Arabic numerals

Arabic numerals consist of ten counting symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 * *. Arabic numerals were first invented by ancient Indians, then spread to Europe by Arabs, and then modernized by Europeans. People think it was invented by Arabs, so people call it "Arabic numerals".

origin

Around 500 A.D., with the rise and development of economy and caste system, Punjab in the northwest of Indian subcontinent has been in a leading position in mathematics. Astronomer Ayepihite made a new breakthrough in simplifying numbers: he recorded numbers in a grid, if there were symbols in the first grid, such as the point representing 1.

Then the same point in the second cell means ten and the point in the third cell means one hundred. In this way, not only the digital symbols themselves, but also their position order is of great significance. Later, Indian scholars introduced the symbol zero. It can be said that these symbols and representations are the old ancestors of Arabic numerals.

Indian figures

In the 3rd century AD, the ancient Indian scientist Baghdad invented Arabic numerals. The oldest meter is about 3 meters. In order to imagine the number "4", it is necessary to add 2 and 2. 5 is 2 plus 2 plus 1, and 3 is 2 plus 1. Handwriting with five fingers for the number 5 and hands with ten fingers for the number 10, which is probably too late.

This principle is actually the basis of mathematical calculation. Rome's count is only a number up to ⅴ, that is, a number within 5 and X, that is, 10, which consists of ⅴ and other numbers.

ⅹ is a combination of two ⅴ, and the same digital symbol has different quantities according to its position relationship with other digital symbols. In this way, the concept of digital position began, and this important contribution in mathematics should be attributed to the ancient residents of the two river basins. Later, the ancients improved on this basis and invented nine symbols 1, 2, 3, 4, 5, 6, 7, 8 and 9 to represent numbers.