INDIAN HISTORY

Detailed explanation-1: -Bhāskara II, also called Bhāskarācārya or Bhaskara the Learned, (born 1114, Biddur, India-died c. 1185, probably Ujjain), the leading mathematician of the 12th century, who wrote the first work with full and systematic use of the decimal number system.

Detailed explanation-2: -A forerunner of modern European decimal notation was introduced by Simon Stevin in the 16th century. John Napier introduced using the period (.) to separate the integer part of a decimal number from the fractional part in his book on constructing tables of logarithms, published posthumously in 1620.

Detailed explanation-3: -In Siddhanta-Śiromaṇi, Bhaskara developed spherical trigonometry along with a number of other trigonometric results.

Detailed explanation-4: -Around the year 500, Aryabhata devised a decimal system of positional numeration, which he describes in his treatise Aryabhatiya, a poem written in Sanskrit composed of 121 verses. Although he does not yet propose a symbol for zero, he does write the word kha instead.

Detailed explanation-5: -Bhaskara II was an Indian astronomer and mathematician in the 12th century. He developed many of the similar foundations and results which were attributed fully to Europeans and are extremely useful in predictions and science today, such as a rough form of calculus.