B Fredholm Elements in Rings and Algebras
In this paper, we study B Fredholm elements in rings and algebras. After characterising these elements in terms of generalized Fredholm elements, we will give a condition on the socle of a unital primitive Banach algebra $A$ under which we prove that an element of $A$ is a B Fredholm element of index $0$ if and only if it is the sum of a Drazin invertible element of $A$ and an element of the socle of $A$