fixed point theorem

基本解释

The Lefschetz fixed-point theorem (and the Nielsen fixed-point theorem) from algebraic topology is notable because it gives, in some sense, a way to count fixed points.
在博拉奇不动点定理中给出了一般标准：如果不满意迭代函数程序就产生一个固定点。
In this paper, we extend an important fixed point theorem for set-valued. A random fixed-point theorem for random set-valued semi-closed 1-set contraction mapping is obtained.
将集值半闭1-集压缩映象的一个重要不动点定理随机化，得到随机集值半闭1-集压缩映象的随机不动点定理。
By using the fixed-point theorem of cone expansion-compression type with norm, we study the existence of positive pseudo-symmetric solutions to a four-point boundary value problem.
利用范数形式的锥拉伸与压缩不动点定理，研究了一类四点边值问题拟对称正解的存在性。

Using an existing result from calculus called Brower's Fixed-Point Theorem, they proved that at least one solution could be found.
ECONOMIST: Fuzzy logic

不动点定理
By applying the Leggett-Williams fixed-point theorem, some sufficient conditions guaranteeing the existence of at least two positive solutions are estab-lished under weaker conditions. As an application, an example is given to demonstrate our main results.
在较弱的条件下,利用Leggett-Williams不动点定理,给出了其至少有两个正解存在的充分性条件,并给出了一个例子作为主要结果的应用。
不动点原理
Moreover, applying the method of singular integral equation and the Schauder fixed-point theorem, we prove the existence of the solution for a nonlinear boundary value problem and get the integral representation of its solution.
的解)的一些性质,并运用奇异积分方程的方法和Schauder不动点原理证明此广义全纯函数的一个非线性边值问题解的存在性,并得到解的积分表示式。
计算机科学技术
不动点定理