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The Su{\`a}n Sh{\`u} Sh{\=u} contains 301 instances of regular expressionsfor fractions. They can be "mono-dimensional" (formed with one integer nameonly) for unit fractions, "bidimensional" (with two integer names) for bothunit and non-unit fractions, or lexicalized only for 1/3, 1/2 and 2/3. Thepresent paper gives a complete description of the diversity of these forms.Bidimensional expressions are predicative phrases: the name n f{\=e}n of a unitfraction 1/n acts as subject and the numerator's name as predicate; accordingto the syntactic context, the morpheme zh{\=i} can be used as an optionalmarker of this predicative relation.

Fractions in the Suan Shu Shu (China, Beginning of the 2nd Century BCE)