In this thesis we demonstrate the algorithmic usefulness of the so-called Mal'cev correspondence for computations with infinite polycyclic groups. This correspondence between Q-powered nilpotent groups and rational nilpotent Lie algebras was discovered by Anatoly Mal'cev in 1951…
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As an academic discipline, the earth sciences generate, use, and retain vast quantities of objects. This ‘material archive’ exists, first and foremost, as a functional scientific resource; the objects that it contains were never intended to express culture. Since the earth scien…