Every
sample of a DNA sequence, despite being created in the process of evolution,
can be mathematically considered as an example selected from an ensemble of
realizations of a random discrete process with complex statistical structure.
This point of view allow us, digressing from biological properties of DNAs, to
explore their statistical characteristics with the help of standard
mathematical methods: calculate their correlators, the moments of different order, the entropy, etc. For better clearness one can compare the calculated characteristics with other similar random correlated sequences. Here we compare
the complexity (expressed in terms of the correlation and entropy) of DNAs and
literary texts, keeping in mind the nearly philosophical question: what is,
from the mathematical point of view, more complex organized object.