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Sondre Tesdal Galtung

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Sondre Tesdal Galtung

Tilknyttet
Institutt for matematiske fag

sondre.galtung@ntnu.no
Sentralbygg 2, 1022, Gløshaugen
Google Scholar ORCID
Om Publikasjonar Undervising Formidling

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Publikasjonar

Sjå engelskspråkleg side for eventuelle upubliserte arbeid.

  • Kronologisk
  • Etter kategori
  • Se alle publikasjoner i Cristin

2025

  • Galtung, Sondre Tesdal. (2025) The Sticky Particle Dynamics of the 1D Pressureless Euler-Alignment System as a Gradient Flow. Applied Mathematics and Optimization
    Vitenskapelig artikkel

2023

  • Ben-Porat, Immanuel; Carrillo, José A.; Galtung, Sondre Tesdal. (2023) Mean field limit for one dimensional opinion dynamics with Coulomb interaction and time dependent weights. Nonlinear Analysis
    Vitenskapelig artikkel

2022

  • Bressan, Alberto; Galtung, Sondre Tesdal; Grunert, Katrin; Nguyen, Khai Tien. (2022) Shock interactions for the Burgers-Hilbert equation. Communications in Partial Differential Equations
    Vitenskapelig artikkel
  • Bressan, Alberto; Galtung, Sondre Tesdal; Sun, Qing. (2022) Optimal shapes for tree roots. SIAM Journal on Mathematical Analysis
    Vitenskapelig artikkel
  • Galtung, Sondre Tesdal; Grunert, Katrin. (2022) Stumpons are non-conservative traveling waves of the Camassa–Holm equation. Physica D : Non-linear phenomena
    Vitenskapelig artikkel

2021

  • Galtung, Sondre Tesdal; Grunert, Katrin. (2021) A numerical study of variational discretizations of the Camassa–Holm equation. BIT Numerical Mathematics
    Vitenskapelig artikkel
  • Galtung, Sondre Tesdal; Raynaud, Xavier. (2021) A semi-discrete scheme derived from variational principles for global conservative solutions of a Camassa–Holm system. Nonlinearity
    Vitenskapelig artikkel

2020

  • Bressan, Alberto; Galtung, Sondre Tesdal; Reigstad, Audun; Ridder, Johanna. (2020) Competition models for plant stems. Journal of Differential Equations
    Vitenskapelig artikkel
  • Bressan, Alberto; Galtung, Sondre Tesdal. (2020) A 2-dimensional shape optimization problem for tree branches. Networks and Heterogeneous Media
    Vitenskapelig artikkel

2018

  • Galtung, Sondre Tesdal. (2018) Convergence Rates of a Fully Discrete Galerkin Scheme for the Benjamin–Ono Equation. Springer Nature
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Galtung, Sondre Tesdal. (2018) A Convergent Crank–Nicolson Galerkin Scheme for the Benjamin–Ono Equation. Discrete and Continuous Dynamical Systems. Series A
    Vitenskapelig artikkel

2016

  • Oosterkamp, Antonie; Ytrehus, Tor; Galtung, Sondre Tesdal. (2016) Effect of the choice of boundary conditions on modelling ambient to soil heat transfer near a buried pipeline. Applied Thermal Engineering
    Vitenskapelig artikkel

Tidsskriftspublikasjoner

  • Galtung, Sondre Tesdal. (2025) The Sticky Particle Dynamics of the 1D Pressureless Euler-Alignment System as a Gradient Flow. Applied Mathematics and Optimization
    Vitenskapelig artikkel
  • Ben-Porat, Immanuel; Carrillo, José A.; Galtung, Sondre Tesdal. (2023) Mean field limit for one dimensional opinion dynamics with Coulomb interaction and time dependent weights. Nonlinear Analysis
    Vitenskapelig artikkel
  • Bressan, Alberto; Galtung, Sondre Tesdal; Grunert, Katrin; Nguyen, Khai Tien. (2022) Shock interactions for the Burgers-Hilbert equation. Communications in Partial Differential Equations
    Vitenskapelig artikkel
  • Bressan, Alberto; Galtung, Sondre Tesdal; Sun, Qing. (2022) Optimal shapes for tree roots. SIAM Journal on Mathematical Analysis
    Vitenskapelig artikkel
  • Galtung, Sondre Tesdal; Grunert, Katrin. (2022) Stumpons are non-conservative traveling waves of the Camassa–Holm equation. Physica D : Non-linear phenomena
    Vitenskapelig artikkel
  • Galtung, Sondre Tesdal; Grunert, Katrin. (2021) A numerical study of variational discretizations of the Camassa–Holm equation. BIT Numerical Mathematics
    Vitenskapelig artikkel
  • Galtung, Sondre Tesdal; Raynaud, Xavier. (2021) A semi-discrete scheme derived from variational principles for global conservative solutions of a Camassa–Holm system. Nonlinearity
    Vitenskapelig artikkel
  • Bressan, Alberto; Galtung, Sondre Tesdal; Reigstad, Audun; Ridder, Johanna. (2020) Competition models for plant stems. Journal of Differential Equations
    Vitenskapelig artikkel
  • Bressan, Alberto; Galtung, Sondre Tesdal. (2020) A 2-dimensional shape optimization problem for tree branches. Networks and Heterogeneous Media
    Vitenskapelig artikkel
  • Galtung, Sondre Tesdal. (2018) A Convergent Crank–Nicolson Galerkin Scheme for the Benjamin–Ono Equation. Discrete and Continuous Dynamical Systems. Series A
    Vitenskapelig artikkel
  • Oosterkamp, Antonie; Ytrehus, Tor; Galtung, Sondre Tesdal. (2016) Effect of the choice of boundary conditions on modelling ambient to soil heat transfer near a buried pipeline. Applied Thermal Engineering
    Vitenskapelig artikkel

