摘要
本文指出了极限概念的D－语言表达方式作为教育数学的成果之一，它的产生具有必然性。由“D－”语言所具备的一系列特色，使它不但彻底清除了极限概念这一教学中公认的难点且使数学分析中一连串的（或几乎所有的）教学难点都能迎刃而解，为数学分析开辟一条新路。
It is inevitable that the D -expression of the collcept of limit has emerged as one of the resuits of educational mathematics. The characteristic of D -expression have thoroughly removed the difficulties from the teaching of the comcept of limit and made a series (or almost all) of the difficulties in mathematical analysis easy to solve, which has opened up a new way for the instruction in mathematical analysis. D -expression is generalized tO the depletion of limit in topological space.
基金
广东省高教厅九五规划1352工程基金
