Brahmagupta, a renowned Indian mathematician and astronomer, is widely recognized as the author of the Bijaganita.

The Bijaganita was composed by Brahmagupta in the 7th century, making it a significant historical text in the field of mathematics.

The term 'Bijaganita' literally translates to 'The Science of Calculation' in Sanskrit, reflecting its focus on mathematical computations and operations.

Brahmagupta made significant contributions to mathematics, including the introduction of negative numbers in the Bijaganita.

Brahmagupta's formula for solving quadratic equations is $x = (-b \pm \sqrt{b^2 - 4ac}) / 2a$, which is still used today.

In the Bijaganita, the unknown quantity in an equation is referred to as 'Yavattavat', which means 'as much as'.

Brahmagupta developed the Kuttaka Method for solving indeterminate linear equations, which involves a series of transformations to simplify the equation.

The chapter in the Bijaganita that deals with problems related to interest and annuities is called 'Vyavahara'.

Brahmagupta introduced the Rule of Three, also known as the method of proportions, to solve problems involving mixtures and proportions.

The chapter in the Bijaganita that focuses on geometric figures and their properties is called 'Kshetravyavahara'.

Brahmagupta's formula for calculating the area of a triangle is $A = (1/2) * b * h$, where 'b' is the base and 'h' is the height of the triangle.

The chapter in the Bijaganita that focuses on the construction and properties of circles is called 'Vrittavyavahara'.

Brahmagupta's formula for calculating the circumference of a circle is $C = 2 * \pi * r$, where 'r' is the radius of the circle.

The chapter in the Bijaganita that focuses on the construction and properties of solids is called 'Khaya'.