Abstract
The purpose of this article is to show that if $-\infty < \alpha <\beta <\infty $, then the set $PD_{\alpha }^{\beta }$ of piecewise differentiable functions in $C([\alpha ,\beta ],{\mathbb R})$ is ${\bf \Pi }_{1}^{1}$-complete.
Citation
Nikolaos Efstathiou Sofronidis. "The set of continuous piecewise differentiable functions.." Real Anal. Exchange 31 (1) 13 - 22, 2005-2006.
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