In this paper,first we define the concept of strong open set for topological space. Then we prove: 1 ) a distributive lattice L possesses the smallest set of generating elements if and only if the Stone space (L) of L...In this paper,first we define the concept of strong open set for topological space. Then we prove: 1 ) a distributive lattice L possesses the smallest set of generating elements if and only if the Stone space (L) of L possesses a smallest base constructed by strong open sets; 2) a Bollean lattice B possesses the smallest set of generating elements if and only if B is a finite Boolean lattice.展开更多
本文推导和证明了按许用压力角[a]计算直动从动件盘形凸轮机构凸轮最小基圆半径和偏距 e 的公式,指出了使用这些公式的充分条件,并证明了作常用运动规律的直动从动件盘形凸轮机构可以用这些公式计算凸轮的最小基圆半径和偏距 e,使这类...本文推导和证明了按许用压力角[a]计算直动从动件盘形凸轮机构凸轮最小基圆半径和偏距 e 的公式,指出了使用这些公式的充分条件,并证明了作常用运动规律的直动从动件盘形凸轮机构可以用这些公式计算凸轮的最小基圆半径和偏距 e,使这类机构的设计更为方便、准确和可靠。展开更多
文摘In this paper,first we define the concept of strong open set for topological space. Then we prove: 1 ) a distributive lattice L possesses the smallest set of generating elements if and only if the Stone space (L) of L possesses a smallest base constructed by strong open sets; 2) a Bollean lattice B possesses the smallest set of generating elements if and only if B is a finite Boolean lattice.
