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Department of Data Science

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Department of Data Science

Prof. Dr. Jens Habermann

JH

apl. Prof. Dr. Jens Habermann

Adjunct professors

Contact

  • Email: jens.habermann@fau.de

Head of administration

In administrative matters please contact the administrative office of the Department of Data Science dds-geschaeftsstelle@fau.de.

Research Interests

  • Theory of Partial Differential Equations
  • Calculus of Variations
  • Elliptic and parabolic (quasi-)minimizers
  • PDE with non-standard growth conditions
  • (Parabolic) quasiminimizers on metric measure spaces

Projects

  • Stability for doubly nonlinear parabolic equations (C07 intern) (Third Party Funds Group – Sub project) Overall project: TRR 154: Mathematische Modellierung, Simulation und Optimierung am Beispiel von Gasnetzwerken
    Term: 01-05-2020 – 30-06-2022
    Funding source: DFG / Sonderforschungsbereich / Transregio (SFB / TRR)
    URL: https://trr154.fau.de/ →More information
  • Existence and regularity for parabolic quasi minimizers on metric measure spaces (Third Party Funds Single) Term: 01-01-2015 – 31-12-2019
    Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH) Abstract →More information

  • Kobiolka J., Habermann J., Yamakou M.:
    Reduced-order adaptive synchronization in a chaotic neural network with parameter mismatch: a dynamical system versus machine learning approach
    In: Nonlinear Dynamics (2024)
    ISSN: 0924-090X
    DOI: 10.1007/s11071-024-10821-6

  • Gugat M., Habermann J., Hintermüller M., Huber O.:
    Constrained exact boundary controllability of a semilinear model for pipeline gas flow
    In: European Journal of Applied Mathematics (2023), p. 1-22
    ISSN: 0956-7925
    DOI: 10.1017/S0956792522000389
    URL: https://www.cambridge.org/core/journals/european-journal-of-applied-mathematics/article/abs/constrained-exact-boundary-controllability-of-a-semilinear-model-for-pipeline-gas-flow/FD1A8672AEC80D0C3CA20780787E45A7

  • Habermann J., Fujishima Y.:
    Finite speed propagation for parabolic quasiminimizers
    In: Nonlinear Analysis - Theory Methods & Applications 198 (2020), p. 1--17
    ISSN: 0362-546X
    DOI: 10.1016/j.na.2020.111891

  • Habermann J., Fujishima Y.:
    The stability problem for parabolic quasiminimizers in metric measure spaces
    In: Rendiconti Lincei. Matematica e Applicazioni XXIX (2018), p. 343-376
    ISSN: 1120-6330

  • Habermann J., Fujishima Y.:
    Global higher integrability for parabolic quasiminiizers in metric spaces
    In: Advances in Calculus of Variations 10 (2017), p. 267-301
    ISSN: 1864-8258
  • Habermann J., Fujishima Y., Masson M.:
    A fairly strong stability result for parabolic minimizers
    In: Mathematische Nachrichten (2017)
    ISSN: 0025-584X

  • Bemelmans J., Habermann J.:
    Surfaces of prescribed mean curvature in a cone
    In: Archiv der Mathematik 107 (2016), p. 429-444
    ISSN: 0003-889X
    DOI: 10.1007/s00013-016-0940-0

  • Habermann J.:
    Global gradient estimates for non-quadratic vector-valued parabolic quasiminimizers
    In: Nonlinear Analysis - Theory Methods & Applications 114 (2015), p. 42-73
    ISSN: 0362-546X
  • Habermann J.:
    Higher integrability for vector-valued parabolic quasi-minimizers on metric measure spaces
    In: Arkiv For Matematik to appear (2015), p. -
    ISSN: 0004-2080

  • Fujishima Y., Habermann J., Kinnunen J., Masson M.:
    Stability for parabolic quasiminimizers
    In: Potential Analysis 41 (2014), p. 983-1004
    ISSN: 0926-2601
    DOI: 10.1007/s11118-014-9404-y
  • Habermann J.:
    Vector-valued parabolic $\omega$-minimizers
    In: Advances in Differential Equations 19 (2014), p. 1067-1136
    ISSN: 1079-9389
  • Habermann J., Baroni P.:
    Elliptic interpolation estimates for non-standard growth operators
    In: Annales Academiae Scientiarum Fennicae-Mathematica 39 (2014), p. 119-162
    ISSN: 1239-629X
    DOI: 10.5186/aasfm.2014.3915

