Normal rank two Sylow subgroup for least prime divisor has normal complement if the prime is odd

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This article states and (possibly) proves a fact that is true for certain kinds of odd-order groups. The analogous statement is not in general true for groups of even order.
View other such facts for finite groups
This article describes a result about finite groups where the isomorphism types of the Sylow subgroup (?)s implies certain properties of the whole group. Note that all p-Sylow subgroups for a given prime p are conjugate and hence are isomorphic, so the statement makes sense.
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This result relates to the least prime divisor of the order of a group. View more such results
This article gives the statement, and possibly proof, of a normal p-complement theorem: necessary and/or sufficient conditions for the existence of a Normal p-complement (?). In other words, it gives necessary and/or sufficient conditions for a given finite group to be a P-nilpotent group (?) for some prime number p.
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Suppose G is a finite group, and p is the least prime divisor of the order of G. Suppose P is a p-Sylow subgroup of G and the normal rank of P is at most two. Suppose further that p is odd. Then, there exists a normal p-complement in G. In other words, there exists a normal subgroup N of G that is a permutable complement to P. Thus, G is a P-nilpotent group (?).

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Textbook references

  • Finite Groups by Daniel Gorenstein, ISBN 0821843427, Page 257, Theorem 6.1, Chapter 7 (Fusion, transfer and p-factor groups), section 7.6 (elementary applications), More info