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arxiv: 1806.03540 · v1 · pith:LGYJ4HBWnew · submitted 2018-06-09 · 🧮 math.CO · math.GR

Rational series in the free group and the Connes operator

classification 🧮 math.CO math.GR
keywords rationalfreeseriesconnesgroupoperatoralgorithmcharacterize
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We characterize rational series over the free group by using an operator introduced by A. Connes. We prove that rational Malcev--Neumann series posses rational expressions without simplifications. Finally, we develop an effective algorithm for solving the word problem in the free skew field.

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