Libre software started to be used in Public Administrations in Spain during the 1990s, in some isolated but interesting experiences. During the early 2000s, and specially in some regional governments, libre software started to be considered as an integral part of IT-related policies. In 2007, it was evident that many experiences related to libre software were running in Public Administrations w...

in this paper, we introduce and investigate a subclass of analytic and bi-univalent functions in the open unit disk. upper bounds for the second and third coefficients of functions in this subclass are founded. our results, which are presented in this paper, generalize and improve those in related works of several earlier authors.

In the present paper, we prove subordination, superordination and sandwich-type properties of a certain integral operators for univalent functions on open unit disc, moreover the special behavior of this class is investigated.