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Journal of Geometric Analysis· 2026Q1

Some Remarks on Singular Capillary Cones with Free Boundary

Alberto Pacati, Giorgio Tortone, Bozhidar Velichkov

Short summary

Minimizing capillary cones are proven to be flat under specific mean curvature conditions (non-negative for n≤4, non-positive for n≤6) and in dimensions up to 6 for axially symmetric cases.

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Key points

  • Minimizing capillary cones are flat if free boundary mean curvature is non-negative and n≤4.
  • Minimizing capillary cones are flat if free boundary mean curvature is non-positive and n≤6.
  • Axially symmetric minimizing cones are flat in dimensions up to 6.
  • Improved regularity results are derived for graphical minimizing capillary hypersurfaces.

AI-generated from the title and abstract; the full text is not read.

Abstract

Abstract We study singular minimizing capillary cones with free boundary. We provide a stability criterion à la Jerison–Savin and use it to prove that a minimizing capillary cone is flat when its free boundary mean curvature is non-negative and $$n\le 4$$ n ≤ 4 , or non-positive and $$n\le 6$$ n ≤ 6 . We also show that minimizing cones with axially symmetric free boundary are flat in dimensions up to $$6$$ 6 , and derive improved regularity results for graphical minimizing capillary hypersurfaces. The proofs rely on Simons-type inequalities for convex, homogeneous, symmetric functions of the principal curvatures, coupled with a boundary identity intrinsic to the capillary setting.

The authors' abstract, as published at the source. Journal of Geometric Analysis, 2026 · DOI ↗

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Field: Computational Theory and Mathematics

Computational Theory and MathematicsComputer Science