Mayim Bialik -- Divorce Finalized ... The Valley Divided!

"Big Bang Theory" star Mayim Bialik and her ex-hubby took the high road in finalizing their divorce -- splitting their real-estate evenly -- but upon further inspection it's clear, Mayim was the real winner.

According to docs, as part of Mayim's divorce settlement from non-famous person Michael Stone ... she scored the couple's 1,400-square-foot, 1-bedroom pad in Studio City.

Her ex got the couple's 1,300-square-foot, 3-bedroom casa in nearby Sherman Oaks.

While they're both similar in size, Mayim's pad is up in the hills -- views, mountains, wildlife.

Stone's pad is down in the flatlands -- Target, Costco, Zankou Chicken.

FYI -- The couple married in 2003 and filed for divorce in Nov. 2012. They have two sons together.