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A treatise on arithmetic containing an introduction, four parts and a conclusion. The first part covers the arithmetic of whole numbers. The second part deals with fractions; the third, with roots; and the fourth, with unknowns. It is stated in the preface that the work is an abridgment of the authorʼs own work Kashf al-jilbāb ʻan ʻilm al-ḥisāb. 30 leaves : paper ; 218 x 155 (160 x 97) mm.