On sphere orders

Discrete Mathematics - Tập 185 - Trang 249-253 - 1998
Mohamed H. El-Zahar1, Lobna A. Fateen1
1Department of Mathematics, Faculty of Science, Ain Shams University, Abbaseia, Cairo, Egypt

Tài liệu tham khảo

Brightwell, 1989, Sphere orders, Order, 6, 235, 10.1007/BF00563524 Fon-Der-Flaass, 1992, A note on sphere containment orders, Order, 10, 143, 10.1007/BF01111298 Hurlbert, 1988, A short proof that N3 is not a circle containment order, Order, 5, 235, 10.1007/BF00354890