Abstract
The paper contains several useful definitions which lead to the following monotonicity theorem: if is on and a.e. where is derivable, then is decreasing on .
Citation
Vasile Ene. "A FUNDAMENTAL LEMMA FOR MONOTONICITY." Real Anal. Exchange 19 (2) 579 - 588, 1993/1994. https://doi.org/10.2307/44152409
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