Del av bok/rapport

  • Galtung, Sondre Tesdal. (2018) Convergence Rates of a Fully Discrete Galerkin Scheme for the Benjamin–Ono Equation. Springer Nature
    Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Undervising

Emne

  • INGT1002 - Programmering, numerikk og sikkerhet

Underviser numerikkdelen av INGT1002 hausten 2024.

Formidling

2024

  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2024) Equivalence of entropy solutions and gradient flows for the 1D pressureless Euler-Poisson system. Shanghai Jiao Tong University The 19th International Conference on Hyperbolic Problems (HYP2024) , Shanghai 2024-07-01 - 2024-07-05
  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2024) A variational discretization of the Camassa–Holm equation and a non-conservative traveling wave. Florida International University Applied Math Seminar , Online / Miami, FL 2024-02-16 -
  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2024) Equivalence of entropy solutions and gradient flows for the 1D pressureless Euler-Poisson system. Universitetet i Oslo Norwegian meeting on PDEs 2024 , Oslo 2024-06-05 - 2024-06-07
  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2024) Equivalence of entropy solutions and gradient flows for the 1D pressureless Euler–Poisson system. DNA-gruppa, Institutt for matematiske fag, NTNU DNA seminar 2024-04-29 - 2024-04-29
  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2024) The Cucker–Smale and Euler-alignment models: sticky particles and subgradient flows. DNA-gruppa, Institutt for matematiske fag, NTNU DNA seminar 2024-10-14 - 2024-10-14

2023

  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2023) A variational discretization of the Camassa–Holm equation, and a non-conservative traveling wave. Linköpings Universitet Matematiska kollokviet , Linköping 2023-11-01 - 2023-11-01
  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2023) A variational discretization of the Camassa–Holm equation, and a non-conservative, energy preserving solution. Gui-Qiang Chens forskningsgruppe, University of Oxford Forskningsgruppeseminar , Oxford 2023-01-19 - 2023-01-19
  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2023) The mean field limit for 1D opinion dynamics through front tracking approximations. Inria Numerical methods for hyperbolic problems – numhyp23 , Bordeaux 2023-06-26 - 2023-06-30
  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2023) A variational discretization of the Camassa–Holm equation vs. the stumpon. Order and Randomness in Partial Differential Equations , Institut Mittag-Leffler 2023-11-07 - 2023-11-07

2022

  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2022) A variational discretization of the Camassa–Holm equation, and a non-conservative, energy-preserving solution. José Carrillos forskningsgruppe, University of Oxford Forskningsgruppeseminar , Oxford 2022-11-09 - 2022-11-09
  • Poster
    Galtung, Sondre Tesdal. (2022) Stumpons are non-conservative traveling waves of the Camassa–Holm equation. Universitetet i Bergen 2nd Norwegian meeting on PDEs , Bergen 2022-06-08 - 2022-06-10
  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2022) Some models for biological shape growth. Aalto University 28th Nordic Congress of Mathematics , Espoo 2022-08-18 - 2022-08-21
  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2022) Stumpons are non-conservative traveling waves of the Camassa-Holm equation. Universidad de Malaga XVIII International Conference on Hyperbolic Problems Theory, Numerics, Applications , Malaga 2022-06-20 - 2022-06-24

2020

  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2020) A semi-discrete Camassa–Holm system based on variational principles. DNA-gruppa, Institutt for matematiske fag, NTNU DNA seminar , Trondheim 2020-09-16 - 2020-09-16

2018

  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2018) A Discrete Lagrangian Scheme for the Two-component Camassa–Holm System. Penn State University XVII International Conference on Hyperbolic Problems Theory, Numerics, Applications , State College, PA 2018-06-25 - 2018-06-29

2017

  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2017) A convergent Crank–Nicolson Galerkin scheme for the Benjamin–Ono equation. Chalmers tekniska högskola SDE school , Göteborg 2017-03-07 - 2017-03-10
  • Poster
    Galtung, Sondre Tesdal. (2017) A Discrete Scheme for Solving the Benjamin–Ono Equation. Heidelberg Laureate Forum Foundation Heidelberg Laureate Forum , Heidelberg 2017-09-24 - 2017-09-29

2016

  • Vitenskapelig foredrag
    Galtung, Sondre Tesdal. (2016) A Convergent Crank–Nicolson Type Galerkin Scheme for the Benjamin–Ono Equation. RWTH Aachen XVI International Conference on Hyperbolic Problems Theory, Numerics, Applications , Aachen 2016-08-01 - 2016-08-05

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