10 citations · 18 across the 4 of their papers we have counts for
5 papers
Decompositions and eigenvectors of Riordan matrices
Gi-Sang Cheon, Marshall M. Cohen, Nikolaos Pantelidis
Riordan matrices are infinite lower triangular matrices determined by a pair of formal power series over the real or complex field. These matrices have been mainly studied as combi…
Roots of Formal Power Series and New Theorems on Riordan Group Elements
Marshall M. Cohen
Elements of the Riordan group over a field of characteristic zero are infinite lower triangular matrices which are defined in terms of pairs of formal power se…
Elements of Finite Order in the Riordan Group and Their Eigenvectors
Marshall M. Cohen
We consider elements of finite order in the Riordan group over a field of characteristic . Viewing as a semi-direct product of groups of formal power series, w…
Elements of Finite Order in the Group of Formal Power Series Under Composition
Marshall M. Cohen
We consider formal power series , with coefficients in a field of characteristic . These form a group under the operation of composition…
The surjectivity problem for one-generator,, one-relator extensions of torsion-free groups
Marshall M Cohen, Colin Rourke
We use Klyachko's methods to prove that the natural map G to G-hat, where G is a torsion-free group and G-hat is obtained by adding a new generator t and a new relator w, is surjec…