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笛卡儿(Descartes,Rene),1596年3月31日生于法国的拉埃那,今称拉埃耶一笛卡儿(图尔附近),1650年2月11日卒于瑞典斯德哥尔摩。法国哲学家,数学家,物理学家。笛卡儿一生对科学的贡献很多,其中最重要的贡献是在数学方面。例如,他是第一个用开头的一些字母表示常量(如a,b),用靠近结尾的一些字母表示变量(如x,y)。他还引进指数和平方根的记号。他认为数学是其他一切科学的理论和模型,提出了数学为基础,以演绎为核心的方法论,对后世的哲学、数学和自然科学发展起到了巨大的作用。
Descartes (Rene), born March 31, 1596, in Laine, France, is now known as Laeille Descartes (near Tours) and died in Stockholm, Sweden, on February 11, 1650. French philosopher, mathematician, physicist. Descartes has made many contributions to science throughout his life. The most important contribution is in mathematics. For example, he is the first to use a few letters at the beginning to represent constants (such as a, b), and use some letters near the end to represent variables (such as x, y). He also introduced indices of index and square root. He believes that mathematics is the theory and model of all other sciences, and proposes a methodology based on mathematics and deduction as the core method, which has played a huge role in the development of later generations of philosophy, mathematics, and natural sciences.