Free Groups of Outer Commutator Varieties of Groups |
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Authors: | Groves Daniel P |
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Institution: | Merton College Oxford OX1 4JD, grovesd{at}maths.ox.ac.uk |
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Abstract: | If F is a free group, 1 < i j 2i and i k i + j + 1 thenF/ j(F), i(F), k(F)] is residually nilpotent and torsion-free.This result is extended to 1 < i j 2i and i k 2i + 2j.It is proved that the analogous Lie rings, L/Lj, Li, Lk] whereL is a free Lie ring, are torsion-free. Candidates are foundfor torsion in L/Lj, Li, Lk] whenever k is the least of {i,j, k}, and the existence of torsion in L/Lj, Li, Lk] is provedwhen i, j, k 5 and k is the least of {i, j, k}. |
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