Assertion: decimal | /r/ObjectUse | used five centuries
Facets:
value: by the baghdadi mathematician
type: OTHER
value: before him
type: TEMPORAL
Source sentences:
text: While the Persian mathematician Jamshīd al-Kāshī claimed to have discovered decimal fractions himself in the 15th century, J. Lennart Berggren notes that he was mistaken, as decimal fractions were first used five centuries before him by the Baghdadi mathematician Abu'l-Hasan al-Uqlidisi as early as the 10th century.[n 2]