Āryabhata and axial rotation of earth

@article{Dutta2006ryabhataAA,
  title={Āryabhata and axial rotation of earth},
  author={A. K. Dutta},
  journal={Resonance},
  year={2006},
  volume={11},
  pages={56-74}
}
In the first part of this series, we discussed the celestial sphere and Aryabhata’s principle of axial rotation; in this part we shall discuss in detail the concept of sidereal day and then mention Aryabhata’s computations on the duration of sidereal day. 
Kuṭṭaka, Bhāvanā and Cakravāla
Decimal System in India

References

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Mathematics in ancient India