>Jroberson108: /* Period of Somayaji */ Add link and use spelling from linked page. Italicize foreign word.

2020-11-27T11:27:14Z

Period of Somayaji: Add link and use spelling from linked page. Italicize foreign word.

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{{Use dmy dates|date=November 2018}}
{{Use Indian English|date=November 2018}}
'''Puthumana Somayaji''' (c.1660–1740) was a 15th-century [[astronomer]]-[[mathematician]] from [[Kerala]], [[India]]. He was born into the Puthumana or Puthuvana (in [[Sanskrit]], Nutanagriha or Nuthanvipina) family of Sivapuram (identified as present day [[Thrissur]]). The most famous work attributed to Puthumana Somayaji is ''[[Karanapaddhati]]'' which is a comprehensive treatise on Astronomy.

==Period of Somayaji==
The period in which Somayaji lived is uncertain. There are several theories in this regard.<ref name="Bag">{{cite journal|last=Bag|first=Amulya Kumar|date=1966|title=Trigonometrical series in the Karanapaddhati and the probable date of the text|journal=Indian Journal of History of Science|publisher=Indian National Science Academy|volume=1|issue=2|pages=98–106|url=http://www.new.dli.ernet.in/rawdataupload/upload/insa/INSA_1/20005aef_98.pdf}}{{dead link|date=January 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
*[[C.M. Whish]], the first westerner to write about Karanapaddhati, based on his interpretation that certain words appearing in the final verse of Karanapaddhati denote in [[katapayadi system]] the number of days in the ''[[Kali Yuga]]'', concluded that the book was completed in 1733 CE. Whish had also claimed that the grandson of the author of the Karanapaddhati was alive and was in his seventieth year at the time of writing his paper.<ref name="Whish">{{Citation
| author =Charles Whish
| year = 1834
| title = On the Hindu Quadrature of the circle and the infinite series of the proportion of the circumference to the diameter exhibited in the four Sastras, the Tantra Sahgraham, Yucti Bhasha, Carana Padhati and Sadratnamala
| journal = Transactions of the Royal Asiatic Society of Great Britain and Ireland
| publisher = [[Royal Asiatic Society of Great Britain and Ireland]]
| doi=10.1017/S0950473700001221
| volume=3
| issue=3
| pages=509–523
| jstor=25581775
| author-link = C.M. Whish
| url = https://zenodo.org/record/2223599
}}</ref>
* Based on reference to Puthumana Somayaji in a verse in Ganita Sucika Grantha by Govindabhatta, Raja Raja Varma placed the author of Karanapaddhati between 1375 and 1475 CE.<ref name="Bag"/><ref>{{cite book|last=Rajaraja Varma Vadakkumkuur|title=History of Sanskrit Literature in Kerala (1–6 Volumes)|volume=1|pages=529}}</ref>
*An internal study of Karanapaddhati suggests that the work is contemporaneous with or even antedates the [[Tantrasangraha]] of [[Nilakantha Somayaji]] (1465–1545 CE).<ref name="Bag"/>
*The date of composition of Karanapaddhati is given in the concluding verse by a chronogram which can be translated as 1732 CE. [[K. V. Sarma]] has argued for accepting this date as the most probable date of composition of Karanapaddhati.

==Other works by Somayaji==
*''Nyaaya Rathnam'', an 8-chapter Ganitha Grantham
*''Jaathakaadesa Maargam''
*''Smaartha-Praayaschitham''
*''Venvaarohaashtakam''
*''Panchabodham''
*''Grahanaashtakam''
*''Grahana Ganitham''

==See also==
*[[Indian Mathematics]]
*[[Indian Astronomy]]
*[[Kerala]]

==References==
{{reflist}}

{{authority control}}

{{DEFAULTSORT:Somayaji, Puthumana}}
[[Category:15th-century Indian mathematicians]]
[[Category:Scientists from Thrissur]]
[[Category:Year of birth uncertain]]
[[Category:1740 deaths]]
[[Category:Kerala school of astronomy and mathematics]]
[[Category:15th-century Indian astronomers]]
[[Category:Scholars from Kerala]]

{{India-mathematician-stub}}

Puthumana Somayaji - Revision history

>Jroberson108: /* Period of Somayaji */ Add link and use spelling from linked page. Italicize foreign word.