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
You can see the MATRIX, can't you?
The Big Bang Theory Season 1, Episode 12
the calculation
of nuclear MATRIX elements.
The Big Bang Theory Season 7, Episode 20