June 18, 2019 | "MEGA 2019", Universidad Complutense de Madrid, Spain. |
An Experimental Comparison of SONC and SOS Certificates for Unconstrained Optimization | |
July 5, 2016 | "FPSAC '16", Simon Fraser University, Vancouver, Canada. |
Intersections of Amoebas (poster presentation) | |
June 18, 2015 | "MEGA 2015", University of Trento, Italy. |
Norms of Roots of Trinomials | |
June 15, 2015 | "MEGA 2015", University of Trento, Italy. |
Amoebas, Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
June 5, 2013 | "MEGA 2013", Goethe University, Frankfurt/Main, Germany. |
Separating Inequalities for Nonnegative Polynomials that Are not Sums of Squares | |
May 31, 2011 | "MEGA 2011", Stockholm University, Sweden. |
Approximation of Amoebas and Coamoebas by Sums of Squares (poster presentation) |
Sep 14-17, 2020 | Minisymposium "Computeralgebra" at the DMV Jahrestagung, TU Chemnitz, Germany. |
TBA | |
June 15-24, 2020 | Workshop "Computational Algebraic Geometry" at the FoCM 2020 Conference, Simon Fraser University, Vancouver, Canada. |
Cancelled due to COVID-19. | |
Oct 8, 2019 | "Varieties, Polyhedra, Computation" Opening Conference for the MATH+ Semester on Applied Algebraic Geometry, TU Berlin, Germany. |
Discriminants, Nonnegativity, and Tropical Geometry | |
Sep 27, 2019 | Workshop "Discrete Geometry with a View on Symplectic and Tropical Geometry"; Univ. of Cologne, Germany. |
Discriminants, Nonnegativity, and Tropical Geometry | |
Aug 6, 2019 | Cluster "Conic, Copositive and Polynomial Optimization" at the ICCOPT 2019 in Berlin, Germany. |
New Dependencies of Hierarchies in Polynomial Optimization | |
July 11, 2019 | Minisymposium "Numerical Methods for Structured Polynomial Solving" at the 2019 SIAM Conference on Applied Algebraic Geometry in Bern, Switzerland. |
Polyhedral Real Homotopy Continuation | |
March 20, 2019 | Conference "Mathematics of Quantum Information", Siegen, Germany. |
New Dependencies of Hierarchies in Polynomial Optimization | |
Dec 14, 2018 | Workshop "Applied Algebraic Geometry", Bristol, UK. |
Nondegenerate Multistationarity in Small Reaction Networks | |
Nov 21, 2018 | Session "Semidefinite Optimization and Applications" at the PGMO Days 2018, EDF'Lab Paris-Saclay, France. |
An Experimental Comparison of SONC and SOS Certificates for Unconstrained Optimization | |
Nov 3, 2018 | AMS Special Session on "Numerical Methods for Nonlinear Systems", University of Arkansas, Fayetteville, AR, USA. |
Polynomial Optimization via SONC Certificates | |
Oct 19, 2018 | Workshop "Real Algebraic Geometry and Optimization", ICERM, Brown University, RI, USA. |
An Experimental Comparison of SONC and SOS Certificates for Unconstrained Optimization | |
Oct 2, 2018 | Workshop on "Hot Topics: Shape and Structure of Materials", MSRI, Berkeley, CA, USA. |
An Introduction to Computational Algebraic Geometry and Polynomial Optimization | |
July 12, 2018 | Session "Theory of Convex Optimization" at the 2018 SIAM Annual Meeting in Portland, OR, USA. |
Optimization over the Boolean Hypercube via Sums of Nonnegative Circuit Polynomials | |
July 3, 2018 | Workshop "Relative Entropy Programming" at the ISMP 2018 in Bordeaux, France. |
Optimization over the Hypercube via Sums of Nonnegative Circuit Polynomials | |
Feb 22, 2018 | Workshop "Combinatorics, Polytopes, and Complexity" during the semester programm "Tropical Geometry, Amoebas, and Polytopes", Institut Mittag-Leffler, Djursholm, Sweden. |
The Lattice of Amoebas | |
Nov. 14, 2017 | Session "Hierarchies of Certified Convex Programs for Polynomial Systems" at the PGMO Days 2017, EDF'Lab Paris-Saclay, France. |
Cancelled due to sickness. | |
Aug. 4, 2017 | Minisymposium "Semidefinite Optimization and Convex Algebraic Geometry" at the 2017 SIAM Conference on Applied Algebraic Geometry, Atlanta, GA. |
The Relation between SOS and SONC | |
July 11, 2017 | Workshop "Computational Algebraic Geometry" at FoCM 2017, Barcelona, Spain. |
A Positivstellensatz for Sums of Nonnegative Circuit Polynomials | |
May 22-25, 2017 | "2017 SIAM Conference on Optimization", Vancouver, Canada. |
Cancelled due to move to Germany | |
Nov. 14, 2016 | "INFORMS Annual Meeting", Nashville, TN. |
