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Fractional combinatorial Calabi flow on surfaces

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arxiv 2107.14102 v1 pith:K6WGJSK6 submitted 2021-07-29 math.GT math.DG

classification math.GTmath.DG
keywords flowcombinatorialcalabifractionalsurfacesdiscreteconformalcircle
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Using the fractional discrete Laplace operator for triangle meshes, we introduce a fractional combinatorial Calabi flow for discrete conformal structures on surfaces, which unifies and generalizes Chow-Luo's combinatorial Ricci flow for Thurston's circle packings, Luo's combinatorial Yamabe flow for vertex scaling and the combinatorial Calabi flow for discrete conformal structures on surfaces. For Thurston's Euclidean and hyperbolic circle packings on triangulated surfaces, we prove the longtime existence and global convergence of the fractional combinatorial Calabi flow. For vertex scalings on polyhedral surfaces, we do surgery on the fractional combinatorial Calabi flow by edge flipping under the Delaunay condition to handle the potential singularities along the flow. Using the discrete conformal theory established by Gu et al., we prove the longtime existence and global convergence of the fractional combinatorial Calabi flow with surgery.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Combinatorial Yamabe flow on infinitely triangulated hyperbolic surfaces

    math.DG 2026-07 conditional novelty 6.0 of 10

    The hyperbolic combinatorial Yamabe flow on infinite triangulated surfaces has short-time well-posedness under angle and degree bounds, and its extended version is globally well-posed under an integrability condition.

  2. Combinatorial Calabi flow for ideal circle pattern

    math.DG 2025-01 accept novelty 6.0 of 10

    The combinatorial Calabi flow for ideal circle patterns exists for all time and converges exponentially fast to the target ideal circle pattern metric whenever the target curvature vector is attainable.

  3. Discrete conformal structures on surfaces with boundary (III) -- Deformation

    math.DG 2025-07 conditional novelty 5.0 of 10

    Combinatorial Ricci and Calabi flows on discrete conformal structures over surfaces with boundary are proven to converge exponentially to prescribed boundary lengths, globally for two structure classes and locally for...

  4. Improved explicit estimates for the discrete Laplace operator with hyperbolic circle patterns

    math.DG 2025-07 conditional novelty 5.0 of 10

    The paper gives explicit, radius-independent upper bounds for the coefficients of the discrete Laplacian on hyperbolic circle patterns for all weights in [0, π) satisfying a structural condition.

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