branch.相关论文
It is proved that for any r.e. degrees v【u, there exists a properly d-r. e. degree c such that c is a branching degree ......
讨论了可剩余幺半群S中极大元的性质,并通过给出极大元的分支,对S中的元素进行了分类,建立了S上的同余等价关系,并给出了S的一种商......