On Blow-ups of Sets with Finite Fractional Variation

Abstract Given $$\alpha \in (0,1)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>α</mml:mi> <mml:mo>∈</mml:mo> <mml:mo>(</mml:mo> <mml:mn>0</mml:mn> <mml:mo>,</mml:mo> <mml:mn>1</mml:mn> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> and a set $$E\subset \mathbb {R}^N$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>E</mml:mi> <mml:mo>⊂</mml:mo> <mml:msup> <mml:mrow> <mml:mi>R</mml:mi> </mml:mrow> <mml:mi>N</mml:mi> </mml:msup> </mml:mrow> </mml:math> with locally finite fractional $$\alpha $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>α</mml:mi> </mml:math> -variation, we show that, for $$|D^\alpha {\textbf{1}}_E|$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mrow> <mml:mo>|</mml:mo> </mml:mrow> <mml:msup> <mml:mi>D</mml:mi> <mml:mi>α</mml:mi> </mml:msup> <mml:msub> <mml:mn>1</mml:mn> <mml:mi>E</mml:mi> </mml:msub> <mml:mrow> <mml:mo>|</mml:mo> </mml:mrow> </mml:mrow> </mml:math> -a.e. x , every non-trivial tangent set of E at x with locally finite integer perimeter is a half-space oriented by the fractional inner unit normal of E at x .

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Publication Details

Journal
Journal of Geometric Analysis
Published
2026-05-11
DOI
https://doi.org/10.1007/s12220-026-02469-y
Primary Topic
Nonlinear Partial Differential Equations
Type
article
Field-Weighted Citation Impact
0.00

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article

On Blow-ups of Sets with Finite Fractional Variation

Giorgio Stefani
Journal of Geometric Analysis
Nonlinear Partial Differential Equations
article

On Blow-ups of Sets with Finite Fractional Variation

Giorgio Stefani
article en

Abstract

Abstract Given $$\alpha \in (0,1)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>α</mml:mi> <mml:mo>∈</mml:mo> <mml:mo>(</mml:mo> <mml:mn>0</mml:mn> <mml:mo>,</mml:mo> <mml:mn>1</mml:mn> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> and a set $$E\subset \mathbb {R}^N$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>E</mml:mi> <mml:mo>⊂</mml:mo> <mml:msup> <mml:mrow> <mml:mi>R</mml:mi> </mml:mrow> <mml:mi>N</mml:mi> </mml:msup> </mml:mrow> </mml:math> with locally finite fractional $$\alpha $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>α</mml:mi> </mml:math> -variation, we show that, for $$|D^\alpha {\textbf{1}}_E|$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mrow> <mml:mo>|</mml:mo> </mml:mrow> <mml:msup> <mml:mi>D</mml:mi> <mml:mi>α</mml:mi> </mml:msup> <mml:msub> <mml:mn>1</mml:mn> <mml:mi>E</mml:mi> </mml:msub> <mml:mrow> <mml:mo>|</mml:mo> </mml:mrow> </mml:mrow> </mml:math> -a.e. x , every non-trivial tangent set of E at x with locally finite integer perimeter is a half-space oriented by the fractional inner unit normal of E at x .

Journal of Geometric AnalysisVol. 36(6)
University of Padua (IT)
Istituto Nazionale di Alta Matematica "Francesco Severi", European Commission, Università degli Studi di Padova, Gruppo Nazionale per l'Analisi Matematica, la Probabilità e le loro Applicazioni
Openalex Percentile: Top 98%
Nonlinear Partial Differential Equations
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