  • Habermann J.:
    Partial regularity for nonlinear elliptic systems with continuous growth exponent
    In: Annali Di Matematica Pura Ed Applicata 192 (2013), p. 475-527
    ISSN: 0373-3114
    DOI: 10.1007/s10231-011-0233-y

  • Bögelein V., Duzaar F., Habermann J., Scheven C.:
    Stationary electro-rheological fluids: Low order regularity for systems with discontinuous coefficients
    In: Advances in Calculus of Variations 5 (2012), p. 1-57
    ISSN: 1864-8258
    DOI: 10.1515/ACV.2011.009
  • Duzaar F., Habermann J.:
    Partial regularity for parabolic systems with non-standard growth
    In: Journal of Evolution Equations 12 (2012), p. 203-244
    ISSN: 1424-3199
    DOI: 10.1007/s00028-011-0130-2
  • Habermann J., Baroni P.:
    Calderón-Zygmund estimates for parabolic measure data problems
    In: Journal of Differential Equations 252 (2012), p. 412-447
    ISSN: 0022-0396
  • Habermann J., Baroni P.:
    New gradient estimates for parabolic equations
    In: Houston Journal of Mathematics 38 (2012), p. 855-914
    ISSN: 0362-1588

  • Bögelein V., Duzaar F., Habermann J., Scheven C.:
    Partial Hölder continuity for discontinuous elliptic problems with VMO-coefficients
    In: Proceedings of the London Mathematical Society 103 (2011), p. 371-404
    ISSN: 0024-6115
    DOI: 10.1112/plms/pdr009
    URL: http://plms.oxfordjournals.org/content/early/2011/02/27/plms.pdr009.abstract
  • Habermann J., Eleuteri M.:
    A Hölder continuity result for a class of obstace problems under non standard growth conditions
    In: Mathematische Nachrichten 284 (2011), p. 1404-1434
    ISSN: 0025-584X
    DOI: 10.1002/mana.201190024

  • Bögelein V., Habermann J.:
    Gradient estimates via non standard potentials and continuity
    In: Annales Academiae Scientiarum Fennicae-Mathematica 35 (2010), p. 641-678
    ISSN: 1239-629X
    DOI: 10.5186/aasfm.2010.3541
    URL: http://www.acadsci.fi/mathematica/Vol35/BogeleinHabermann.html
  • Eleuteri M., Habermann J.:
    Calderon-Zygmund type estimates for a class of obstacle problems with p(x) growth
    In: Journal of Mathematical Analysis and Applications 372 (2010), p. 140-161
    ISSN: 0022-247X
    DOI: 10.1016/j.jmaa.2010.05.072
  • Habermann J.:
    Full regularity for convex integral functionals with p(x) growth in low dimensions
    In: Bolletino dell Unione Matematica Italiana IX, Vol. III (2010), p. 521-541
    ISSN: 1972-6724

  • Eleuteri M., Habermann J.:
    Regularity results for a class of obstacle problems under nonstandard growth conditions
    In: Journal of Mathematical Analysis and Applications 344 (2008), p. 1120-1142
    ISSN: 0022-247X
    DOI: 10.1016/j.jmaa.2008.03.068
  • Habermann J.:
    Calderon-Zygmund estimates for higher order systems with p(x) growth
    In: Mathematische Zeitschrift 258 (2008), p. 427-462
    ISSN: 0025-5874
    DOI: 10.1007/s00209-007-0180-x
  • Habermann J.:
    Partial regularity for minima of higher order functionals with p(x) growth
    In: Manuscripta Mathematica 126 (2008), p. 1-40
    ISSN: 0025-2611
    DOI: 10.1007/s00229-007-0147-6
  • Habermann J., Zatorska-Goldstein A.:
    Regularity for minimizers of functionals with nonstandard growth by A-harmonic approximation
    In: Nodea-Nonlinear Differential Equations and Applications 15 (2008), p. 169-194
    ISSN: 1021-9722
    DOI: 10.1007/s00030-007-7007-7

