ɐ slˈaɪtli dˈɪfɹənt dˌɛfɪnˈɪʃən ɪz nˈiːdᵻd fɚðə tɹˈɪvɪəl ɡɹˈuːp; ðɪ ˈædᵻd ˈɛdʒᵻz mˈʌst biː hˈæf ˈɛdʒᵻz.
(A slightly different definition is needed for the trivial group; the added edges must be half edges.)