activity
20112026
most citedKnapsack in graph groups, HNN-extensions and amalgamated products

14 citations · 86 across the 43 of their papers we have counts for

collaborators

60 papers

cs.FL2026

Infinite-state Games with Energy Objectives Beyond Counters

Irmak Sağlam, Georg Zetzsche

In the theory of games on infinite-state arenas, there is a stark contrast between (i) recursion-based models such as pushdown systems and extensions on one hand, and (ii) counter-…

cs.FL2026

The complexity of downward closures of indexed languages

Richard Mandel, Corto Mascle, Georg Zetzsche

Indexed languages are a classical notion in formal language theory, which has attracted attention in recent decades due to its role in higher-order model checking: They are precise…

cs.FL2025

Bounded treewidth, multiple context-free grammars, and downward closures

C. Aiswarya, Pascal Baumann, Prakash Saivasan +2

The reachability problem in multi-pushdown automata (MPDA) has many applications in static analysis of recursive programs. An example is safety verification of multi-threaded recur…

cs.LO2025

Fast Ramsey Quantifier Elimination in LIRA (with applications to liveness checking)

Kilian Lichtner, Pascal Bergsträßer, Moses Ganardi +2

Ramsey quantifiers have recently been proposed as a unified framework for handling properties of interests in program verification involving proofs in the form of infinite cliques,…

cs.FL2025

A Complexity Dichotomy for Semilinear Target Sets in Automata with One Counter

Yousef Shakiba, Henry Sinclair-Banks, Georg Zetzsche

In many kinds of infinite-state systems, the coverability problem has significantly lower complexity than the reachability problem. In order to delineate the border of computationa…

cs.CL2025

The Counting Power of Transformers

Marco Sälzer, Chris Köcher, Alexander Kozachinskiy +2

Counting properties (e.g. determining whether certain tokens occur more than other tokens in a given input text) have played a significant role in the study of expressiveness of tr…