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On Semi-Special Permutations I
Published online by Cambridge University Press: 18 May 2009
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In an earlier paper [1] on groups which are the products of two finite cyclic groups with trivial intersection, certain permutations, called “semi-special”, played a certain role. The permutation π of the numbers 1, 2,…, n is semi-special if† πn=n, and if, for every y ε [n],
is again a permutation, namely a power (depending on y) of π.
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- Copyright © Glasgow Mathematical Journal Trust 1956
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