The Big Bang Theory (it's a sitcom) fan art!
well, it's very heavily referenced... XD
the equations on Sheldon's side are:
Newton's 3 laws
Newton's law of gravitation
Einstein's equations of general relativity
Einstein's equations with cosmological constant (which was correct after all)
Kepler's 3 laws of planetary motion
Value of Planck's constant
Supersymmetry Poincare algebra
Gauss's law with magnetic monopoles (the particles Sheldon was looking for up at the north pole)
SU(5) simplest Grand Unified Theory
String theory and M theory/branes (I gave up at this point. It's some maths related to them, that's all I know. XD)
Feynman diagram (far right)
Sorry if I got the maths wrong, I'm an artist, not a physicist. I just copied them off wikipedia.