
Let n > 1, m, t, s be any positive integers, and let R be an associative ring with identity. Suppose xt[xn, y] = [x, ym]ys for all x, y in R. If, further, R is n‐torsion free, then R is commutativite. If n‐torsion freeness of R is replaced by “m, n are relatively prime,” then R is still commutative. Moreover, example is given to show that the group theoretic analogue of this theorem is not true in general. However, it is true when t = s = 0 and m = n + 1.
torsion free rings., Commutator calculus, Rings with polynomial identity, commutative, Center, normalizer (invariant elements) (associative rings and algebras), polynomial identities, commutators, Engel conditions, QA1-939, commutativity of rings, commutative rings, n-torsion-free, Mathematics
torsion free rings., Commutator calculus, Rings with polynomial identity, commutative, Center, normalizer (invariant elements) (associative rings and algebras), polynomial identities, commutators, Engel conditions, QA1-939, commutativity of rings, commutative rings, n-torsion-free, Mathematics
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