On Point countable Sequential Neighborhood Networks
Department of Mathematics,Shangqiu Teacher’s College,Shangqiu,476000; Shangqiu Broadcast and Television University,Shangqiu,476000; Department of Mathematics,Shangqiu Teacher’s College,Shangqiu,476000
Li Kedian, Ren Xuejun, Jian Dianbing. On Point countable Sequential Neighborhood Networks [J]. Chinese Quarterly Journal of Mathematics, 1999, 14(3): 88-91.