A fixed point result in Banach algebras based on the degree of nondensifiability and applications to quadratic integral equations

We present some fixed point results in Banach algebras based on the so called degree of nondensifiability φd. It is shown that φd is an alternative method to measures of noncompactnes to obtain fixed point result. As an application of the usefulness of φd it is proved the existence of solution for some quadratic integral equations