New Certificates for Nonnegativity via Circuit Polynomials | |
Nov. 12, 2016 | AMS special session on "Applied Algebraic Geometry", NCSU, Raleigh, NC. |
New Certificates for Nonnegativity via Nonnegative Circuit Polynomials | |
May 4, 2016 | "Eighth Discrete Geom. and Algebr. Combinatorics Conf.", South Padre Island, TX. |
New Certificates for Nonnegativity via Circuit Polynomials and Geometric Programming | |
April 9, 2016 | "Meeting on Algebraic Geometry for Applications", Clemson University, SC. |
New Certificates for Nonnegativity via Circuit Polynomials and Geometric Programming | |
Aug. 4, 2015 | "SIAM Conference on Applied Algebraic Geometry", NIMS & KAIST, Deajeon, South Korea. |
Roots of Trinomials from the Viewpoint of Amoeba Theory | |
May 29, 2015 | "Workshop on NonLinear Algebra", Academy of Sciences and Humanity, Berlin, Germany. |
Computing Amoebas | |
May 1, 2015 | "Tropical Aspects in Geometry, Topology and Physics", MFO, Oberwolfach, Germany. |
Amoebas, Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
June 27, 2014 | "Tropical Dibbelabbes", Saarland University, Saarbrücken, Germany. |
Amoebas, Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
Sep. 3, 2013 | "Tropical Geometry and Topology", MPI, Bonn, Germany. |
Roots of Trinomials from the Viewpoint of Amoeba Theory | |
July 30, 2011 | "4th PhD-students Conference on Tropical Geometry", Technische Universität Kaiserslautern, Germany. |
The Configuration Space of Amoebas with Barycentric Simplex Newton Polytope | |
Oct. 2, 2009 | "DMV-Studierendenkonferenz", Ruhr Universität, Bochum, Germany. |
Polytopes with Special Simplices | |
Dec. 11, 2009 | "1st PhD-students Conference on Tropical Geometry", Technische Universität Berlin, Germany. |
Amoebas of Genus at Most One |
Oct. 11, 2019 | "Herbstplenum der Jungen Akademie", Katholische Akademie Hamburg, Germany. |
Artificial Intelligence in Medicine (poster presentation; joint with I. N. Schellinger) | |
Oct. 11, 2019 | "Herbstplenum der Jungen Akademie", Katholische Akademie Hamburg, Germany. |
Identifying Parameter Regions of Monostationarity via SONC (poster presentation) | |
Sep. 27, 2017 | "First annual meeting of the DFG collaborative research center SFB-TRR 195", RWTH Aachen, Germany. |
Lopsided Amoeba Approximation | |
Aug. 2, 2017 | "SIAM Conference on Applied Algebraic Geometry", Atlanta, GA. |
Current Key Problems on Sums of Nonnegative Circuit Polynomials | |
June 10, 2017 | Workshop "Polynomials and Polytopes", Technische Universität Berlin, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
July 26, 2016 | "XXI Coloquio Latinoamericano de Álgebra", Universidad de Buenos Aires, Argentina. |
Intersections of Amoebas (poster presentation) | |
April 2, 2016 | "TAGS 2016", University of Texas at Austin, TX. |
Intersections of Amoebas (poster presentation) | |
Jan. 9, 2016 | "Joint Mathematics Meeting", Seattle, WA. |
Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
Nov. 7, 2015 | "TGTC '15", Rice University, Houston, TX. |
Norms of Roots of Trinomials (poster presentation) | |
Apr. 11, 2015 | "TAGS 2015", Texas A&M University, College Station, TX. |
Norms of Roots of Trinomials (poster presentation) | |
March 15, 2014 | Annual conference of the DFG priority project SPP 1489 "Algorithmic and experimental methods in algebra, geometry, and number theory", Bad Boll, Germany. |
Amoebas, Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
Sep. 25, 2013 | "ÖMG-DMV Congress 2013", University of Innsbruck, Austria. |
Roots of Trinomials from the Viewpoint of Amoeba Theory | |
Sep. 18, 2012 | "DMV-Jahrestagung", Saarland University, Saarbrücken, Germany. |
Tropical Approaches to Amoebas Supported on a Circuit | |
April 2, 2012 | Workshop "Tropical Geometry", ICMS, Edinburgh, Scotland. |
The Configuration Space of Amoebas (poster presentation) | |
Nov. 12, 2010 | "Kolkom 2010", MPI, Saarbrücken, Germany. |
Polytopes with Special Simplices |
Jan. 09, 2019 | Discrete Mathematics and Geometry Seminar, TU Berlin, Berlin, Germany. |
Nondegenerate Multistationarity in Small Reaction Networks | |
Oct. 29, 2018 | Industrial & Applied Mathematics Seminar, Texas A&M University, College Station, TX, USA. |
