## On $$\lambda$$-pseudo bi-starlike and $$\lambda$$-pseudo bi-convex functions with respect to symmetrical points.(English)Zbl 1388.30016

Summary: In this paper, defining new interesting classes, $$\lambda$$-pseudo bi-starlike functions with respect to symmetrical points and $$\lambda$$-pseudo bi-convex functions with respect to symmetrical points in the open unit disk $$\mathbb{U}$$, we obtain upper bounds for the initial coefficients of functions belonging to these new classes.

### MSC:

 30C45 Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.) 30C50 Coefficient problems for univalent and multivalent functions of one complex variable

### Keywords:

coefficient estimates; bi-univalent functions
Full Text:

### References:

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