  • Habermann J.:
    Regularity results for functionals and Calderon-Zygmund estimates for systems of higher order with p(x) - growth (Dissertation, 2006)

  • Habermann J.:
    Statistisch unabhängige Speckle-Felder zur Reduktion von Meßausfällen in der Weißlichtinterferometrie (Diploma thesis, 2003)

Winter term 2025/26 Teaching

  • Mathematik für Physikstudierende C
    • Lecture (5 SWS)
      • Mi, 10.15 – 11.45, HA, Staudtstr. 7, Erlangen
      • Do, 08.15 – 10.00, HH, Staudtstr. 7, Erlangen
      • Di, 14.15 – 15.45 (14tgl.), HE , Staudtstr. 7, Erlangen
    • Tutorium/Tafelübung (1 SWS)
      • Di, 14.15 – 15.45 (14tgl.), HE, Staudtstr.7, Erlangen
    • Exercises (2 SWS)
      • Do, 14 – 16
      • Fr, 12 – 14

Summer term 2025 Teaching

  • Mathematik für Data Science II/Physikstudierende B
    • Lecture (4 SWS)
      • Mo, 12.15 – 13.45, H12, Cauerstr. 11, Erlangen
      • Mi, 12.15 – 13.45, H12, Cauerstr. 11, Erlangen
    • Tutorium/Tafelübung (2 SWS)
      • Do, 16.15 – 17.45, H8
    • Exercises (2 SWS)

Winter term 2024/25

  • Mathematik für Data Science I/Physikstudierende A
    • Lecture (4 SWS)
    • Tutorium/Tafelübung (2 SWS)
    • Exercises (2 SWS)

Summer term 2024

  • Seminar: Masterseminar: A mathematical approach to deep learning (2 SWS)

Winter term 2023/24

  • Seminar: Elementare Differentialgeometrie (2 SWS)

Summer term 2023

  • Masterseminar: A mathematical approach to deep learning (2 SWS)

Winter term 2022/23

  • Analysis III
    • Lecture (4 SWS)
    • Tutorium (2 SWS)
    • Exercises (2 SWS)

Bachelor, Master, and Doctor Thesis

I would be pleased to discuss possible topics for bachelor and master thesis as well as dissertations. Please contact me at any time.

Thesis

Dissertations

  • Existenz für parabolische Quasiminimierer auf metrischen Maßräumen (M. Collins, finished 2020)
  • Regularitätssätze für parabolische Quasiminimier auf metrischen Maßräumen (A. Herán, finished 2020)

Master Thesis

  • A minimizing movement approach for parabolic PDEs on metric spaces (M. Bauer, SS 2024)
  • Ein Stabilitätsresultat für parabolische Quasiminimierer (D. Beyer, SS 2021)
  • Der Einbettungssatz von Morrey für Banachraum-wertige Funktionen (S. Heiland, WS 2019/20)
  • Ein Regularitätssatz für parabolische Quasiminimierer (S. Gärttner, WS 2018/19)
  • Regularität für elliptische Systeme in Diagonalgestalt (B. Schmidt, WS 2016/17)
  • Schauder-Abschätzungen mittels Skalierung (C. Endres, WS 2016/17)
  • Die gebrochene Maximalfunktion und die Hardy-Ungleichung auf Sobolev-Räumen (A. Herán, SS 2016)
  • Ein Regularitätsresultat für Quasi-Minimierer auf metrischen Maßräumen (M. Collins, WS 2015/16)

