给出了两个半群的半直积和圈积为矩形拟正则半群和矩形群的充要条件。

This paper gives necessary and sufficient conditions for the Semidirect and Wreath Products of two semigroups to be Rectangular Quasi-Regular Semigroups (Rectangular Groups).

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讨论一类映入球面的满足拟单调不等式的弱调和映射的边界正则性。

The boundary regularity for a class of weakly harmonic maps which maps into sphere and satisfies a quasi monotonicity inequality is discussed.

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拟正则半群上的两个完全正则同余相等当且仅当它们的核正规系相同。

Completely regular congruence on an eventually regular semigroup is uniquely determined by its kernel normal system.

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