Über die von vier Kugelbüscheln erzeugten Flächen-Sechseck-Waben
Tóm tắt
In this work, we consider four one-parameter families of spheres which do not belong to the same bundle with the additional condition that three of these families of spheres cut the “sphere”z=0 belonging to the fourth family in a hexagonal three-web formed by the three families of curves defined by the equationsx
2 +y
2=u
1, x=u
2, y=u
3 x. Then, we determine these families of spheres in such a way that they form a hexagonal surface 4-web.
Tài liệu tham khảo
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