Bachelor Thesis

  • Klassische Approximationssätze für periodische Funktionen (L. Kafka, WS 2023/24)
  • Die Sätze von Hopf-Rinow und Hadamard (J. Stürmer, WS 2021/22)
  • Riemannsche Geometrie: Räume konstanter negativer Krümmung (D. Kreiner, WS 2020/21)
  • Riemannsche Geometrie: Der Satz von Bonnet-Myers (F. Bäuerlein, WS 2020/21)
  • Jacobi-Felder und konjugierte Punkte (F. Aurbach, WS 2020/21)
  • Modelle der hyperbolischen Geometrie (C. Carl, WS 2018/19)
  •  Variationsrechnung unter Nebenbedingungen – Geodätische auf Flächenstücken (D. Geyer, SS 2018)
  •  Stabilitätsdiskussion für Flächen konstanter mittlerer Krümmung (J. Peters, SS 2017)
  •  Die Weierstraß-Darstellung von Minimalflächen (J. Butz, SS 2017)
  •  Das Plateau-Problem: Existenzbeweis für rektifizierbare geschlossene Jordankurven (J. Neumann, SS 2117)
  •  Existenz- und Eindeutigkeit für schwache Lösungen der stationären Stokes-Gleichung (C. Kuchler, SS 2015)
  •  Evolutorische Spieltheorie (A. Herán, SS 2014)
  •  Berechnung optimaler Strategien bei endlichen Zwei-Personen-Nullsummenspielen (J. Seifert, SS 2014)
  •  Das Minimax-Theorem für Zwei-Personen-Nullsummenspiele (Y. Hu, SS 2014)
  •  Tug-of-War-Games: Grenzwerte von Wertfunktionen (M. Collins, SS 2014)

Exam Thesis for teaching degree (Gymnasium) (written academic paper according to LPO I)

  • Geodätische in der hyperbolischen Ebene (J. Gwinner, WS 2022/23)
  • Modelle der Hyperbolischen Geometrie in der Ebene (H. Frisch, WS 2021/22)
  • Differentialgeometrische Betrachtung von Modellen der hyperbolischen Geometrie (L. Bautz, SS 2021)
  • Die innere Geometrie von Flächen (A. Karbacher, SS 2020)
  • Der Mylar-Ballon: Eine Betrachtung aus differentialgeometrischer Sicht (M. Wachter, SS 2020)
  • Delaunay-Flächen: Rotationsflächen mit konstanter mittlerer Krümmung (F. Berger, SS 2018)
  • Darstellungsformeln und Beispiele für Minimalflächen (H. Giepen, SS 2017)
  • Betrachtung diverser Randbedingungen in der klassischen Variationsrechnung (A. Strobelt, WS 2017/18)
  • Kriterien für Extrema in der klassischen Variationsrechnung (M. Schienagel, WS 2016/17)
  • Darstellungsformeln und Beispiele für Minimalflächen (H. Giepen, WS 2016/17)

Exam Thesis for teaching degree (Realschule, nicht vertieft) (written academic paper according to LPO I)

  • Volumen und Oberfläche von Rotationskörpern — die Guldin’schen Regeln (in Bearbeitung)
  • Das Brachistochronen-Problem (T. Biswas, WS 2024/25)
  • Regelflächen und ihre Anwendung (K. Canli, SS 2024)
  • Evolute und Evolvente (A. Sekora, SS 2024)
  • Beispiele für Minimalflächen (V. Merdian, WS 2023/24)
  • Aspekte der Geometrie in der hyperbolischen Ebene (K. Müller, WS 2023/24)
  • Die Zykloide: Helena der Geometrie (F. Braun, WS 2021/22)

Recent Position

Außerplanmäßiger Professor
Head of the Administration — Department of Data Science

Scientific Vita

Since 07/2023Außerplanmäßiger Professor, Department of Data Science, Friedrich-Alexander University Erlangen-Nürnberg
Since 08/2021Akademischer Oberrat, Department of Data Science, Friedrich-Alexander University Erlangen-Nürnberg
09/2018 – 06/2021Deputy Professorship (W3, chair), Department of Mathematics, Friedrich-Alexander University Erlangen-Nürnberg
07/2013Habilitation at the Faculty of Natural Sciences, Friedrich-Alexander University Erlangen-Nürnberg
04/2012 – 07/2012Deputy Professorship (W3, chair), Department of Mathematics, Friedrich-Alexander University Erlangen-Nürnberg
04/2011 – 02/2012Deputy Professorship (W2), Department of Mathematics, Friedrich-Alexander University Erlangen-Nürnberg
08/2009 – 04/2011Research Fellow at the University of Parma, Italy
10/2008 – 02/2009Deputy Professorship (W2), Department of Mathematics, University of Regensburg
07/2006 – 07/2020Research Associate (Akademischer Rat a.Z.), Department of Mathematics, Friedrich-Alexander University Erlangen-Nürnberg
07/2003 – 06/2006Research Assistant, Department of Mathematics, Friedrich-Alexander University Erlangen-Nürnberg

