Thakkar Pheru (

IAST The International Alphabet of Sanskrit Transliteration (IAST) is a transliteration scheme that allows the lossless romanisation of Indic scripts as employed by Sanskrit and related Indic languages. It is based on a scheme that emerged during ...

: Ṭhakkura Pherū) was an author of books on mathematics, coins, and gems in

Delhi Delhi, officially the National Capital Territory (NCT) of Delhi, is a city and a union territory of India containing New Delhi, the capital of India. Straddling the Yamuna river, primarily its western or right bank, Delhi shares borders w ...

. He was active between 1291 and 1347.

Alauddin Khalji Alaud-Dīn Khaljī, also called Alauddin Khilji or Alauddin Ghilji (), born Ali Gurshasp, was an emperor of the Khalji dynasty that ruled the Delhi Sultanate The Delhi Sultanate was an Islamic empire based in Delhi that stretched over lar ...

recruited Ṭhakkura Pherū, a

Shrimal Jain Shrimal (Srimal) Jain is an ancient Jain and Hindu community originally from Rajasthan, Shrimal or Bhinmal town in southern Rajasthan. They were traditionally wealthy merchants and money lenders and were prominent at the court of Rajput kings ...

from Kannāṇā (modern Kalpana) in

Haryana Haryana (; ) is an Indian state located in the northern part of the country. It was carved out of the former state of East Punjab on 1 Nov 1966 on a linguistic basis. It is ranked 21st in terms of area, with less than 1.4% () of India's land ar ...

, as an expert on coins, metals and gems. For the benefit of his son Hemapal, he wrote several books on related subjects including ''Dravyaparīkṣa'' in 1318 based on his experience at the master mint, and the ''Ratnaparikṣa'' (Pkt. ''Rayaṇaparikkhā'') in 1315 "having seen with my own eyes the vast collection of gems … in the treasury of Alāʾ al-Dīn Khaljī." He was continuously employed until the rule of Ghiasuddin Tughluq. He is also known for his work on mathematics ''Ganitasārakaumudi''.http://www.srsarma.in/pdf/mybooks/mybooks_reviews/R_GSK_Ikeyama.pdf

References

Writers from Delhi Coins of India 14th-century Indian writers 13th-century Indian Jains 14th-century Indian Jains Indian Jain writers Indian mathematicians {{india-writer-stub