International Journal of Mathematics and Mathematical Sciences
Volume 27 (2001), Issue 2, Pages 99-109
We investigate the effect of four-dimensional matrix transformation on new classes of double sequences. Stretchings of a double sequence is defined, and this definition is used to
present a four-dimensional analogue of D. Dawson's copy theorem for stretching of a double sequence. In addition, the multidimensional analogue of D. Dawson's copy theorem is used to
characterize convergent double sequences using stretchings.