Armand Koenig

Université Toulouse III Paul Sabatier, Institut de Mathématiques de Toulouse, France

Postdoc - Université Toulouse III Paul Sabatier

Research interest: Control of PDEs

Contact details

armand.koenig_at_math.univ-toulouse.fr

Institut de Mathématiques de Toulouse
Université Paul Sabatier
118 route de Narbonne
F-31062 Toulouse Cedex 9
France

Office 218, Bâtiment 1R3, Institut de Mathématiques de Toulouse, Toulouse

Publications

Armand Koenig, Pierre Lissy, “Null-controllability of underactuated linear parabolic-transport systems with constant coefficients”, preprint, 2023
Paul Alphonse, Armand Koenig, “Null-controllability for the weakly dissipative fractional heat equations”, preprint, 2022
Jérémi Dardé, Armand Koenig, Julien Royer, “Null-controllability properties of the generalized two-dimensional Baouendi-Grushin equation with non-rectangular control sets”, preprint, 2022
Jean-Michel Coron, Armand Koenig, Hoai-Minh Nguyen, “Lack of local controllability for a water-tank system when the time is not large enough”, preprint, 2022
Jean-Michel Coron, Armand Koenig, Hoai-Minh Nguyen, “On the small-time local controllability of a KdV system for critical lengths”, Journal of the European Mathematical Society , 2022
Armand Koenig, “Contrôlabilité de quelques équations aux dérivées partielles paraboliques peu diffusives”, Ph. D. thesis, 2019
Karine Beauchard, Armand Koenig, Kévin Le Balc'h, “Null-controllability of linear parabolic-transport systems”, Journal de l'École Polytechnique 7, 2020, pp. 743–802
Michel Duprez, Armand Koenig, “Control of the Grushin equation: non-rectangular control region and minimal time”, ESAIM:COCV 26, 2020
Armand Koenig, “Lack of null-controllability for the fractional heat equation and related equations”, SIAM Journal on Control and Optimization 58.6, 2020
Armand Koenig, “Non-null-controllability of the Grushin operator in 2D”, Comptes Rendus Mathématiques 355.12, 2017, pp. 1215–1235

Talks

18 January 2023, “Local Controllability of some PDEs”, Conférence itinérante du GDR EDP, Nantes
10 November 2022, “Quadratic Obstruction for the Local Controllability of a Water-Tank System and the KdV Equation”, Séminaire d'Analyse, Bordeaux
17 October 2022, “An inequality on operators on polynomials”, Workshop on Control Problems, Online
31 May 2022, “Quadratic Obstruction for the Local Controllability of a Water-Tank System and the KdV Equation”, Workshop TRECOS 2022, Aix-Marseille Université
9 November 2021, “Contrôlabilité locale pour un système modélisant un bac d'eau”, Séminaire Modélisation, Analyse et Calcul, Institut de Mathématiques de Toulouse
8 April 2021, “Null-controllability of parabolic-transport systems”, Control in time of Crisis
23 March 2021, “Contrôlabilité à zéro des systèmes paraboliques-hyperboliques”, Journées Jeunes EDPistes 2021
10 November 2020, “Contrôlabilité de quelques équations aux dérivées partielles peu dissipatives”, Séminaire Commun Analyse et EDP, Institut Mathématiques de Bordeaux
30 October 2020, “Control of the fractional heat equation and related equations”, Spectral Theory and Geometry, Domaine de Chalès, France
19 May 2020, “Contrôlabilité de quelques équations aux dérivées partielles paraboliques peu diffusives”, Séminaire Analyse-Proba, CEREMADE, Université Paris-Dauphine
9 January 2020, “Control of parabolic PDEs”, PhD student's seminar, CEREMADE, Université Paris-Dauphine
19 August 2019, “Null-controllability of parabolic-hyperbolic systems”, VIII Partial Differential Equations, Optimal Design and Numerics, Benasque
8 July 2019, “Control of a degenerate parabolic equation: minimal time and geometric dependance”, Equadiff 2019, Leiden
20 June 2019, “(Non) Null-controllability of some Parabolic equations”, Dispersive Waves and Related Topics, Conference in Honor of Gilles Lebeau, Bergen
20 September 2018, “(Non) Null Controllability of the Fractional Heat Equation and of Related Equations”, GE2MI conference on PDE’s, Control Theory and Related Topics, Foz do Arelho, Portugal
28 August 2018, “Parabolic hyperbolic systems: lack of null-controllability in small time”, XIVe Colloque Franco-Roumain de mathématiques appliquées, Bordeaux, France
5 June 2018, “Contrôlabilité de quelques EDPs paraboliques”, Séminaire Analyse Appliquée, I2M, Marseille, France
1 June 2018, “Non-contrôlabilité de quelques équations paraboliques peu diffusives”, CANUM 2018, Cap d'Agde, France
9 May 2018, “Estimations de la première fonction propre de l’oscillateur harmonique”, Colloque des doctorants du Ljad, Peyresq, France
5 October 2017, “Non Null-Controllability of the Grushin Equation in Dimension 2”, Workshop GL2017 on microlocal analysis, resonnnances and control theory in PDEs, S. Margherita di Pula, Italie
24 August 2017, “Non null-controllability of the Grushin equation in dimension 2”, VII Partial Differential Equations, Optimal Design and Numerics, Benasque, Espagne
14 June 2017, “Contrôlabilité des équations aux dérivées partielles paraboliques dégénérées, exemple de l’équation de Grushin”, Groupe de travail "applications des mathématiques", ENS Rennes, France
13 February 2017, “Non Null Controllability of the Grushin Equation in 2D”, Recife Workshop on Control and Stabilization of PDEs, Recife, Brésil
10 April 2017, “Contrôlabilité des EDPs paraboliques”, Séminaire des doctorants du LJAD, Nice, France

Teaching

2018, L1 Mathématiques, Compléments Mathématiques 1, TD (Université de Nice)
2018, L1EG, Mathématiques 2, TD (ISEM)
2018, L1 Maths-info, Mathématiques, TD (Université de Nice)
2017, L1SV, Mathématiques pour biologistes, cours-TD (Université de Nice)
2017, L1EG, Mathématiques 2, TD (ISEM)

Academic background

2021–current, Postdoc CIMI. Supervisor: Jérémi Dardé, Université Toulouse III - Paul Sabatier, Toulouse
2019–2021, Postdoc FSMP. Supervisor: Pierre Lissy, Université Paris-Dauphine, Paris
2016–2019, Ph. D. student. Advisor: G. Lebeau, Université Côte d'Azur, Nice
2012–2016, Student in École normale supérieure (admitted on the competitive exam MPI), Paris
2014–2015, Master 2 MPA, Université de Nice-Sofia Antipolis, Nice
2009–2012, CPGE MPSI&MP*, Lycée Clemenceau, Nantes
2009, Baccalauréat S option SI, Angers

Administrative duties

2018, Co-organisation of the workshop “Young Researchers in Control Theory”, 9-13 July 2018, Les-Salles-sur-Verdon
2021, Participated in Ceremade's working group “Environmental responsibility”
2022–current, Participated in IMT's “Cellule Éco responsable”
2022, Climate Fresk Facilitator