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Hipersuperficies isoparamétricas y métricas de curvatura escalar ...

Hipersuperficies isoparamétricas y métricas de curvatura escalar ...

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Problema <strong>de</strong> Yamabe<br />

<strong>Hipersuperficies</strong> Isopara<strong>métricas</strong><br />

Resultados<br />

Si l = 1 la flia. <strong>de</strong> h.i. son S n−1 . Si l = 2 son S k × S n−k−1<br />

con 1 ≤ k ≤ n − 2<br />

Si el grado es 3, las multiplicida<strong>de</strong>s posibles son m = 1, 2, 4, 8,<br />

por lo tanto sólo pue<strong>de</strong> haber (hay) h.i. <strong>de</strong> grado 3 en<br />

S 4 , S 7 , S 8 , S 25 (Cartan ’38).<br />

Si l = 6 entonces m1 = m2 = 1 y m1 = m2 = 2. Solo hay en<br />

S 7 y S 13 Abresch ’83, Miyaoka 2009.<br />

Todos estos casos son homogéneos.<br />

<strong>Hipersuperficies</strong> <strong>isopara<strong>métricas</strong></strong> y <strong>métricas</strong> <strong>de</strong> <strong>curvatura</strong> <strong>escalar</strong> c

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