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Planes in cubic fourfolds

Degtyarev, Alex ; Itenberg, Ilia ; Ottem, John Christian

Algebraic geometry, 2023-03, p.228-258 [Revista revisada por pares]

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  • Título:
    Planes in cubic fourfolds
  • Autor: Degtyarev, Alex ; Itenberg, Ilia ; Ottem, John Christian
  • Es parte de: Algebraic geometry, 2023-03, p.228-258
  • Notas: NFR/313472
  • Descripción: 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.
  • Idioma: Inglés;Noruego

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