an:03991668
Zbl 0613.14020
Kluck??, Dalibor; Markov??, Libu??e
On inflection points of the plane quartic with two nodal and one flexnodal points
EN
Acta Univ. Palacki. Olomuc., Fac. Rerum Nat. 82, Math. 24, 41-44 (1985).
00283371
1985
j
14H20 51N35 14N05
flecnode of a curve; inflexion
A flecnode of a curve is a point at which a node and an inflexion coincide; that is, one of the tangents at the node has intersection multiplicity at least four with the curve at that point. The rational quartic C with two nodes and one flecnode P is investigated. It is found that there are four inflexions of C other than P and they lie on a line pair through P.
J.W.P.Hirschfeld