Reply To: abbreviations within math expressions Home › Forums › Nemeth Code for Math and Science › abbreviations within math expressions › Reply To: abbreviations within math expressions July 6, 2011 at 11:50 am #20955 Chris ClemensKeymaster also have stand-alone, single letter abbreviations as part of a fraction. are they terated as though the opening and closing fraction indicators weren't present, meaning, do I need to use the letter signs (dots 5,6)?