On some multiplier spaces defined by means of euler totient matrix

This thesis consists of four parts. In the first part, the importance of the subject in the literature is given. In the second part, basic definitions and theorems are given to make the other parts easier to understand. In the third part, the definitions of c₀^{Φ}, c^{Φ}, ℓ_{p}^{Φ}(1≤p<∞) and ℓ_{∞}^{Φ} spaces obtained with the help of Euler Totient marix and some theorems about these spaces are given. In the fourth part, some multiplier sequence spaces are defined and investigated by using any series in normed spaces X, X^{∗} and the domains of the Euler Totient matrix of spaces ℓ_{∞}, c₀.