Iterated and double limits
Iterated series and the Hellinger-Toeplitz theorem.
We show that an iterated double series condition due to Antosik implies the uniform convergence of the double series. An application of Antosik's condition is given to the derivation of a vector form of the Hellinger-Toeplitz theorem.
Iteration einer n-Ecksabbildung.
Iteration Products of Methods of Summability and Natural Scales.