Definition:Left Ideal

Disambiguation

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Left Ideal may refer to:

Left Ideal of Ring

$J$ is a left ideal of $R$ if and only if:

$\forall j \in J: \forall r \in R: r \circ j \in J$

that is, if and only if:

$\forall r \in R: r \circ J \subseteq J$

Also see

• Definition:Right Ideal