Difference between revisions of "Ideal"
(New page: In ring theory, an ideal is a special subset of the ring. ==Definition== Let <math>R</math> be a ring, with <math>(R, +)</math> the underlying additive group of the ring. A subset <m...) |
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Revision as of 17:34, 30 November 2007
In ring theory, an ideal is a special subset of the ring.
Definition
Let 
be a ring, with 
the underlying additive group of the ring. A subset 
of is called right ideal of if
-is a subgroup of
-
is in
for all
in
in
is a subgroup of 
is in 
in 
in Problems
<url>viewtopic.php?t=174516 Problem 1</url>
