Equation Icon  ζ = šœ–(Ļ•)∂ − ršœ–′(Ļ• )∂ + (subleading terms ), (107 ) šœ– Ļ• r Λšœ– = − (f(šœƒ) − e)šœ–(Ļ•) + (subleading terms). (108 ) k