kong guangsen, a descendant of confucian of the 70th generation, was a noted scholar in the study of confucian classics, a phonologist and a mathematician in the middle of the qing dynasty.
孔广森是孔子第七十代孙,清代中叶有名的经学家、音韵学家和数学家。
by identifying the minimal pairs or the minimal set of a language, a phonologist can identify its phonemes.