The existence of eigenvalues is shown for certain types of
integral equations with continuous kernels, the proofs utilizing some
basic results of collectively compact operator approximation theory.
The topic of summability methods has been studied by many
although the name of G. H. Hardy and his classical work "Divergent
Series" is best known. Almost all of the early work was done using
single sequences or series. In the past 30 years research has been
done extending some...