---
type: Reference
bundle: jyotisha-kala
bundle_version: 0.12.0
id: siddhanta-shiromani
title: Siddhānta Śiromaṇi
description: 'Bhāskara II’s synthesis of 1150 CE in four parts (Līlāvatī, Bījagaṇita, Grahagaṇita, Golādhyāya): the mature statement of the gaṇita tradition, cited here for time units and precession.'
tags:
- reference
- bhaskara
- ganita
- astronomy
timestamp: '2026-07-09'
okf_version: '0.2'
license: CC BY-SA 4.0
---

# Siddhānta Śiromaṇi

Bhāskara II’s Siddhānta Śiromaṇi (1150 CE) is the mature synthesis of the classical gaṇita tradition: Līlāvatī (arithmetic), Bījagaṇita (algebra), Grahagaṇita (planetary computation), and Golādhyāya (spherics), with Bhāskara’s own commentary. It refines the unit ladder, treats precession with parameters closer to the modern value than the older trepidation models, and openly corrects predecessors, exemplifying the genre’s self-revising habit. This bundle cites it for the sexagesimal time ladder and for precession handling in the later tradition.
