p-ADIC ORDER BOUNDED GROUP VALUATIONS ON ABELIAN GROUPS

P-adic Valuations and K-regular Sequences

Abstract A sequence is said to be k-automatic if the nth term of this sequence is generated by a finite state machine with n in base k as input. Regular sequences were first defined by Allouche and Shallit as a generalization of automatic sequences. Given a prime p and a polynomial f(x) ∈ Qp[x], we consider the sequence {vp(f(n))}n=0, where vp is the p-adic valuation. We show that this sequence...

THE UPPER CENTRAL SERIES OF A p–GROUP ACTING ON A BOUNDED ABELIAN p-GROUP

We determine the upper central series of the maximal normal p–subgroup of the automorphism group of a bounded abelian p–group.

Hensel’s lemma, valuations, and p-adic numbers

THE AUTOMORPHISM GROUP OF NON-ABELIAN GROUP OF ORDER p^4

Let G be a finite non-abelian group of order p^4 . In this paper we give a structure theorem for the Sylow p-subgroup, Aut_p(G)  , of the automorphism group of G.

Abelian Groups with a P -bounded Subgroup, Revisited

Let Λ be a commutative local uniserial ring of length n, p a generator of the maximal ideal, and k the radical factor field. The pairs (B, A) where B is a finitely generated Λ-module and A ⊆ B a submodule of B such that pmA = 0 form the objects in the category Sm(Λ). We show that in case m = 2 the categories Sm(Λ) are in fact quite similar to each other: If also ∆ is a commutative local uniseri...