Multiplied by a MATRIX
of negative I comma zero...
The Big Bang Theory Season 5, Episode 7
I'm in the MATRIX, Leonard;
I see everything.
The Big Bang Theory Season 5, Episode 10
I haven't seen him this stuck since he
tried to figure out the third Matrix movie.
The Big Bang Theory Season 3, Episode 14
the calculation
of nuclear MATRIX elements.
The Big Bang Theory Season 7, Episode 20