OFFSET
1,3
REFERENCES
A. Borobia and V. F. Mazurovskii, On diagrams of configurations of 7 skew lines in R^3, Amer. Math. Soc. Transl. (2) 173 (1996), 33-40
A. Borobia and V. F. Mazurovskii, Nonsingular configurations of 7 lines in RP^3, J. Knot Theory Ramif. 6(6) (1997), 751-783
O. Y. Viro and Y. V. Drobotukhina, Configurations of skew lines, Leningrad Math. J. 1(4) (1990), 1027-1050
CROSSREFS
KEYWORD
hard,more,nonn
AUTHOR
David Garber, Sep 20 2005
STATUS
approved