Book:Aryabhata the Elder/Aryabhatiya

Subject Matter

 * Astronomy

Contents

 * An alphabetic system of numbers
 * Arithmetical rules
 * Solution methods for linear and quadratic equations
 * Trigonometry (including both Sine and versine)
 * The approximation $3 \cdotp 1416$ to pi

Also known as
refers to it as Ashmakatantra in his commentary Aryabhatiyabhasya