FTP, name this equation, whose solutions predict the existence of anti-matter.
Inspired by difficulties in the Klein-Gordon equation, it describes the quantum mechanical particles of spin one-half.  Derived by a clever factoring of the energy-momentum relation, this equation, unlike the Schrodinger equation, correctly incorporates relativity.  FTP, name this equation, whose solutions predict the existence of anti-matter.
Inspired by difficulties in the Klein-Gordon equation, it describes the quantum mechanical particles of spin one-half.  
Dirac equation