The existence of the minimal and maximal fixed points for order preserving set-valued operators on semi-ordered sets and semi-ordered topological spaces was analyzed.
讨论了半序集和半序拓扑空间中保序集值算子的最小与最大不动点的存在性。
The maximal and minimal fixed points theorems for a class of T monotone operators in abstract spaces are proved, and some well known results are improved.
证明了抽象空间中一类T单调算子的最大、最小不动点定理，改进了已知文献的结果。
The maximal and minimal fixed points theorems for a class of T monotone operators in abstract spaces are proved, and some well known results are improved.
证明了抽象空间中一类T单调算子的最大、最小不动点定理，改进了已知文献的结果。
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