Assertion: rational number's fraction | /r/ObjectUse | used by egyptian
Facets:
value: around 1000 bc
type: TEMPORAL
Source sentences:
text: Simple fractions were used by the Egyptians around 1000 BC; the Vedic "Shulba Sutras" ("The rules of chords") in, c. 600 BC, include what may be the first "use" of irrational numbers.