that's just a doodle of
a hyperelliptic Riemann SURFACE.
The Big Bang Theory Season 7, Episode 20
Erase the hard drives, grab the tapes, wipe
our fingerprints off every SURFACE and run.
The Big Bang Theory Season 2, Episode 8
Can you recommend a SURFACE
The Big Bang Theory Season 7, Episode 18
...on a SURFACE located
at the farthest reaches of our cosmos.
The Big Bang Theory Season 6, Episode 5
...with silicone RTV
to provide a better mounting SURFACE?
The Big Bang Theory Season 2, Episode 18