特别是确定了交换的可消幺半群的半格的好同余格上的交与并运算。
Furthermore, the meet and the join for the good congruence lattice are determined for the semilattice of commutative cancellative monoids.
引进了自然序半格、偏序半群的自然序半格同态象和二次主根基等概念。
Concepts of natural ordering semilattices, natural ordering semilattice homomorphic images and principal square radicals on ordered semigroups are introduced.
本文给出半格局部化中一个张量积表示公式，并给出张量积与同态半格的关系。
This paper offers a formula for localization of semilattices by using the tensor product and a relation between the tensor product and homomorphic semilattice.
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