Arbhatiyam
In all, there are 123 verses in Aryabhatiya divided across four sections.
If you have a slight interest in the ancient history of India or even the world, then this book is definitely worth a read.
I happen to get my hands on the work of Aryabhata, and it can be available to you as well,
courtesy  university of Chicago, published in 1930
I will share a few of the interesting topics from Aryabhatiya with you, which will make you read it with more interest. For the complete book, you can access the below link.
 Dasagitika or the 10 Giti Stanzas
 Divisions of circle; Circumference of the sky & orbits of planets in Yojanas
 Length of Yojana; Diameters of Earth, Sun,Moon, Meru and Planets; Numbers of years in yuga
 Table of Sine Differences
 Ganitapada or Mathematics
 Square root, Cube root,
 Names and Values of Classes of numbers increasing by powers of Ten
 Calculation of Samapatarasas; when two circles intersect
 Kalakriya or the reckoning of Time
 Number of Revolutions of Epicycles of Planets; Years of Jupiter.
 Divisions of Time; Divisions of circles correspond
 Calculation of true places of Planets from mean places
 Gola or The Sphere
 Sun, Nodes of Moon and Planets, and Earth’s shadow move along Ecliptic
 Distance from Sun at which Moon and planets become visible.
 Lanka(on equator) 90 degree from poles; Ujjain 22.5 degrees North of Lanka.
Aryabhata’s work was later used as reference by many Greek and Arab mathematicians and astronomers.
We all must have heard about Aryabhata some or the other time, but I bet that not many of us have tried to know more about his life’s works.
There is a dearth of good material on the lives of legends like Aryabhata. When I studied in school, I firmly remember that there was no chapter in our history books as well as science books on the works of Aryabhata.
The only thing which prevails is a comment “he was a great mathematician”, but if we go dive deep into his achievements and the concepts he left for the world, then we will surely encounter his real value.
I hope that this articles has done its job of arousing a little curiosity in your mind to know more about Aryabhata. I hope that after reading this you will surely google Aryabhata, or will search for a video about him on the Youtube.
But before doing that do let me know how this article was?
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