يعرض 1 - 10 نتائج من 303 نتيجة بحث عن '"Bernard Helffer"', وقت الاستعلام: 0.88s تنقيح النتائج
  1. 1
    تقرير
    Global counterexamples to uniqueness for a Calder\'on problem with $C^k$ conductivities

    المؤلفون: Thierry, Daudé, Bernard, Helffer, Niky, Kamran, François, Nicoleau

    مصطلحات موضوعية: Mathematics - Analysis of PDEs, Mathematical Physics, Mathematics - Spectral Theory, 81U40, 35P25, 58J50

    URL الوصول: http://arxiv.org/abs/2406.14063

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  2. 2
    Semi‐classical edge states for the Robin Laplacian

    المؤلفون: Bernard Helffer, Ayman Kachmar

    المصدر: Mathematika. 68:454-485

    مصطلحات موضوعية: General Mathematics

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::7fa34f4afe2f2db9fca19489149e9d64
    https://doi.org/10.1112/mtk.12134

    View record at Wiley
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  3. 3
    Courant-sharp property for Dirichlet eigenfunctions on the Möbius strip

    المؤلفون: Pierre Bérard, Bernard Helffer, Rola Kiwan

    المساهمون: Institut Fourier (IF), Université Grenoble Alpes [2020-....] (UGA [2020-....])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mathématiques Jean Leray (LMJL), Université de Nantes - Faculté des Sciences et des Techniques, Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS), American University in Dubai, Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)

    المصدر: Portugaliae Mathematica
    Portugaliae Mathematica, European Mathematical Society Publishing House, 2021, 78 (1), pp.1--41

    مصطلحات موضوعية: Mathematics - Differential Geometry, Pure mathematics, Spectral theory, General Mathematics, MSC (2010): 58C40, 49Q10, Möbius strip, 01 natural sciences, Square (algebra), Mathematics - Spectral Theory, symbols.namesake, Nodal sets, Dirichlet eigenvalue, [MATH.MATH-MP]Mathematics [math]/Mathematical Physics [math-ph], Euler characteristic, 0103 physical sciences, [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP], 0101 mathematics, Mathematical Physics, Eigenvalues and eigenvectors, Mathematics, Courant theorem, 010102 general mathematics, 2010: 58C40, 49Q10, Mathematics::Spectral Theory, Eigenfunction, 16. Peace & justice, Surface (topology), [MATH.MATH-DG]Mathematics [math]/Differential Geometry [math.DG], symbols, 010307 mathematical physics, Laplacian, [MATH.MATH-SP]Mathematics [math]/Spectral Theory [math.SP]

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23269f1b4be533287c7954d7dde5b771
    https://doi.org/10.4171/pm/2059

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  4. 4
    Tunneling effect induced by a curved magnetic edge

    المؤلفون: Søren Fournais, Bernard Helffer, Ayman Kachmar

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::19b12f1145daaf0436cb3d8ac6dd44e1
    https://doi.org/10.4171/90-1/14

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  5. 5
    Effective operators on an attractive magnetic edge

    المؤلفون: Søren Fournais, Bernard Helffer, Ayman Kachmar, Nicolas Raymond

    المصدر: Fournais, S, Helffer, B, Kachmar, A & Raymond, N 2023, ' Effective operators on an attractive magnetic edge ', Journal de l'Ecole Polytechnique-Mathematiques, vol. 10, pp. 917-944 . https://doi.org/10.5802/jep.236

    مصطلحات موضوعية: Mathematics - Spectral Theory, General Mathematics, FOS: Mathematics, discontinuous magnetic field, Magnetic Laplacian, Spectral Theory (math.SP), semiclassical analysis, spectrum

    وصف الملف: application/pdf

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d2d6b49c6fee2299576a9588585b730

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  6. 6
    Courant-sharp Robin eigenvalues for the square: the case with small Robin parameter

    المؤلفون: Katie Gittins, Bernard Helffer

    المساهمون: Université de Neuchâtel (Université de Neuchâtel), Laboratoire de Mathématiques Jean Leray (LMJL), Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN), Helffer, Bernard

    المصدر: Annales mathématiques du Québec
    Annales mathématiques du Québec, Springer, In press

    مصطلحات موضوعية: Spectral theory, General Mathematics, Courant-sharp, [MATH] Mathematics [math], 01 natural sciences, Domain (mathematical analysis), Square (algebra), Mathematics - Spectral Theory, symbols.namesake, Robin eigenvalues, 0103 physical sciences, FOS: Mathematics, [MATH.MATH-SP] Mathematics [math]/Spectral Theory [math.SP], Neumann boundary condition, square, [MATH]Mathematics [math], 0101 mathematics, Spectral Theory (math.SP), Eigenvalues and eigenvectors, Mathematics, 35P99, 58J50, 58J37, 010102 general mathematics, Mathematical analysis, Mathematics::Spectral Theory, Robin boundary condition, Number theory, Dirichlet boundary condition, symbols, 010307 mathematical physics, [MATH.MATH-SP]Mathematics [math]/Spectral Theory [math.SP]

