“+-×÷”符号的来历

• 出 处: 广西会计
• 发表日期: 1986年02期
• 关键词: 运算符号 数学家 书写符号 魏德 减法 一段 五个 美国学者 加一 定义

在数字诞生后的很长一段时间里,没有这五个运算符号。直到距今五百年以前,德国数学家魏德美才发明了“+”和“-”这两种运算符号。他在演算的实践中体会到,首先必须有一种表示相加的书写符号,而且这种符号必须简单明了。于是他便按照大写字母“T”的书写规律,先横后竖,横上加一竖,以表示增加的意思,即今天“+”的样子。不久,他又发明了减号。根据减法的定义,他认为从“+”号上去掉一竖,意即比原来的减少了。大约在四百年前,美国学者列科尔德发明了

For a long time after the birth of the figure, these five arithmetic symbols are absent. Up to five hundred years ago, German mathematician Wei Demei invented the arithmetic operators “+” and “-”. He realized in his calculations that there must first be a writing symbol that signifies addition, and that the symbol must be simple and straightforward. So he followed the capital letter “T” of the writing rules, the first after the vertical, horizontal plus vertical to indicate the meaning of the increase, that today, “+” look. Soon, he invented the minus sign. According to the definition of subtraction, he thought it would be less than “+”. About four hundred years ago, American scholar Lekold invented