Homepage of Timo de Wolff

Address:
Prof. Dr. Timo de Wolff
Institut für Analysis und Algebra
AG Algebra
Technische Universität Braunschweig
Universitätsplatz 2
38106 Braunschweig
Germany
Office: Room 525
Phone: +49-(0)531-391-7503
E-mail: t.de-wolff(AT)tu-braunschweig.de.
Secretariat: Silke Thiel, Room 603
Phone Secretariat: +49-(0)531-391-7552
E-mail Secretariat: s.thiel(AT)tu-braunschweig.de.

I am the head of the research group on "Applied Algebra" at the Department of Mathematics of the Technische Universität Braunschweig. I am also a member of the Emmy Noether Program of the DFG, leading a project on "New Certificates of Nonnegativity and Their Application in Science and Engineering". Before I came to TU Braunschweig, I held positions at the Technical University Berlin, the Texas A&M University, the Saarland University, and the Goethe University.

Here you can find my CV.

Office hours: Tuesday, 13:00 - 14:45 or by appointment.

Upcoming Events

May 22, 2019: Colloquium talk at the Department of Mathematics at the Universität Osnabrück, Germany.
June 7-8, 2019: Workshop on "Applied Algebra" at the Technische Universität Braunschweig, Germany; organizer joint with Bernd Sturmfels.
June 17-21, 2019: "MEGA 2019" at the Universidad Complutense de Madrid, Spain.
June 23-26, 2019: Talk at the "EURO 2019" in Dublin, Ireland.
July 9-13, 2019: "SIAM Conference on Applied Algebraic Geometry 2019" at the Universität Bern, Switzerland; organizer of two minisymposia
Aug 5-8, 2019: Talk at the "ICCOPT 2019" in Berlin, Germany.
Sep 23-27, 2019: Talk at the workshop on "Discrete Geometry with a View on Symplectic and Tropical Geometry" at the Universität zu Köln, Germany.
Oct 7-11, 2019: Talk at the "Opening Conference for the MATH+ Semester on Algebraic Geometry" at the Technische Universität Berlin, Germany.
July 13-17, 2020: "ICMS 2020" at the Technische Universität Braunschweig, Germany; local chair.

Editorial Work

I am an associate editor for the SIAM Journal on Applied Algebra and Geometry.

