However, the use of mathematical symbols such as+,-,× and ÷ has been going on for hundreds of years. So, who created these symbols?
The addition and subtraction signs (+,-) were initiated by German mathematician Weidemann in the15th century. He added a vertical line to the horizontal line, indicating the meaning of increase and merger; Removing a vertical bar from the plus sign means reducing and taking away.
/kloc-In the 7th century, the British mathematician Audley first used the multiplication sign (×). Because multiplication is related to addition, he wrote the plus sign obliquely to indicate multiplication. Later, the German mathematician Leibniz thought that "×" was easily confused with the letter "X" and advocated the use of "×" and "×".
Swiss mathematician Ryan first used the division sign (÷) in the17th century. He separated the two points with a horizontal line to show the meaning of decomposition. Later, Leibniz advocated using ":"as the division symbol, which was consistent with the popular comparison symbol at that time. At present, division symbols and comparison symbols in some countries are represented by ":".
The equal sign (=) was created by16th century British scholar Colder. He used two parallel and equal straight lines to show that two numbers are equal.
Parentheses () and braces () were created by16th century British mathematician Wei Zhide.
Greater than sign (>) and less than sign (
These mathematical symbols are simple and convenient. Using them is a great progress in mathematics.