human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "reasoning about data repetitions with counter systems"
  Abstract: We study linear-time temporal logics interpreted over data words with#N#multiple attributes. We restrict the atomic formulas to equalities of attribute#N#values in successive positions and to repetitions of attribute values in the#N#future or past. We demonstrate correspondences between satisfiability problems#N#for logics and reachability-like decision problems for counter systems. We show#N#that allowing/disallowing atomic formulas expressing repetitions of values in#N#the past corresponds to the reachability/coverability problem in Petri nets.#N#This gives us 2EXPSPACE upper bounds for several satisfiability problems. We#N#prove matching lower bounds by reduction from a reachability problem for a#N#newly introduced class of counter systems. This new class is a succinct version#N#of vector addition systems with states in which counters are accessed via#N#pointers, a potentially useful feature in other contexts. We strengthen further#N#the correspondences between data logics and counter systems by characterizing#N#the complexity of fragments, extensions and variants of the logic. For#N#instance, we precisely characterize the relationship between the number of#N#attributes allowed in the logic and the number of counters needed in the#N#counter system.

Connected through hyperedge HE-1 (induced by source paper "reachability in fixed dimension vector addition systems with states"):
  with members:
    - "reachability in vector addition systems is primitive recursive in fixed dimension"
    - "linear equations with ordered data"
    - "the reachability problem for petri nets is not elementary"
    - "reachability in two dimensional unary vector addition systems with states is nl complete"
    - "reachability in two dimensional vector addition systems with states is pspace complete"
    - "ordered navigation on multi attributed data words"
    - "algorithmic verification of asynchronous programs"

Connected through hyperedge HE-2 (induced by source paper "on functions weakly computable by pushdown petri nets and related systems"):
  with members:
    - "reachability in vector addition systems is primitive recursive in fixed dimension"
    - "the reachability problem for petri nets is not elementary"
    - "complexity hierarchies beyond elementary"
    - "on boundedness problems for pushdown vector addition systems"
    - "on the coverability problem for pushdown vector addition systems in one dimension"
    - "the power of priority channel systems"
    - "the reachability problem for vector addition systems with a stack is not elementary"
    - "approximating petri net reachability along context free traces"

Connected through hyperedge HE-3 (induced by source paper "the reachability problem for petri nets is not elementary"):
  with members:
    - "reachability in vector addition systems is primitive recursive in fixed dimension"
    - "linear equations with ordered data"
    - "verifas a practical verifier for artifact systems"
    - "complexity hierarchies beyond elementary"
    - "reachability in two dimensional unary vector addition systems with states is nl complete"
    - "demystifying reachability in vector addition systems"
    - "nonelementary complexities for branching vass mell and extensions"
    - "reachability in two dimensional vector addition systems with states is pspace complete"

Connected through hyperedge HE-4 (induced by source paper "scalar and vectorial mu calculus with atoms"):
  with members:
    - "modal logics for nominal transition systems"
    - "smt solving for functional programming over infinite structures"
    - "automata theory in nominal sets"
    - "alternating register automata on finite words and trees"
    - "alternating automata on data trees and xpath satisfiability"
    - "ltl with the freeze quantifier and register automata"
    - "on the freeze quantifier in constraint ltl decidability and complexity"

Connected through hyperedge HE-5 (induced by source paper "playing with repetitions in data words using energy games"):
  with members:
    - "perfect half space games"
    - "solving parity games on integer vectors"
    - "strategy synthesis for multi dimensional quantitative objectives"
    - "reachability games on extended vector addition systems with states"
    - "temporal logics on words with multiple data values"
    - "ltl with the freeze quantifier and register automata"

Connected through hyperedge HE-6 (induced by source paper "demystifying reachability in vector addition systems"):
  with members:
    - "complexity hierarchies beyond elementary"
    - "reachability in two dimensional vector addition systems with states is pspace complete"
    - "an approach to computing downward closures"
    - "complexity bounds for ordinal based termination"
    - "the reachability problem for vector addition systems with a stack is not elementary"
    - "algorithmic verification of asynchronous programs"
    - "ackermannian and primitive recursive bounds with dickson s lemma"
    - "on selective unboundedness of vass"

Connected through hyperedge HE-7 (induced by source paper "on freeze ltl with ordered attributes"):
  with members:
    - "complexity hierarchies beyond elementary"
    - "demystifying reachability in vector addition systems"
    - "ordered navigation on multi attributed data words"
    - "the power of priority channel systems"
    - "alternating register automata on finite words and trees"
    - "temporal logics on words with multiple data values"
    - "ltl with the freeze quantifier and register automata"
    - "on the freeze quantifier in constraint ltl decidability and complexity"

Connected through hyperedge HE-8 (induced by source paper "ordered navigation on multi attributed data words"):
  with members:
    - "two variable logic with two order relations"
    - "temporal logics on words with multiple data values"
    - "ltl with the freeze quantifier and register automata"
    - "on the freeze quantifier in constraint ltl decidability and complexity"

Question: Please tell me which class the center node 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)