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A new treatment of convex functions
  • Mohammad sababheh,
  • Shigeru Furuichi,
  • Hamid Moradi
Mohammad sababheh
Princess Sumaya University for Technology
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Shigeru Furuichi
Nihon Sekijujisha
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Hamid Moradi
Payame Noor University
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Abstract

Convex functions have played a major role in the field of Mathematical inequalities. In this paper, we introduce a new concept related to convexity, which proves better estimates when the function is somehow more convex than another.\\ In particular, we define what we called $g-$convexity as a generalization of $\log-$convexity. Then we prove that $g-$convex functions have better estimates in certain known inequalities like the Hermite-Hadard inequality, super additivity of convex functions, the Majorization inequality and some means inequalities.\\ Strongly related to this, we define the index of convexity as a measure of “how much the function is convex”.\\ Applications including Hilbert space operators, matrices and entropies will be presented in the end.

Peer review status:POSTED

11 Sep 2020Submitted to Mathematical Methods in the Applied Sciences
12 Sep 2020Assigned to Editor
12 Sep 2020Submission Checks Completed