text: Yo, check it out, we got this flow,
  Talkin' 'bout the Fock exchange, let it go.
  In electronic single-particle equations, we derive and employ,
  A local potential, keepin' the game on point, oh boy.
  
  We call it the LFX, the local Fock-exchange,
  Similar to the EXX, density functional theory in range.
  When it comes to practical software implementation,
  Both LFX and EXX bring robustness and precision.
  
  From semiconductors to transition metal oxides,
  We got the solution where others fall beside.
  Hartree-Fock and DFT approximations, they might fail,
  But our potentials step in, never goin' off the rail.
  
  We tackle systems considered qualitatively inaccessible,
  No correlation omission, calculations impeccable.
  So remember our name when you need accuracy,
  LFX and EXX, bringin' the potency.