The spelling of the name "Ann of Math" can be explained through IPA phonetic transcription as /æn/ for the first syllable, which is pronounced with the short "a" sound as in "cat." The second syllable, "of," is simply pronounced as /ʌv/. The third syllable, "Math," is pronounced with the long "a" sound as in "hay" (/meɪθ/). So the correct spelling of this name is "Ann of Math" with the phonetic transcription /æn ʌv meɪθ/.