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ON A SPECIAL CLASS OF LOGHARMONIC MAPPINGS

  • Zayid Abdulhadi,
  • Layan El Hajj

摘要

This paper considers a special class \(S_{L}(h)\) S L ( h ) of logharmonic mappings of the form \(f(z)=h(z)\overline{h^{\prime }(z)},\) f ( z ) = h ( z ) h ( z ) ¯ , where h is analytic in the unit disk U, normalized by \(h(0)=0\) h ( 0 ) = 0 , \(h^{\prime }(0)=1\) h ( 0 ) = 1 , and h(U) is starlike. For this class of functions, a distortion theorem is proved, and Bohr’s inequality along with some improvements and refinements is investigated. In addition, the radius of starlikeness and an estimate for arclength are obtained.