Li-Yau type inequalities for curves in any codimension

12 Feb 2021 Tatsuya Miura

For immersed curves in Euclidean space of any codimension we establish Li-Yau type inequalities that give lower bounds of the (normalized) bending energy in terms of multiplicity. The obtained inequalities are optimal for any codimension and any multiplicity except for the case of planar closed curves with odd multiplicity; in this remaining case we discover a hidden algebraic obstruction and indeed prove an exhaustive non-optimality result... (read more)

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  • DIFFERENTIAL GEOMETRY
  • ANALYSIS OF PDES
  • 53A04, 49Q10, AND 53E40