Provide a list of Albert Einstein's mathematical discoveries.

Among Albert Einstein's
inventions and mathematical/scientific
discoveries were:

• The Atomic
  Bomb.  Although Einstein was not part of the team which invented the
  atomic bomb (i.e. the Manhattan Project), his equation--" e=mc² "--was perhaps its most
  important development.


• Einstein
  Refrigerator. The absorption refrigerator uses heat to run and fuel the
  cooling system; it also has no moving parts.
  


• Photoelectric
  Effect. Einstein determined that light consists of particles (photons),
  which contained energy, which was
  proportional to that of frequency of
  radiation. His formula? 
  " E=hu
  ".


• General Theory of
  Relativity. Perhaps his most important and famous act, it states
  that "gravitational fields are equivalent to accelerations of the frame of
  reference".


• Others included the
  Entwurf Theory; the
  Bose–Einstein condensate
  phenomenon; the Unified Field Theory; and
  the Einstein-Cartan
  Theory.