[HTML][HTML] Optimizing reachability sets in temporal graphs by delaying

A Deligkas, I Potapov - Information and Computation, 2022 - Elsevier
A temporal graph is a dynamic graph where every edge is assigned a set of integer time
labels that indicate at which discrete time step the edge is available. In this paper, we study …

Linear-time temporal logics with Presburger constraints: an overview★

S Demri - Journal of Applied Non-Classical Logics, 2006 - Taylor & Francis
We present an overview of linear-time temporal logics with Presburger constraints whose
models are sequences of tuples of integers. Such formal specification languages are well …

Model-checking CTL* over flat Presburger counter systems

S Demri, A Finkel, V Goranko… - Journal of Applied Non …, 2010 - Taylor & Francis
This paper studies model-checking of fragments and extensions of CTL* on infinitestate
counter systems, where the states are vectors of integers and the transitions are determined …

On undecidability bounds for matrix decision problems

P Bell, I Potapov - Theoretical Computer Science, 2008 - Elsevier
In this paper we consider several reachability problems such as vector reachability,
membership in matrix semigroups and reachability problems in piecewise linear maps …

Matrix Semigroup Freeness Problems in SL

SK Ko, I Potapov - International Conference on Current Trends in Theory …, 2017 - Springer
In this paper we study decidability and complexity of decision problems on matrices from the
special linear group SL (2, Z). In particular, we study the freeness problem: given a finite set …

Periodic and infinite traces in matrix semigroups

P Bell, I Potapov - International Conference on Current Trends in Theory …, 2008 - Springer
In this paper we provide several new results concerning word and matrix semigroup
problems using counter automaton models. As a main result, we prove a new version of …

[HTML][HTML] Weighted automata on infinite words in the context of Attacker–Defender games

V Halava, T Harju, R Niskanen, I Potapov - Information and Computation, 2017 - Elsevier
The paper is devoted to several infinite-state Attacker–Defender games with reachability
objectives. We prove the undecidability of checking for the existence of a winning strategy in …

Synchronizing weighted automata

S Iván - arXiv preprint arXiv:1403.5729, 2014 - arxiv.org
We introduce two generalizations of synchronizability to automata with transitions weighted
in an arbitrary semiring K=(K,+,*, 0, 1).(or equivalently, to finite sets of matrices in K^ nxn.) …

Reachability in Linear Recurrence Automata

M Hirvensalo, A Kawamura, I Potapov… - … on Reachability Problems, 2024 - Springer
This paper studies the linear recurrence automata model in which multiple linear
recurrences can be used to generate sequences of numbers. We parameterised the model …

Schützenberger and Eilenberg theorems for words on linear orderings

N Bedon, C Rispal - Developments in Language Theory: 9th International …, 2005 - Springer
In the case of finite words, a Schützenberger theorem proves that the star-free sets are
exactly the languages recognized by finite aperiodic semigroups. This gives an algebraic …