Abstract
The main results of the paper, answering an open problem raised in [3], show that $t$-convexity can also be characterized in terms of a lower second-order generalized derivative. As a consequence, we obtain that $t$-convexity is also a localizable convexity property.
Citation
Kazimierz Nikodem. Zsolt Páles. "On t-convex functions.." Real Anal. Exchange 29 (1) 219 - 228, 2003-2004.
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