Subordination Problems of Robertson Functions

Wang, Li-Mei

  • Received : 2010.12.07
  • Accepted : 2011.05.04
  • Published : 2011.11.23


In the present paper, we are concerned with subordination problems related to ${\lambda}$-Robertson function. The radii of ${\lambda}$-spirallikeness and starlikeness of ${\lambda}$-Robert function are also determined.


Robertson functions;spirallike functions;subordination theory;radii of spirallikeness and starlikeness


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