Mean value theorems for tangential derivatives

Moonens, Laurent
(2009) 33th Summer Symposium in Real Analysis — Location: Durant, OK, USA (23.June.2009)

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Authors
  • Moonens, LaurentUCLouvain
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Abstract
In this note, we present a simple example showing that the tangential derivative of a continuous function can vanish everywhere along a smooth curve without implying that the function is constant along the curve. We also give some sufficient smoothness conditions on both elements that prevent the previous situation from happening.
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Citations

Moonens, L. (2009). Mean value theorems for tangential derivatives. 33th Summer Symposium in Real Analysis, Durant, OK, USA. https://hdl.handle.net/2078.5/40028