1,232 research outputs found

    On the Hodge decomposition in R^n

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    We prove a version of the LpL^p hodge decomposition for differential forms in Euclidean space and a generalization to the class of Lizorkin currents. We also compute the LqpL_{qp}-cohomology of Rn\mathbb{R}^n.Comment: 28 page

    On the origin of Hilbert Geometry

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    In this brief essay we succinctly comment on the historical origin of Hilbert geometry. In particular, we give a summary of the letter in which David Hilbert informs his friend and colleague Felix Klein about his discovery of this geometry. The present paper is to appear in the Handbook of Hilbert geometry, (ed. A. Papadopoulos and M. Troyanov), European Mathematical Society, Z\"urich, 2014

    On the Moduli Space of Singular Euclidean Surfaces

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    The goal of this paper is to develop some aspects of the deformation theory of piecewise flat structures on surfaces and use this theory to construct new geometric structures on the moduli space of Riemann surfaces.Comment: To appear in the Handbook of Teichmuller Theory, vol. 1, ed. A. Papadopoulos, European Math. Society Series, 200

    Modelling of heat treatment of plates from aluminum alloys using ESI group solution for heat treatment

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    To produce competitive high quality product with reducing manufacturing cost more and more companies make a choice of using numerical simulations as the first manufacturing step. Virtual manufacturing solution from ESI Group helps users to find the best way of organization manufacturing process, to avoid mistakes in real life, evaluated them during simulation processes

    The Myers-Steenrod theorem for Finsler manifolds of low regularity

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    We prove a version of Myers-Steenrod's theorem for Finsler manifolds under minimal regularity hypothesis. In particular we show that an isometry between Ck,αC^{k,\alpha}-smooth (or partially smooth) Finsler metrics, with k+α>0k+\alpha>0, kN{0}k\in \mathbb{N} \cup \{0\}, and 0α10 \leq \alpha \leq 1 is necessary a diffeomorphism of class Ck+1,αC^{k+1,\alpha}. A generalisation of this result to the case of Finsler 1-quasiconformal mapping is given. The proofs are based on the reduction of the Finlserian problems to Riemannian ones with the help of the the Binet-Legendre metric.Comment: 14 page
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