7- Second Question Dimensional Spherical Voids

This paper mainly discusses the second gap problem of compact minimal hypersurfaces in7-dimensional unit sphere which square of length of second fundamental form is constant.Thehypothesis that has three distinct principal curvatures and the main curvature of multiplicity is2,and then get the following results: if S>6, then S≥11. in a special case, expanding the gap ofChen’s conjecture.