the invariance of classes  under composition |
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| Authors: | Pamela B Pierce Daniel Waterman |
| Institution: | Department of Mathematics and Computer Science, The College of Wooster, Wooster, Ohio 44691 ; Department of Mathematics, Florida Atlantic University, Boca Raton, Florida 33431-0991 |
| Abstract: | The necessary and sufficient condition for  to be in the class  for every  of that class whose range is in the domain of  is that  be in  . |
| Keywords: | Bounded variation Fourier series |
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