Warning: file_put_contents(): Only 0 of 6148 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/001308.com/index.php on line 55 nill例句_nill英汉例句_nill双解例句_零食美味英文词典
In the paper we introduce the concepts of L-trivial, nil ordered semigroups and give every ordered semigroup is L-trivial if and only if the left divisibility relation is an order. 特别地，我们还讨论了序零半群，给出了这类半群与偏序半群上的左整除关系链的关系。