activity
20192026
most citedPerfect Matching in Random Graphs is as Hard as Tseitin

1 citations · 2 across the 9 of their papers we have counts for

collaborators

9 papers

cs.GT2026

On Cutting Cakes and Crossing Curves

Alexandros Hollender, Gilbert Maystre, Kilian Risse

We consider the classic envy-free cake-cutting problem where the goal is to cut and allocate a divisible resource among a set of agents in a way that avoids any envy between them.…

cs.CC2026

Superpolynomial Length Lower Bounds for Tree-Like Semantic Proof Systems with Bounded Line Size

Susanna F. de Rezende, David Engström, Yassine Ghannane +1

We prove superpolynomial length lower bounds for the semantic tree-like Frege refutation system with bounded line size. Concretely, for any function $n^{2-\varepsilon} \leq s(n) \l…

cs.CC2025

Graph Colouring Is Hard on Average for Polynomial Calculus and Nullstellensatz

Jonas Conneryd, Susanna F. de Rezende, Jakob Nordström +2

We prove that polynomial calculus (and hence also Nullstellensatz) over any field requires linear degree to refute that sparse random regular graphs, as well as sparse Erdős-Rényi…

cs.CC2024

Supercritical Tradeoffs for Monotone Circuits

Mika Göös, Gilbert Maystre, Kilian Risse +1

We exhibit a monotone function computable by a monotone circuit of quasipolynomial size such that any monotone circuit of polynomial depth requires exponential size. This is the fi…

cs.CC2024

Clique Is Hard on Average for Sherali-Adams with Bounded Coefficients

Susanna F. de Rezende, Aaron Potechin, Kilian Risse

We prove that Sherali-Adams with polynomially bounded coefficients requires proofs of size to rule out the existence of an -clique in Erdős-Rényi random graphs…

cs.CC2023

Sum-of-Squares Lower Bounds for the Minimum Circuit Size Problem

Per Austrin, Kilian Risse

We prove lower bounds for the Minimum Circuit Size Problem (MCSP) in the Sum-of-Squares (SoS) proof system. Our main result is that for every Boolean function $f: \{0,1\}^n \righta…

cs.CC2022

On bounded depth proofs for Tseitin formulas on the grid; revisited

Johan Håstad, Kilian Risse

We study Frege proofs using depth- Boolean formulas for the Tseitin contradiction on grids. We prove that if each line in the proof is of size then the number o…

cs.CC2022★ 1 cited

Perfect Matching in Random Graphs is as Hard as Tseitin

Per Austrin, Kilian Risse

We study the complexity of proving that a sparse random regular graph on an odd number of vertices does not have a perfect matching, and related problems involving each vertex bein…

cs.CC2019★ 1 cited

Exponential Resolution Lower Bounds for Weak Pigeonhole Principle and Perfect Matching Formulas over Sparse Graphs

Susanna F. de Rezende, Jakob Nordström, Kilian Risse +1

We show exponential lower bounds on resolution proof length for pigeonhole principle (PHP) formulas and perfect matching formulas over highly unbalanced, sparse expander graphs, th…