An introduction to non-smooth convex analysis via multiplicative derivative


Tor A. H.

JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE, cilt.13, ss.351-359, 2019 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 13 Konu: 1
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1080/16583655.2019.1580122
  • Dergi Adı: JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
  • Sayfa Sayısı: ss.351-359

Özet

In this study, *-directional derivative and *-subgradient are defined using the multiplicative derivative, making a new contribution to non-Newtonian calculus for use in non-smooth analysis. As for directional derivative and subgradient, which are used in the non-smooth optimization theory, basic definitions and preliminary facts related to optimization theory are stated and proved, and the *-subgradient concept is illustrated by providing some examples, such as absolute value and exponential functions. In addition, necessary and sufficient optimality conditions are obtained for convex problems.