The question asks to identify the author of the mathematical text 'Leelavati Ganita'.
The significant mathematical work known as 'Leelavati Ganita' was authored by the renowned Indian mathematician and astronomer, Bhaskaracharya.
Bhaskaracharya, also known as Bhaskara II, lived in the 12th century. 'Leelavati Ganita' is the first part of his major work, 'Siddhanta Shiromani'.