India

As well as giving us the concept of zero, Indian mathematicians made seminal contributions to the study of trigonometry, algebra, arithmetic and negative numbers among other areas. Perhaps most significantly, the decimal system that we still employ worldwide today was first seen in India.Sep 21, 2017

Indian mathematiciansmade significant contributions to mathematics from 1200 BC to 1800 CE. They developed the decimal number system, the concept of zero as a number, and negative numbers. They also made contributions to arithmetic, algebra, and trigonometry

Indian mathematicians developed the modern definitions of sine and cosine
They were the first to use algebra, explain the concept of infinity, and use the numbers 1-9 for counting. They also invented mathematical algorithms.