An Experimental Comparison of SONC and SOS Certificates for Unconstrained Optimization | |
Oct. 26, 2018 | Valley Geometry Seminar, UMass Amherst, MA, USA. |
An Experimental Comparison of SONC and SOS Certificates for Unconstrained Optimization | |
May 14, 2018 | Séminaire Parisien d'Optimisation, Intitut Henri Poincaré, Paris, France. |
A New Approach to Nonnegativity and Polynomial Optimization | |
Nov 29, 2017 | Graduiertenkolleg: "Kombinatorische Strukturen in der Geometrie", Universität Osnabrück, Germany. |
Discrete Structures Related to Nonnegativity | |
Nov 20, 2017 | Graduiertenkolleg: "Methods for Discrete Structures", Technische Universität Berlin, Germany. |
Discrete Structures Related to Nonnegativity | |
Oct 27, 2017 | Oberseminar "Mathematische Optimierung", Otto von Guericke Universität Magdeburg, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
Aug 23, 2017 | Discrete Mathematics and Geometry Seminar, Technische Universität Berlin, Germany. |
Intersections of Amoebas | |
July 14, 2017 | Applied Mathematic Seminar, Universität Bonn, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
Feb 17, 2017 | Geometry Seminar, Texas A&M University, College Station, TX. |
Constrained Polynomial Optimization via SONCs and Relative Entropy Programming | |
Feb 17, 2017 | Algebra & Combinatorics Seminar, Texas A&M University, College Station, TX. |
A Positivstellensatz for Sums of Nonnegative Circuit Polynomials | |
Feb 7, 2017 | Junior Algebra & Geometry Seminar, Texas A&M University, College Station, TX. |
An Introduction to Tropical Geometry | |
Nov 25, 2016 | Discrete Geometry Seminar, Freie Universität Berlin, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
Nov 24, 2016 | Discrete and Algorithmic Geometry Seminar, Technische Universität Berlin, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
April 8, 2016 | Algebraic Geometry and Number Theory Seminar, Clemson University, SC. |
Intersections of Amoebas | |
March 16, 2016 | Algebra Seminar, Universidad de Los Andes, Bogotá, Colombia. |
An Introduction to Amoeba Theory and Intersections of Amoebas | |
Feb. 16, 2016 | Junior Algebra & Geometry Seminar, Texas A&M University, College Station, TX. |
An Introduction to Tropical Geometry | |
Feb. 11, 2016 | Scientific and Statistical Computing Seminar, University of Chicago, IL. |
New Certificates for Nonnegativity via Circuit Polynomials and Geometric Programming | |
Feb. 4, 2016 | FRAGMENT Seminar, Colorado State University, Fort Collins, CO. |
An Introduction to Amoeba Theory and Intersections of Amoebas | |
Feb. 3, 2016 | Joint FRAGMENT and Poisson Geometry Seminar, University of Colorado at Boulder, CO. |
New Certificates for Nonnegativity via Circuit Polynomials and Geometric Programming | |
Jan. 29, 2016 | Algebra and Combinatorics Seminar, Texas A&M University, College Station, TX. |
Intersections of Amoebas | |
Oct. 6, 2015 | Algebra Seminar, Emory University, Atlanta, GA. |
Roots of Trinomials from the Viewpoint of Amoeba Theory | |
Oct. 5, 2015 | Algebra Seminar, Georgia Tech, Atlanta, GA. |
Amoebas, Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
Sep. 15, 2015 | Algebraic Geometry and Number Theory Seminar, Rice University, Houston, TX. |
Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
June 26, 2015 | CAKE Seminar, Universität Osnabrück, Germany. |
An Introduction to Amoeba Theory | |
June 11, 2015 | Oberseminar Algebraische Geometrie, Universität Augsburg, Germany. |
Roots of Trinomials from the Viewpoint of Amoeba Theory | |
March 6, 2015 | Algebra and Combinatorics Seminar, Texas A&M University, College Station, TX. |
A Sharp Upper Bound for the Complexity of Labeled Oriented Trees | |
Feb. 19, 2015 | Number Theory Seminar, University of Texas at Austin, TX. |
Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
Feb. 16, 2015 | Geometry Seminar, Texas A&M University, College Station, TX. |
The Boundary of Amoebas | |
Sep. 30, 2014 | Student Working Seminar in Discrete Math., Texas A&M University, College Station, TX. |
An Introduction to Amoeba Theory | |
Sep. 29, 2014 | Geometry Seminar, Texas A&M University, College Station, TX. |
Amoebas, Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
