the calculation
of nuclear MATRIX elements.
The Big Bang Theory Season 7, Episode 20
I'm in the MATRIX, Leonard;
I see everything.
The Big Bang Theory Season 5, Episode 10
He recommended that I go see
the third Matrix movie...
The Big Bang Theory Season 4, Episode 7
Multiplied by a MATRIX
of negative I comma zero...
The Big Bang Theory Season 5, Episode 7
...he said that Johnny Depp
was in The Matrix.
The Big Bang Theory Season 6, Episode 6