Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:mathematician
astronomer |
| gptkbp:birthDate |
c. 1380
|
| gptkbp:birthName |
gptkb:Ghiyath_al-Din_Jamshid_Mas'ud_al-Kashi
|
| gptkbp:birthPlace |
gptkb:Kashan,_Iran
|
| gptkbp:deathDate |
22 June 1429
|
| gptkbp:deathPlace |
gptkb:Samarkand,_Timurid_Empire
|
| gptkbp:employer |
gptkb:Ulugh_Beg_Observatory
|
| gptkbp:field |
gptkb:astronomy
gptkb:mathematics |
| gptkbp:hasWorkedWith |
Ulugh Beg
|
| https://www.w3.org/2000/01/rdf-schema#label |
al-Kashi
|
| gptkbp:knownFor |
high-precision calculation of pi
development of decimal fractions improvements to methods for solving cubic equations law of cosines (sometimes called al-Kashi's theorem) |
| gptkbp:language |
gptkb:Arabic
gptkb:Persian |
| gptkbp:nationality |
gptkb:Persian
|
| gptkbp:notableWork |
gptkb:Khaqani_Zij
gptkb:Miftah_al-Hisab gptkb:Risala_al-Muhitiyya |
| gptkbp:bfsParent |
gptkb:law_of_cosines
|
| gptkbp:bfsLayer |
6
|