# 2023

A proof system for certifying symmetry and optimality reasoning in integer programming

Optimization Seminar, Imperial College, London, England, December 1, 2023
A Unified Framework for Symmetry Handling

Workshop: Learning from Both Sides Linear and Nonlinear Mixed-Integer Optimization 2023, Mittag-Leffler Institute
Djursholm, Sweden, July 7, 2023
Handling Symmetries in Mixed-Integer Semidefinite Programs

CPAIOR 2023,
Nice, France, May 30, 2023
Relaxation Complexity: Algorithmic Possibilities and Limitations

GMZ 60: Geometry, Topology, Community; Celebrating the 60th birthday of Günter M. Ziegler,
Berlin, Germany, May 19, 2023 (invited talk)

A Unified Framework for Symmetry Handling

Seminar, Delft University of Technology,
Delft, The Netherlands, March 15, 2023 (invited talk)
Relaxation Complexity: Algorithmic Possibilities and Limitations

Dutch Seminar on Optimization,
February 23, 2023 (invited talk)
A Unified Framework for Symmetry Handling

Aussois COW 2023,
Aussois, France, January 10, 2023
# 2022

The role of rationality in integer programming formulations

Discrete Optimization Talks,
November 18, 2022 (invited talk)
The role of rationality in integer programming formulations

Seminar, Tilburg University, The Netherlands,
November 10, 2022 (invited talk)
Symmetry Handling in SCIP---An Overview

Let's SCIP it! A workshop to celebrate 20 year of Solving Constraint Integer Programs,
Berlin, Germany,
November 4, 2022 (invited talk)
Mixed-Integer Programming Techniques for the Minimum Sum-of-squares Clustering Problem,

INFORMS Annual Meeting 2022,
Indianapolis, IN,
November 10, 2022 (invited talk)
Schreier-Sims Cuts meet Stable Set: Exploiting Problem Structure to Derive Symmetry Handling Inequalities

EURO2022,
Espoo, Finland,
July 5, 2022 (invited talk)
Efficient MIP Techniques for Computing the Relaxation Complexity

Workshop on Separating Integer Points in Polyhedra: Theory and Applications,
Eindhoven, The Netherlands,
July 1, 2022
# 2021

Exploiting Subgroup Structures in Symmetry Handling

EURO2021,
Athens, Greece, July 14, 2021 (invited talk)
Computational Aspects of Relaxation Complexity

MIP Workshop 2021,
online, May 26, 2021 (invited talk),
video
Computational Aspects of Relaxation Complexity

IPCO 2021,
Atlanta, Georgia, May 21, 2021
# 2020

Mixed-Integer Programming Techniques for the Connected Max-k-Cut Problem

SCIP Online Workshop 2020,
hosted by University of Exeter, Exeter, England, June 4, 2020 (invited talk)
# 2019

Symretopes and Symresacks: A Framework for Deriving Generic and Problem Specific Symmetry Handling Inequalities

Workshop on Extended Formulations and Symmetries in Integer Programming,
Universidad de O'Higgins, Rancagua, Chile, December 9, 2019 (invited talk)
Strong IP Formulations Need Large Coefficients

OR 2019,
Dresden, Germany, September 6, 2019
Symmetry Handling in Binary Programs: Combining Symretopes and Orbital Fixing

ALOP Colloquium, Trier University, Germany, July 1, 2019 (invited talk)
Strong IP Formulations Need Large Coefficients

N&O Seminar, Centrum Wiskunde & Informatica (CWI), Netherlands, March 27, 2019
Strong IP Formulations Need Large Coefficients

Aussois COW 2019,
Aussois, France, January 9, 2019
# 2018

Symmetry Breaking Polytopes: A Framwork for Symmetry Handling in Binary Programs

ISMP 2018,
Bordeaux, France, July 3, 2018 (invited talk)
Symmetry Breaking Polytopes: A Framwork for Symmetry Handling in Binary Programs

Aussois COW 2018,
Aussois, France, January 12, 2018
# 2017

On the Size of Integer Programs with Bounded Coefficients or Sparse Constraints

FRICO 2017,
Trier, Germany, August 16, 2017
# 2016

Symmetry Handling in Binary Programs via Polyhedral Methods

ICMS 2016,
Berlin, Germany, July 14, 2016
Polytopes Associated with Symmetry Handling

Aussois COW 2016,
Aussois, France, January 5, 2016
# 2015

Polyhedral Symmetry Handling via Fundamental Domains

ISMP 2015,
Pittsburgh, PA, July 15, 2015 (invited talk)
Symmetry Handling via Symmetry Breaking Polytopes

CTW 2015,
Marmara University Istanbul, May 26, 2015
# 2014

Polyhedral description of star colorings

FRICO 2014,
Otto von Guericke Universität Magdeburg, July 30, 2014