ausblenden:
Schlagwörter:
Mathematics, Algebraic Geometry
Zusammenfassung:
We show that the maximal number of planes in a complex smooth cubic fourfold in P5
is 405, realized by the Fermat cubic only; the maximal number of real planes in a real
smooth cubic fourfold is 357, realized by the so-called Clebsch–Segre cubic. Altogether,
there are but three (up to projective equivalence) cubics with more than 350 planes