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Program

The IPCO 2026 Conference will be held on June 17-19 in the Elettra room at Palazzo della Salute (90 Via San Francesco, Padova). Please note that this venue is distinct from the summer school site, which is approximately a 15-minute walk away (see the Local Information page).

Wednesday, June 17, 2026

8:15–8:45 Registration
8:45–9:00 Conference opening
9:00–10:30
  • Jannik Matuschke, Stronger Hardness for Maximum Robust Flow and Randomized Network Interdiction
  • Martin Nägele, Christian Nöbel, Rico Zenklusen, On the Complexity of the Odd-Red Bipartite Perfect Matching Polytope
  • Amotz Bar-Noy, Igor Kalinichev, David Peleg, Dror Rawitz, Degree Realization with Minimum Dominating Set
10:30–11:00 Coffee break
11:00–12:30
  • Meike Neuwohner, Vera Traub, Rico Zenklusen, Approximation Schemes for Planar Graph Connectivity Problems
  • Tasuku Soma, Mingquan Ye, Yuichi Yoshida, O(log n)-Approximation Algorithms for Bipartiteness Ratio
  • Chenglin Fan, Dahoon Lee, Euiwoong Lee, 1.64-Approximation for Chromatic Correlation Clustering via Chromatic Cluster LP
12:30–14:00 Lunch break (suggestions will be available soon)
14:00–15:30
  • Jiaqi Wang, Weijun Xie, Closing the Gap: Efficient Algorithms for Discrete Wasserstein Barycenters
  • Anupam Gupta, Benjamin Moseley, Rudy Zhou, Bayesian Probing on Graphs
  • Ryan Cory-Wright, Jean Pauphilet, Improved Approximation Algorithms for Orthogonally Constrained Problems Using Semidefinite Optimization
15:30–16:00 Coffee break
16:00–17:30
  • Alexander Lindermayr, Zhenwei Liu, Nicole Megow, Polytope Scheduling with Groups: Unified Models and Optimal Guarantees
  • Daniel Blankenburg, Antonia Ellerbrock, Thomas Kesselheim, Jens Vygen, An Efficient Algorithm for Minimizing Ordered Norms in Fractional Load Balancing
  • David Aleman Espinosa, Naveen Garg, Sharat Ibrahimpur, Neil Olver, Chaitanya Swamy, Stochastic Load Balancing with Machine Reservations
18:00–20:00 Poster session and welcome reception

Thursday, June 18, 2026

9:00–10:30
  • Daniel Dadush, Stefan Kober, Zhuan Khye Koh, On Circuit Diameter and Straight Line Complexity
  • Stefan Kuhlmann, Robert Weismantel, A Threshold Phenomenon for the Shortest Lattice Vector Problem in the Infinity Norm
  • Anouk Brose, Jesús De Loera, Gennadiy Averkov, Antonio Torres, Gyivan Lopez-Campos, On Lattice Diameter Segments: Algorithms and Structure
10:30–11:00 Coffee break
11:00–12:30
  • Marcin Briański, Alexandra Lassota, Kristýna Pekárková, Michał Pilipczuk, Janina Reuter, On Integer Programs That Look Like Paths
  • Alexandra Lassota, Koen Ligthart, Solving 4-Block Integer Linear Programs Faster Using Affine Decompositions of the Right-Hand Sides
  • Boyang Han, Aleksandr M. Kazachkov, The Strength of Root Cuts in an Extended Abstract Branch-and-Cut Model
12:30–14:00 Lunch break (suggestions will be available soon)
14:00–15:30
  • Christopher Hojny, Cédric Roy, A Framework for Handling and Exploiting Symmetry in Benders' Decomposition
  • Annika Jäger, Marc E. Pfetsch, Structure-Preserving Symmetry Presolving for Mixed-Binary Linear Problems
  • Yuri Faenza, Victor Verdugo, José Verschae, Matias Villagra, Linear Programming Hierarchies Collapse under Symmetry
15:30–16:00 Coffee break
16:00–17:30
  • Miguel Bosch-Calvo, Fabrizio Grandoni, Yusuke Kobayashi, Takashi Noguchi, A PTAS for Weighted Triangle-free 2-Matching
  • Zachary Friggstad, Tobias Mömke, Approximating Multiple-Depot Capacitated Vehicle Routing via LP Rounding
  • Tullio Villa, Eleonora Vercesi, Janos Barta, Monaldo Mastrolilli, The Integrality Gap of the Traveling Salesman Problem is 4/3 if the LP Solution Has at Most n+6 Non-Zero Components
19:00 Social dinner

Friday, June 19, 2026

9:00–10:30
  • Kristóf Bérczi, Karthekeyan Chandrasekaran, Tamás Király, Daniel Szabo, {s,t}-Separating Principal Partition Sequence of Submodular Functions
  • Stephen Arndt, Ben Moseley, Kirk Pruhs, Michael Zlatin, Efficiently Coloring the Intersection of a General Matroid and Combinatorial Matroids
  • Christoph Hertrich, Stefan Kober, Georg Loho, Arithmetic Circuits and Neural Networks for Regular Matroids
10:30–11:00 Coffee break
11:00–12:30
  • Karthekeyan Chandrasekaran, Chandra Chekuri, Weihang Wang, Weihao Zhu, Hedgegraph Polymatroids
  • Chien-Chung Huang, Naonori Kakimura, Yusuke Kobayashi, Tatsuya Terao, Polynomial Kernels with Reachablity for Weighted d-Matroid Intersection
  • Aditi Dudeja, Mara Grilnberger, A Weighted-To-Unweighted Reduction for Matroid Intersection
12:30–14:00 Lunch break (suggestions will be available soon)
14:00–15:30
  • Mahtab Alghasi, Bertrand Guenin, Levent Tuncel, The Local Dyadic Conjecture
  • Siyue Liu, Olha Silina, Lattice Structure and Efficient Basis Construction for Strongly Connected Orientations
  • Nagisa Sugishita, Margarida Carvalho, Complexity of Bilevel Linear Programming with a Single Upper-Level Variable