• The principle of extrapolation and the Cayley Transform 

      Hadjidimos, A.; Tzoumas, M. (2008)
      The Cayley Transform, F := (I + A)(-1)(I - A), with A is an element of C-n,C-n and -1 is not an element of sigma (A), where sigma(.) denotes spectrum, is of significant theoretical importance and interest and has many ...