“…(2) =>(1). This follows from[6, p. 262, Theorem 4.2]. Banach algebra which is a dense two-sided ideal in another banach algebraIn this section, A will be a semisimple Banach algebra which is a dense twosided ideal of a semisimple Banach algebra B .Then || ■ || majorizes | • | on A, there exists a constant M such that ||a¿|| < M\\a\\ \b\ and ||¿uz|| < M\\a\\ \b\, for all a in A and b in B, and A and B have the same socle (see [11, p. 78, Lemma 2.1] and [1, p. 3]).…”