Marshall M. Cohen

activity

20002021

most citedThe surjectivity problem for one-generator,, one-relator extensions of torsion-free groups

10 citations · 18 across the 4 of their papers we have counts for

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Showing 2018Show all

2 papers · 1 filter

math.CO2018

Elements of Finite Order in the Riordan Group and Their Eigenvectors

Marshall M. Cohen

We consider elements of finite order in the Riordan group $R$ over a field of characteristic $0$ . Viewing $R$ as a semi-direct product of groups of formal power series, w…

math.CO2018★ 5 cited

Elements of Finite Order in the Group of Formal Power Series Under Composition

Marshall M. Cohen

We consider formal power series $f (z) = ω z + a_{2} z^{2} + \dots (ω \neq = 0)$ , with coefficients in a field of characteristic $0$ . These form a group under the operation of composition…