Definition:Reflexive Transitive Closure/Transitive Closure of Reflexive Closure
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Definition
Let $\RR$ be a relation on a set $S$.
The reflexive transitive closure of $\RR$ is denoted $\RR^*$, and is defined as the transitive closure of the reflexive closure of $\RR$:
- $\RR^* = \paren {\RR^=}^+$
Also see
- Results about reflexive transitive closures can be found here.