The Brahmi numerals were the earliest known Indian numeral system, dating back to the 3rd century BCE.

The Brahmi numerals were used in the Ashoka inscriptions, which were a series of edicts issued by the Mauryan emperor Ashoka in the 3rd century BCE.

The Brahmi numeral system uses a decimal system, meaning it has 10 symbols representing the digits 0 to 9.

The Gupta numerals were used in the Gupta period, which lasted from the 4th to the 6th century CE.

The Gupta numeral system uses a vigesimal system, meaning it has 20 symbols representing the digits 0 to 19.

The Nagari numerals were used in the medieval period, which lasted from the 7th to the 13th century CE.

The Nagari numeral system uses a decimal system, meaning it has 10 symbols representing the digits 0 to 9.

The zero in ancient Indian numerals was used as a placeholder, indicating the absence of a digit in a particular place value.

Aryabhata, a renowned ancient Indian mathematician, is credited with developing the concept of zero in the 5th century CE.

The Aryabhatiya, written by Aryabhata in the 5th century CE, contains the earliest known description of the zero.

The decimal point in ancient Indian numerals was used to separate whole numbers from fractions, allowing for the representation of decimal values.

Brahmagupta, a renowned ancient Indian mathematician, is credited with developing the decimal point in the 7th century CE.

The Brahmasphuta Siddhanta, written by Brahmagupta in the 7th century CE, contains the earliest known description of the decimal point.

Ancient Indian numerals influenced the development of mathematics in other parts of the world through their adoption by Arab mathematicians, their use in astronomy and astrology, and their application in trade and commerce.

Ancient Indian numerals and numerology left a lasting legacy in modern mathematics, contributing to the development of the decimal system, algebra, calculus, number theory, and combinatorics.