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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

169,181 papers · 148 categories

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0.6%1.2%1.8%2.4% · Apr 199819922001200920182026
20 results for volume-constrained

Study shows limits of volume-constrained sets are finite unions of Wulff shapes.

problem Analyzing the behavior of sets with degenerating ellipticity.
method Proving rigidity of L1L^1-accumulation points of volume-constrained almost-critical sets.
result Limits of volume-constrained sets are finite unions of φφ-Wulff shapes.

We show stability of pairs of Ricci flat metrics and parallel spinor fields with respect to the spinor flow, i.e. we show that the spinor flow with initial conditions near such pairs converges to a critical point with exponential speed. Moreover, we show stability of certain volume constrained critical points of the sp…

2017-06-28abs ↗pdf ↗

We study the long time existence theory for a non local flow associated to a free boundary problem for a trapped non liquid drop. The drop has free boundary components on two horizontal plates and its free energy is anisotropic and axially symmetric. For axially symmetric initial surfaces with sufficiently large volume…

2011-10-31abs ↗pdf ↗

Study finds unique critical points for anisotropic surface energy.

problem Finding unique critical points for anisotropic surface energy.
method Proving finite unions of disjoint open Wulff shapes are volume-constrained critical points.
result Finite unions of disjoint open Wulff shapes are the only critical points.

Capillarity functionals are parameter invariant functionals defined on classes of two-dimensional parametric surfaces in R3 as the sum of the area integral and a non homogeneous term of suitable form. Here we consider the case of a class of non homogenous terms vanishing at infinity for which the corresponding capillar…

2016-08-03abs ↗pdf ↗

In this paper we consider a ``flow'' of nonparametric solutions of the volume constrained Plateau problem with respect to a convex planar curve. Existence and regularity is obtained from standard elliptic theory, and convexity results for small volumes are obtained as an immediate consequence. Finally, the regularity i…

1998-04-02abs ↗pdf ↗

Study on stable partitions in convex domains with three phases, finding disconnected phase stability.

problem Stability of partitions in convex domains with multiple phases.
method Careful derivation of the second variation of area, proving existence of stable partitions involving disconnected phases.
result Existence of stable partitions involving a disconnected phase in three phase problem.

Study on capillarity minimizers with nonlocal repulsion and gravity, proving existence and nonexistence.

problem Minimizing an energy functional with capillarity, nonlocal repulsion, and gravity.
method Quantitative isoperimetric inequalities applied to capillarity problem in a half-space.
result Existence and nonexistence of minimizers for various nonlocal kernels and masses.

Study finds critical points in perimeter functional for fixed volume sets.

problem Finding critical points in perimeter functional for sets of fixed volume.
method Utilizes Mazurwoski--Zhou techniques and new Cacciopoli set connectedness results.
result Constructs smooth almost embedded hypersurfaces with non-zero constant mean curvature.

Proves convexity of minimizers in energy functions with convex potentials.

problem Connectedness and convexity of minimizers in energy functions involving surface tensions and convex potentials.
method Introduces a 'two-point function' to measure lack of convexity and prove negative second variation of the energy.
result Positively answers an old question of Almgren about connectedness and convexity of minimizers.

Study finds minimizers for complex membrane models without symmetry assumptions.

problem Minimizing the Canham-Helfrich functional in multiple phases for heterogeneous biological membranes.
method Reformulated as oriented curvature varifolds, proving existence without symmetry assumptions.
result Existence of minimizers for single- and multiphase models under constraints.

Researchers define and prove existence of minimizers for generalized Willmore functionals.

problem Existence of area constrained minimizers for generalized Willmore functionals.
method Compactness result for branched, immersed, stratified surfaces; direct minimization; introduction of haunted surfaces.
result Existence of area constrained minimizers for generalized Willmore functionals.

See http://youtu.be/Mf4IE8gWcJs for a YouTube video showing part of the results in this paper. We consider helicoidal immersions in the Euclidean space whose axis of symmetry is the z-axis that are solutions of the equation 2 H=Λ_0-a 1/2 R^2 where H is the mean curvature of the surface, R is the distance form the point…

2014-03-24abs ↗pdf ↗

The article explores Helfrich flow with spontaneous curvature, finding singularities and convergence behaviors.

problem Understanding the long-time behavior of Helfrich flow with spontaneous curvature.
method Analyzing the gradient flow of a locally area- and volume-constrained Willmore flow, and applying it to the Helfrich flow.
result For negative spontaneous curvature, the Helfrich flow exhibits finite-time singularities; for positive spontaneous curvature, it converges globally.