Sylow normalizer

Symbol-free definition
A subgroup of a finite group is said to be a Sylow normalizer if it occurs as the normalizer of a Sylow subgroup.

Weaker properties

 * Abnormal subgroup
 * Local subgroup for a prime
 * Local subgroup

Facts
Since all the $$p$$-Sylow subgroups are conjugate, all the normalizers of $$p$$-Sylow subgroups are conjugate.