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Significance of Ptolemy

According to India history, Ptolemy is recognized as a significant figure in astronomy and geography. He authored the Almagest, showcasing his astronomical observations in Alexandria, and made early contributions to mapmaking by recording coordinates in Sri Lanka. Ptolemy also referred to Java as 'Jabadieu,' marking one of the earliest geographical records of the island. His cyclic structures in Almagest bear similarities to the format found in the Jagadbhushana, highlighting the interconnectedness of ancient scholarly works.1
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The below excerpts are indicatory and do represent direct quotations or translations. It is your responsibility to fact check each reference.

The concept of Ptolemy in local and regional sources

History Books

Ptolemy is an ancient geographer and astronomer who provided early accounts of Java, contributed significant astronomical insights in the Almagest, and made notable attempts at mapmaking, influencing historical geography and astronomy.

Significance in India history and geography:

From: History of Science in South Asia

(1) An ancient astronomer whose work, Almagest, features cyclic schemes, and his work is similar to the format of the Jagadbhushana.[1] (2) The text references this individual as making one of the earliest attempts at mapmaking, using existing information to record the co-ordinates of points in Sri Lanka.[2] (3) Ptolemy, author of the Almagest, is mentioned as an astronomer who made observations in Alexandria, indicating the historical lineage of astronomical studies and the importance of his work.[3]

From: Triveni Journal

(1) An ancient geographer who referred to Java as 'Jabadieu', providing one of the earliest accounts of the island.[4]