News

04/01/2019: Joint with my group, I started my new position at the Department of Mathematics of the Technische Universität Braunschweig.
03/12/2019: Adam Kurpisz and I have finished our new article "New Dependencies of Hierarchies in Polynomial Optimization".
02/07/2019: Victor Magron, my PhD student Henning Seidler, and I have finished our new article Exact Optimization via Sums of Nonnegative Circuits and Sums of AM/GM Exponentials.
02/05/2019: Version 0.2.0.0(a) of our software POEM (Effective Methods in Polynomial Optimization) is released.
01/04/2019: I will be the local head organizer of the ICMS 2020 conference, which will occur at the Technische Universität Braunschweig.
12/20/2018: Joint with Bernd Sturmfels I will organize a workshop on "Applied Algebra" at the Technische Universität Braunschweig at June 7 and 8, 2019. A website with further information will follow soon.
12/03/2018: My PhD student Henning Seidler was awarded with the 3rd prize at the International Students' Olympiad in Cryptography in the category "professionals". Congratulations!
11/29/2018: My former master student Sascha Timme was awarded for the best master thesis in mathematics at TU Berlin in 2018 (tied with two other students) at the Dies Mathematicus. Congratulations!
10/27/2018: I accepted an offer for a W2 professorship (i.e., Associate Professor with tenure) at the Department of Mathematics of the Technische Universität Braunschweig. I will start my new position on April 1st, 2019.
10/15/2018: Starting January 1st, 2019, I will join the editorial board of the SIAM Journal on Applied Algebra and Geometry (SIAGA) as an associate editor for a 3-year term.
10/15/2018: Xiaoxian Tang, Rukai Zhao, and I have finished a new article "Computing Elimination Ideals and Discriminants of Likelihood Equations".
Suplimentary Material for the computations in the article are available via our website accompanying the article.
08/28/2018: My PhD student Henning Seidler, and I have finished our new article "An Experimental Comparison of SONC and SOS Certificates for Unconstrained Optimization".
08/02/2018: My colleague and friend Annie Raymond started a series on Instagram portraying women and members of minorities working in math or CS research: _forall.
Visit, read their fascinating stories, and share with others. Science may never be a privilege of few defined by sex, race, or other arbitrary categories. Science is for all!
07/24/1028: Finally, our software for the computation of SONC and SOS certificates in polynomial optimization has a name (and a new homepage): POEM (Effective Methods in Polynomial Optimization).
06/13/2018: My paper "Optimization over the Boolean Hypercube via Sums of Nonnegative Circuit Polynomials" (with M. Dressler and A. Kurpisz) is accepted for a talk at "MFCS 2018".
05/31/2018: A couple of papers got accepted for publication in the last few days: Both my article "An Approach to Constrained Polynomial Optimization via Nonnegative Circuit Polynomials and Geometric Programming" (with M. Dressler and S. Iliman) and my article "Imaginary Projections of Polynomials" (with T. Jörgens and T. Theobald) got accepted by the special issue of the Journal of Symbolic Computation for " MEGA 2017". My article "Nondegenerate Multistationarity in Small Reaction Networks" (with A. Shiu) was accepted by Discrete and Continuous Dynamical Systems, Series B. Moreover, my paper "Optimization over the Boolean Hypercube via Sums of Nonnegative Circuit Polynomials" (with M. Dressler and A. Kurpisz) is accepted for a talk at "FLoC '18".
05/09/2018: Version (0.4b) of our software for Viro's Patchworking is now online.
04/09/2018: Version 0.1.1.0(a) of our software for the computation of SONC nonnegativity certificates is now online.
02/28/2018: Mareike Dressler, Adam Kurpisz, and I have finished our new article "Optimization over the Boolean Hypercube via SONCs".
02/12/2018: The first prototype of our software for the computation of SONC nonnegativity certificates went online today. This is joint work with my PhD-student Henning Seidler. The development will go on and new features will be added soon.
01/31/2018: Anne Shiu and I have finished our new article "Nondegenerate Multistationarity in Small Reaction Networks".
11/09/2017: Jens Forsgård and I have finished our new article "The Lattice of Amoebas".
09/01/2017: My article "Lopsided Approximation of Amoebas" (with J. Forsgård, L. Matusevich, and N. Mehlhop) was accepted for publication in Mathematics of Computation.
05/24/2017: My article "A Positivstellensatz for Sums of Nonnegative Circuit Polynomials" (with M. Dressler, S. Iliman) was accepted for publication in the SIAM Journal on Applied Algebra and Geometry.
04/10/2017: My article "Amoebas and their Tropicalizations - a Survey" was accepted for the Memorial Volume of Trends in Mathematics for Mikael Passare. Mikael was an oustanding mathematician and an outstanding person. He was always very kind to me and gave me several helpful suggestions when I was a PhD-student. Mikael passed away unexpectedly at the age of 52 during a hiking tour in Oman in 2011.
04/03/2017: Version 0.1.0.1(a) of our software package "Maximal_Mediated_Sets.sage" is online.
02/15/2017: Both my articles "A Positivstellensatz for Sums of Nonnegative Circuit Polynomials" (with M. Dressler, S. Iliman) and "Imaginary Projections of Polynomials" (with T. Jörgens, T. Theobald) have been accepted for a talk at MEGA 2017.
01/11/2017: The Deutsche Forschungsgemeinschaft (German Research Foundation) accepted me into the Emmy Noether Programme. The DFG will fund a Junior Research Group under my direction at the Technical University Berlin starting in July 2017.
10/01/2016: My undergraduate research student Jacob Hartzer and I have completed the first alpha version of our software package "Maximal_Mediated_Sets.sage".
09/01/2016: Jens Forsgård, Laura Matusevich, Nathan Mehlhop (who worked as an undergrad research student with Laura and me), and I have finished our new article "Lopsided Approximation of Amoebas". I have also written a corresponding software "Lopsided_Amoeba_Approximation".
07/20/2016: Mareike Dressler, Sadik Iliman, and I finished our article "A Positivstellensatz for Sums of Nonnegative Circuit Polynomials".
02/21/2016: Mareike Dressler, Sadik Iliman, and I finished our article "An Approach to Constrained Polynomial Optimization via Nonnegative Circuit Polynomials and Geometric Programming".
02/11/2016: My article "Intersections of Amoebas" (joint with Martina Juhnke-Kubitzke) has been accepted for a poster presentation on FPSAC '16.
02/08/2016: This is a really nice day. Thorsten Jörgens, Thorsten Theobald, and I finished our article "Imaginary Projections of Polynomials". Also, my article "Lower Bounds for Polynomials with Simplex Newton Polytopes Based on Geometric Programming" (joint with Sadik Iliman) has been accepted by the SIAM Journal on Optimization today.
10/28/2015: After three years of work (with some breaks in between) Martina Juhnke-Kubitzke and I finally finished our article Intersections of Amoebas.
10/22/2015: My article "Norms of Roots of Trinomials" (joint with Thorsten Theobald) has been accepted by Mathematische Annalen. Recently, my article "Amoebas, Nonnegative Polynomials and Sums of Squares Supported on Circuits", (joint with Sadik Iliman) has been accepted by Research in the Mathematical Sciences.
09/23/2015: The first alpha version of our software "Viro.sage" for using Viro Patchworking in SAGE went online today. This is joint work with Chris O'Neill and Emma Owusu Kwaakwah. The development will go on and new features will be added soon.

Last Update: April 09, 2019