Sep. 23, 2014 | Student Working Seminar in Discrete Math., Texas A&M University, College Station, TX. |
An Introduction to Tropical Geometry | |
June 5, 2014 | Discrete Geometry Seminar, Freie Universität Berlin, Germany. |
Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
Jan. 28, 2014 | Research Group "Polyhedral Surfaces", Technische Universität Berlin, Germany. |
An Introduction to Amoeba Theory | |
Jan. 28, 2014 | AG Diskrete Mathematik, Goethe University, Frankfurt/Main, Germany. |
The Boundary of Amoebas | |
Jan. 15, 2014 | Oberseminar: Optimierung, Geometrie und diskrete Math., Universität zu Köln, Germany. |
Amoebas, Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
Dec. 5, 2013 | Oberseminar Algebraische Geometrie und Computeralgebra, Saarland University, Saarbrücken, Germany. |
The Boundary of Amoebas | |
July 12, 2013 | AG Diskrete Mathematik, Goethe University, Frankfurt/Main, Germany. |
Contemporary Key Problems in Amoeba Theory | |
Oct. 28, 2012 | PhD-students seminar, Goethe University, Frankfurt/Main, Germany. |
An Introduction to Amoeba Theory | |
June 27, 2012 | AG & Oberseminar Diskrete Mathematik, Goethe University, Frankfurt/Main, Germany. |
Roots of Trinomials from the Viewpoint of Amoeba Theory | |
June 8, 2012 | Working group algebra and combinatorics, CWI, Amsterdam, The Netherlands. |
Separating Inequalities for Nonnegative Polynomials that Are not Sums of Squares | |
June 6, 2012 | Séminaire de Géométrie Tropicale, Université Pierre et Marie Curie (Paris 6), Paris, France. |
Roots of Trinomials from the Viewpoint of Amoeba Theory | |
May 23, 2012 | Oberseminar "Kombinatorik und Algebra", Philipps-Universität, Marburg, Germany. |
Roots of Trinomials from the Viewpoint of Amoeba Theory | |
Feb. 1, 2012 | Research Seminar, Université de Genève, Switzerland. |
Contemporary Key Problems in Amoeba Theory | |
July 5, 2011 | AG & Oberseminar Diskrete Mathematik, Goethe University, Frankfurt/Main, Germany. |
The Configuration Space of Amoebas with Barycentric Simplex Newton Polytope | |
Nov 27, 2010 | Research Seminar, Courant Research Centre, Göttingen, Germany. |
(Co)Amoebas: Different Aspects of Approximation, Boundary and Homotopy | |
Dec. 18, 2009 | AG & Oberseminar Diskrete Mathematik, Goethe University, Frankfurt/Main, Germany. |
Amoebas of Genus at Most One |
May 22, 2019 | Colloquium, Universität Osnabrück, Germany. |
An Introduction to Nonnegativity and Polynomial Optimization | |
June 26, 2018 | Colloquium, TU Kaiserlautern, Germany. |
Ein neuer Ansatz zu Nichtnegativität und polynomieller Optimierung | |
May 24, 2018 | Colloquium, Universität Siegen, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
May 3, 2018 | Colloquium, Otto von Guericke Universität Magdeburg, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
March 27, 2018 | Colloquium, TU Braunschweig, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
Jan. 17, 2018 | Colloquium, Universität Trier, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
June 12, 2017 | Colloquium, Universität Leipzig, Germany. |
A New Approach to Nonnegativity and Polynomial Optimization | |
Dec. 14, 2016 | Colloquium, University of Massachusetts at Amherst, Amherst, MA. |
A New Approach to Nonnegativity and Polynomial Optimization | |
Oct. 5, 2016 | Colloquium, Sam Houston State University, Huntsville, TX. |
An Introduction to Amoeba Theory | |
Oct. 19, 2015 | Postdoc Colloquium, Texas A&M University, College Station, TX. |
Nonnegative Polynomials and Sums of Squares Supported on Circuits | |
Oct. 9, 2014 | Postdoc Colloquium, Texas A&M University, College Station, TX. |
Roots of Trinomials from the Viewpoint of Amoeba Theory |
Feb. 19, 2018 | BMS-days, Urania, Berlin, Germany. |
An Introduction to Nonnegativity and Polynomial Optimization | |
May 7, 2016 | Math Circle, Texas A&M University, College Station, TX. |
Public Key Cryptography | |
Aug. 8, 2014 | Uni Camp 2014, Saarland University, Saarbrücken, Germany. |
Public Key Kryptoverfahren | |
Aug. 8, 2014 | Uni Camp 2014, Saarland University, Saarbrücken, Germany. |
Mathematik Studieren | |
Oct. 8, 2009 | Math Circle, Goethe University, Frankfurt/Main, Germany. |
Das Art Gallery Problem |