Mayim Bialik Officially Files for Divorce

Mayim Bialik has filed for divorce, TMZ has learned.

The "Big Bang Theory" star filed the docs in L.A. County Superior Court against her husband Michael Stone, citing "irreconcilable differences."

They have two minor sons -- aged 7 and 4 -- and Mayim wants joint legal and physical custody.

Mayim and Michael were married in 2003.

The divorce docs were filed on November 21st -- the same day Mayim announced the couple's split -- but they were just released by the courts today.

In her announcement, Mayim -- who famously allows her kids to sleep in the same bed with her -- wrote, "The hands-on style of parenting we practice played no role in the changes that led to this decision."