    وصف الملف: application/pdf

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79db6d5845ce2efbc057fe9d1f40b53d
    https://doi.org/10.1007/s40316-019-00120-7

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  7. 7
    On a Schrödinger operator with a purely imaginary potential in the semiclassical limit

    المؤلفون: Bernard Helffer, Yaniv Almog, Denis S. Grebenkov

    المساهمون: Louisiana State University (LSU), Laboratoire de physique de la matière condensée (LPMC), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mathématiques Jean Leray (LMJL), Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)

    المصدر: Communications in Partial Differential Equations
    Communications in Partial Differential Equations, Taylor & Francis, 2019, 44 (12), pp.1542-1604. ⟨10.1080/03605302.2019.1646281⟩

    مصطلحات موضوعية: [PHYS.PHYS.PHYS-BIO-PH]Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph], Applied Mathematics, Operator (physics), [PHYS.MPHY]Physics [physics]/Mathematical Physics [math-ph], 010102 general mathematics, Spectrum (functional analysis), Semiclassical physics, 16. Peace & justice, 01 natural sciences, [PHYS.PHYS.PHYS-COMP-PH]Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph], 010101 applied mathematics, symbols.namesake, Margin (machine learning), symbols, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], Limit (mathematics), [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech], 0101 mathematics, [PHYS.PHYS.PHYS-DATA-AN]Physics [physics]/Physics [physics]/Data Analysis, Statistics and Probability [physics.data-an], Analysis, Schrödinger's cat, Mathematics, Mathematical physics

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da7ff55f598b3c8be03a82d2e040cce5
    https://doi.org/10.1080/03605302.2019.1646281

    PDF full text from Publisher
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  8. 8
    Spectral analysis near a dirac type crossing in a weak non-constant magnetic field

    المؤلفون: Radu Purice, Bernard Helffer, Horia D. Cornean

    المصدر: CORNEAN, HORIA D, HELFFER, BERNARD & PURICE, RADU 2021, ' Spectral analysis near a dirac type crossing in a weak non-constant magnetic field ', Transactions of the American Mathematical Society, vol. 374, no. 10, pp. 7041-7104 . https://doi.org/10.1090/tran/8402

    مصطلحات موضوعية: General Mathematics, Dirac (software), FOS: Physical sciences, Dirac operator, 01 natural sciences, Mathematics - Spectral Theory, symbols.namesake, 0103 physical sciences, FOS: Mathematics, 0101 mathematics, Spectral Theory (math.SP), Mathematical Physics, Eigenvalues and eigenvectors, Mathematics, 35Q40, 35S05, 47G30, Series (mathematics), Applied Mathematics, 010102 general mathematics, Spectrum (functional analysis), Landau quantization, Mathematical Physics (math-ph), Magnetic field, Quantum electrodynamics, symbols, 010307 mathematical physics, Constant (mathematics)

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5925b9d1ab8e6776e3f7d40691863346
    https://vbn.aau.dk/da/publications/72d4b03c-91e3-4dec-b0aa-aaf927dd22b8

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  9. 9
    On the spectral properties of the Bloch–Torrey equation in infinite periodically perforated domains

    المؤلفون: Denis S. Grebenkov, Bernard Helffer, Nicolas Moutal

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::faf3e76dc8c1926fd46ac535b45a6736
    https://doi.org/10.4171/ecr/18-1/10

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  10. 10
    Improving Semigroup Bounds with Resolvent Estimates

    المؤلفون: Johannes Sjöstrand, Bernard Helffer

    المساهمون: Laboratoire de Mathématiques Jean Leray (LMJL), Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN), Institut de Mathématiques de Bourgogne [Dijon] (IMB), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université de Bourgogne (UB), EIPHI Graduate SchoolANR-17-EURE-0002, ANR-17-EURE-0002,EIPHI,Ingénierie et Innovation par les sciences physiques, les savoir-faire technologiques et l'interdisciplinarité(2017)

    المصدر: Integral Equations and Operator Theory
    Integral Equations and Operator Theory, Springer Verlag, 2021, 93 (3), pp.36. ⟨10.1007/s00020-021-02652-6⟩

    مصطلحات موضوعية: Algebra and Number Theory, Optimization problem, Generator (computer programming), 010504 meteorology & atmospheric sciences, Semigroup, 010102 general mathematics, Mathematical proof, 01 natural sciences, Algebra, Riccati equation, Optimal bounds, [MATH]Mathematics [math], 0101 mathematics, Resolvent, Analysis, 0105 earth and related environmental sciences, Mathematics

    URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5733be81da569b9d8f7d4014e894390
    https://doi.org/10.1007/s00020-021-02652-6

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