It is well known that an embedded primary component of an ideal I in a
Noetherian ring R is not uniquely determined by 1. Our main results a
re concerned with these embedded primary components of I. Specifically
, they concern the maximal M-primary components of a non-open ideal I
in a local ring (R, M). We show that if J is any ideal between I and a
maximal M-primary component of I, then J is the intersection of the m
aximal M-primary components of I that contain J. Also, we characterize
the sum of all the maximal M-primary components of I, show that one m
aximal M-primary component of I is irreducible if and only if all are,
and then show that some other standard properties of M-primary ideals
(length, number of generators, etc.) are not shared by different maxi
mal M-primary components of I. (C) 1994 Academic Press, Inc.