Conferences and Talks

06/2022Talk at the conference “Advances in Calculus of Variations”, Naples, Italy
09/2019Talk at the “Doktoratskolloquium”,  Paris Lodron University of Salzburg, Austria
09/2019Talk at the “Oberseminar Analysis” Aalto University, Helsinki
07/2016Talk at the conference “The total variations flow and related nonlinear evolution problems”,  Paris Lodron University of Salzburg, Austria
08/2015Talk at the conference “Partial differential equations, optimal design and numerics”, Benasque, Spain
06/2014Talk in the “Mathematisches Kolloquium” at the University of Aachen
06/2014Talk at the conference “Singular and degenerate evolution problems”, Cortona, Italy
12/2013Conference, “Quasilinear PDEs and Game Theory”, Uppsala, Sweden
09/2013Workshop in “New Trends in Shape Optimization”, Erlangen
09/2013“Evolutionary Problems”, Research Period, Mittag-Leffler Institut, Stockholm
08/2013Conference, “Partielle Differentialgleichungen”, Mathematisches Forschungsinstitut Oberwolfach
07/2012Talk in the “Oberseminar Analysis” at the University of Aachen
05/2012Talk in a Minisymposium at the “7th European Conference on Elliptic and Parabolic Problems”, Gaeta, Italy
09/2009Intensive Research Period: “Regularity for non-linear PDEs”, Centro di Ricerca Matematica Ennio De Giorgi, Pisa, Italy
05/2009Talk in a Minisymposium at the “6th European Conference on Elliptic and Parabolic Problems”, Gaeta, Italy
02/2009Talk in the “Mathematisches Kolloquium”, Friedrich-Alexander University Erlangen-Nürnberg (Habilitations-Vorstellungsvortrag)
01/2009Talk in the “Oberseminar Analysis”, University of Regensburg
12/2008Talk in the “Mathematisches Kolloquium”, University of Regensburg
06/2008“Harmonic Analysis and PDE”, spring school, Helsinki, Finland
03/2008Talk at the “Mathematics Day”, Siemens-Forum, Erlangen
07/2007Talk in the “Oberseminar Analysis”, Weierstraß-Institute for Applied Analysis and Stochastics (WIAS), Berlin
06/2007Talk at the Conference “Geometric Analysis and Nonlinear PDEs”, Bedlewo, Poland
05/2007“Quasiconvexity, Quasiregularity and Rigidity of Gradients”, workshop, Regensburg
01/2007“Opening Colloquium of the Hausdorff Center for Mathematics”, Bonn
09/2004“Trends in the Calculus of Variations”, conference, Parma, Italy

Studies

06/2006Completed PhD, Faculty of Sciences, Friedrich-Alexander University Erlangen-Nürnberg
03/2003Diploma in Physics, Friedrich-Alexander University Erlangen-Nürnberg
10/1997 – 03/2003Studies of Physics, Friedrich-Alexander University Erlangen-Nürnberg

Scholarships and Awards

12/2018FAU award for excellence in teaching (FAU-Nachwuchs-Lehrpreis), Friedrich-Alexander University Erlangen-Nürnberg
12/2004 – 05/2006PhD Scholarship of the Studienstiftung des deutschen Volkes
07/2003Ohm award (dedicated to support young researchers in the field of physics at FAU), Department of Physics, Friedrich-Alexander University Erlangen-Nürnberg
12/1998 – 03/2003Scholarship of the Studienstiftung des deutschen Volkes

Committees

09/2018 & 06/2022Managing director of the SFB TRR 154 Mathematical Modelling, Simulation and Optimization using the Example of Gas Networks, Friedrich-Alexander University Erlangen-Nürnberg
01/2008 & 01/2009Member of the selection committee of the Studienstiftung des deutschen Volkes
04/2007 – 04/2009Representative of the Research Staff in the Commission for tuition fees (Kommission zur Verwendung der Studiengebühren), Friedrich-Alexander University Erlangen-Nürnberg
Department of Data Science
Friedrich-Alexander-Universität Erlangen-Nürnberg

Nürnberger Str. 74
91052 Erlangen
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