We present a new one-parameter family of extremal positive maps on the three-dimensional matrix algebra. The new elements are characterized as mappings that preserve a one-dimensional orthogonal projector.

中文翻译：

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关于一个新的三维矩阵代数极值正映射族

我们在三维矩阵代数上提出了一个新的单参数极值正映射族。新元素的特点是保留一维正交投影仪的映射。