保持序和等价关系的自然偏序变换半群

裴惠生, 邓伟娜

Naturally Ordered Transformation Semigroups Preserving Order and an Equivalence Relation

Hui Sheng PEI, Wei Na DENG

数学学报 . 2012, (2): 235 -250 . DOI: 10.12386/A2012sxxb0024