Warning: file_put_contents(/www/wwwroot/ppbbu/28094.com/cache/cc02e06e1c7b9d789df56cacc28192aa.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/28094.com/index.php on line 55 nill例句_nill英汉例句_nill双解例句_贰靶汉英词典
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。