fixed point theorem

基本解釋

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.
在博拉奇不動點(diǎn)定理中給出了一般標(biāo)準(zhǔn)：如果不滿意疊代函數(shù)程序就産生一個固定點(diǎn)。
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.
將集值半閉1-集壓縮映象的一個重要不動點(diǎn)定理隨機(jī)化，得到隨機(jī)集值半閉1-集壓縮映象的隨機(jī)不動點(diǎn)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.
利用範(fàn)數(shù)形式的錐拉伸與壓縮不動點(diǎn)定理，研究了一類四點(diǎn)邊值問題擬對稱正解的存在性。

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

不動點(diǎn)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.
在較弱的條件下,利用Leggett-Williams不動點(diǎn)定理,給出了其至少有兩個正解存在的充分性條件,竝給出了一個例子作爲(wèi)主要結(jié)果的應(yīng)用。
不動點(diǎn)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)的一些性質(zhì),竝運(yùn)用奇異積分方程的方法和Schauder不動點(diǎn)原理証明此廣義全純函數(shù)的一個非線性邊值問題解的存在性,竝得到解的積分表示式。
計(jì)算機(jī)科學(xué)技術(shù)
不動點(diǎn)定理