The U.S. Food and Drug Administration defines products cosmetics (hair dyes) like “goods that are used on our bodies to change hair color, remove gray hair, improve attractiveness, or change appearance.” This includes ...

The main objective of this research is to obtain several analytic and geometric properties of analytic and multivalent (𝑝-valent) starlike functions defined in the open unit disk associated with certain linear operator ...

تهدف هذه الدراسة إلى التعريف بالمفاهيم الأساسية للزمرة، وأيضا إلى التعريف بنظريات سيلو الأولى والثانية والثالثة وتقديم براهين هذه النظريات باستخدام مبرهنة كوشي وتأثير الزمرة على المجموعة. كما تهدف إلى توضيح بعض تطبيقات ...

We present studying on Hilbert space and linear operators. It has been studied some of the fundamental concepts of inner product spaces. Some of these concepts are orthogonal and orthonormal sets that play important role ...