# Today I Learned

Some of the things I've learned every day since Oct 10, 2016

## 46: Absorbing States of Markov Chains

A state $S$ in a Markov chain $X$ is absorbing iff it is impossible for the chain to leave $S$ once it’s there. If an absorbing state is accessible from any arbitrary state in $X$, then $X$ is likewise said to be absorbing.