## Abstract

Let Ω be an open set. We consider the supremal functional E∞(u,O):=‖Du‖L∞(O),O⊆Ωopen,applied to locally Lipschitz mappings u: R^{n}⊇ Ω ⟶ R^{N}, where n, N∈ N. This is the model functional of Calculus of Variations in L^{∞}. The area is developing rapidly, but the vectorial case of N≥ 2 is still poorly understood. Due to the non-local nature of (1), usual minimisers are not truly optimal. The concept of so-called absolute minimisers is the primary contender in the direction of variational concepts. However, these cannot be obtained by direct minimisation and the question of their existence under prescribed boundary data is open when n, N≥ 2. We present numerical experiments aimed at understanding the behaviour of minimisers through a new technique involving p-concentration measures.

Original language | English |
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Article number | 51 |

Journal | Nonlinear Differential Equations and Applications |

Volume | 27 |

Issue number | 6 |

Early online date | 10 Oct 2020 |

DOIs | |

Publication status | Published - 1 Dec 2020 |

## Keywords

- Aronsson equation
- Calculus of Variations in L
- Supremal functionals
- Vectorial absolute minimisers
- ∞-Laplacian

## ASJC Scopus subject areas

- Analysis
- Applied Mathematics

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