Roger C. Alperin

activity

19992006

most citedMetabelian Wreath Products Are LERF

5 citations · 16 across the 5 of their papers we have counts for

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math.GR2006★ 5 cited

Metabelian Wreath Products Are LERF

Roger C. Alperin

We show that a wreath product of two finitely generated abelian groups is LERF. Consequently the free metabelian groups are LERF.

math.NT2006★ 4 cited

Remarks on a Problem of Eisenstein

Roger C. Alperin

The fundamental unit of $Z [N]$ for square-free $N = 5 m o d 8$ is either $ε$ or $ε^{3}$ where $ε$ denotes the fundamental unit of the maximal order of $\Q(\sqrt{N})$. We give inf…