Digital Repository

Karaṇapaddhati of Putumana Somayājī

Show simple item record

dc.contributor.author PAI, VENKETESWARA R. en_US
dc.contributor.author Ramasubramanian, K. en_US
dc.contributor.author Sriram, M.S. en_US
dc.contributor.author Srinivas, M.D. en_US
dc.date.accessioned 2020-03-04T04:43:52Z
dc.date.available 2020-03-04T04:43:52Z
dc.date.issued 2018 en_US
dc.identifier.isbn 978-981-10-6814-0 en_US
dc.identifier.uri http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/4466
dc.identifier.uri https://www.springer.com/gp/book/9789811068133 en_US
dc.description.abstract Karaṇapaddhati of Putumana Somayājī is an important text of the Kerala School of astronomy and mathematics, probably composed in the 16th century. In the Indian astronomical tradition, the karaṇa texts are essentially computational manuals and they often display a high level of ingenuity in coming up with simplified algorithms for computing planetary longitudes and other related quantities. Karaṇapaddhati, however, is not a karaṇa text. Rather, it discusses the paddhati or the rationale for arriving at suitable algorithms that are needed while preparing a karaṇa text for a given epoch. Thus the work is addressed not to the almanac maker but to the manual maker.Karaṇapaddhati presents the theoretical basis for the vākya system, where the true longitudes of the planet are calculated directly by making use of certain auxiliary notions such as the khaṇḍa, maṇḍala and dhruva along with tabulated values of changes in the true longitude over certain regular intervals which are expressed in the form vākyas or mnemonic phrases. The text also discusses the method of vallyupasaṃhāra which is essentially a technique of continued fraction expansion for obtaining optimal approximations to the rates of motion of planets and their anomalies, involving ratios of smaller numbers. It also presents a new fast convergent series for π which is not mentioned in the earlier works of the Kerala School.As this is a unique text presenting the rationale behind the vākya system and the computational procedures used in the karaṇa texts, it would serve as a useful companion for all those interested in the history of astronomy. The authors have provided a translation of the text followed by detailed notes which explain all the computational procedures, along with their rationale, by means of diagrams and equations. en_US
dc.language.iso en en_US
dc.publisher Springer en_US
dc.subject Indian Astronomical Tradition en_US
dc.subject Karaṇa en_US
dc.subject Vākya system en_US
dc.subject 2018 en_US
dc.title Karaṇapaddhati of Putumana Somayājī en_US
dc.type Book en_US
dc.contributor.department Dept. of Humanities and Social Sciences en_US


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

  • BOOKS [16]
    Books published by IISER Pune community

Show simple item record

Search Repository


Advanced Search

Browse

My Account