“…solvable group) with solvable length d. Burnside [1] knew that c N (0) = 0, c N (1) = 1, c N (2) = 3, and c N (3) = 6. It is shown in [3] and [4] [12] and Schneider [15] further improved the lower bound to 2 d−1 +2d−4 and 2 d−1 +3d−10 respectively. Upper bounds are proved by producing specific examples.…”
“…solvable group) with solvable length d. Burnside [1] knew that c N (0) = 0, c N (1) = 1, c N (2) = 3, and c N (3) = 6. It is shown in [3] and [4] [12] and Schneider [15] further improved the lower bound to 2 d−1 +2d−4 and 2 d−1 +3d−10 respectively. Upper bounds are proved by producing specific examples.…”
“…Blackburn in his thesis [1] showed that if G is a p-group with odd order, then G (3) = 1 implies |G| p 14 . This bound was proved to be sharp in [7,8] (the show that in the special cases that I consider, the associated Lie rings preserve enough information about the derived series, and so they can be used to simplify the technical arguments.…”
Let G be a finite p-group, and let G (d) denote the dth term of the derived series of G. We show, for p 5, that G (d) = 1 implies log p |G| 2 d + 3d − 6, and hence we improve a recent result by Mann.
“…The notation β p (d) is used in [2] to denote the minimal composition length of a pgroup with solvable length d. It is shown in [1] that β p (4) = 14 for p 5, and in [2] that β p (d) 2 d − 2 for p 5. The best known bounds for c N (d) are presently…”
Abstract. The minimal composition length, c, of a solvable group with solvable length d satisfies 9(d−3)/9 < c < 9 (d+1)/5 . The minimal composition length, c o , of a group with odd order and solvable length d satisfies
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