human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "model checking flat freeze ltl on one counter automata"):
  Abstract: Freeze LTL is a temporal logic with registers that is suitable for specifying#N#properties of data words. In this paper we study the model checking problem for#N#Freeze LTL on one-counter automata. This problem is known to be undecidable in#N#general and PSPACE-complete for the special case of deterministic one-counter#N#automata. Several years ago, Demri and Sangnier investigated the model checking#N#problem for the flat fragment of Freeze LTL on several classes of counter#N#automata and posed the decidability of model checking flat Freeze LTL on#N#one-counter automata as an open problem. In this paper we resolve this problem#N#positively, utilising a known reduction to a reachability problem on#N#one-counter automata with parameterised equality and disequality tests. Our#N#main technical contribution is to show decidability of the latter problem by#N#translation to Presburger arithmetic.

Includes members:
  Member "reachability in two clock timed automata is pspace complete":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "life is random time is not markov decision processes with window objectives")
  Member "ltl with the freeze quantifier and register automata":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "on computability of data word functions defined by transducers")
  Member "on the freeze quantifier in constraint ltl decidability and complexity":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "modular path queries with arithmetic")

Question: Please tell me which class the source paper belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.LO(Logic in Computer Science)