Daniel Heldt Address: Technische Universität Berlin Institut für Mathematik Arbeitsgruppe Diskrete Mathematik Raum MA 605 Sekretariat MA 6-1 Straße des 17. Juni 136 D-10623 Berlin, Germany Tel: +49-30-314 28 766 Email: dheldt at domain domain = math.tu-berlin.de Secretary: Gabriele Klink Tel: +49-30-314 25728 Fax: +49-30-314 25191

Teaching

• Winter Term 2011/2012:
  
  • Lineare Algebra I (für Mathematiker), Prof. Felsner
  • Graphentheorie (Graph Theory / DS II), Prof. Felsner
  • Seminar: Ausgewählte Kapitel der Kombinatorik, Prof. Felsner. Das Wiki dazu.
  
  
• Summer Term 2011:
  
  • Combinatorics (DS I), Prof. Felsner
  
  
• Winter Term 2010/2011:
  
  • Analysis I für Ingenieure
  
  
• Summer Term 2010:
  
  • Early Bird II: Analysis II für Ingenieure
  • Seminar: Ausgewählte Kapitel der Graphentheorie: Zur Kombinatorik von Hyperebenenarrangements, Prof. Felsner
  
  
• Winter Term 2009/2010:
  
  • Vorlesung über Graphentheorie (DS II), Prof. Felsner
  • Seminar: Pflasterungen (Tilings), Prof. Felsner
  
  
• Summer Term 2009:
  • Combinatorics (DS I), Prof. Felsner
  
  
• Winter Term 2008/2009:
  • Algorithmische Geometrie (KG II), Prof. Felsner
  • Seminar: Ausgewählte Kapitel der Graphentheorie: Markov Ketten und Random Sampling, Prof. Felsner

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Research Interests

• Counting k-heights and Alpha Orientations via Markov Chains
• Lattice Path Enumeration

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Affiliations

• Member of the Deutsche Mathematiker Vereinigung (DMV).

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Preprints and Publications:

• D. Heldt, K Knauer, T. Ueckertdt: On the bend-number of planar and outerplanar graphs LATIN 2012 (accepted), arxiv version, December 2011
• D. Heldt, K. Knauer, T. Ueckerdt: Edge-intersection graphs of grid paths: the bend-number, arxiv, September 2010,
• D. Heldt, M. Kreuzer, S. Pokutta and H. Poulisse: Approximate computation of zero-dimensional polynomial ideals, Journal of Symbolic Computation Volume 44, Issue 11, November 2009, Pages 1566-1591, In Memoriam Karin Gatermann
• D. Heldt: Numerische Varianten des Buchberger-Möller-Algorithmus, Diploma Thesis at Dortmund University.
• M. Abshoff and D. Heldt: Computing approximating vanishing ideals of finite sets of points using CoCoA, software presentation at the MEGA 2007.
• D. Heldt, M. Kreuzer, S. Pokutta and H. Poulisse: Algebraische Modellierung mit Methoden der approximativen Computeralgebra und Anwendungen in der Ölindustrie, OR News 28 (2006), S. 15-18
• D. Heldt, S. Pokutta and H. Poulisse: Algebraic Computations on Noisy, Measured Data, February 2006, Workshop B1: Approximate Commutative Algebra, Special Semester on Gröbner Bases and related Methods, RICAM, Linz

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Conferences and Seminars

• 7th International Conference on Lattice Path Combinatorics and Applications in Pisa, Italy, July 2010.
• KolKom 2009 in Magdeburg, Germany, November 2009.
• KolKom 2008 in Magdeburg, Germany, November 2008.
• MEGA 2007 in Strobl, Austria, June 2007.
• CoCoA Summer School 2007 in Hagenberg-Linz, Austria, June 2007.
• ISSAC 2006 in Genova, Italy, June 2006
• Workshop B1: Approximate Commutative Algebra, Special Semester on Gröbner Bases and related Methods, Linz, Austria, February 2006
• COSCOMP 2005 in Vienna, Austria, June 2005.
• MEGA 2005 in Porto Conte, Italy, June 2005.
• CoCoA Summer School 2005 in Porto Conte, Italy, May 2005.

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Last update: January 2012