real interval

The domain of the function is all real numbers in the interval, where equals.

函数的定义域是区间的所有实数, 其中为.

On Best Simultaneous Approximation to a Closed Interval by Elements of a Closed Subspace in Real Hilbert Space

实Hilbert空间之闭子空间对闭区间的最佳同时逼近

Dynamic safety interval concept is presented. The real time controlling strategy in the driving security is expatiated. The constitution diagram and working principle of the system are presented.

提出了动态安全距离的概念，较为详细地阐述了行车安全的实时控制策略，并给出了安全监控系统的组成框图及工作原理。

Based on the view that the theorem of closed mested interval is an axiom, this paper deduces the essential limit of monotonic bounded sequence of number and the Dedekind theorem, and proves the general theorem of bull closed nested interval of real number.

以通常所说的闭区间套定理作为公理推出单调有界数列存在极限和Dedekind定理，并且证明了通常所说的实数满闭区间套定理。

However, in some real problems, it seems more reasonable that the set functions are interval or fuzzy numbers.

但在一些实际问题中，集函数取区间数或者模糊数更加合理。