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: "context free commutative grammars with integer counters and resets"
  Abstract: We study the computational complexity of reachability, coverability and inclusion for extensions of context-free commutative grammars with integer counters and reset operations on them. Those grammars can alternatively be viewed as an extension of communication-free Petri nets. Our main results are that reachability and coverability are inter-reducible and both NP-complete. In particular, this class of commutative grammars enjoys semi-linear reachability sets. We also show that the inclusion problem is, in general, coNEXP-complete and already $\Pi_2^\text{P}$-complete for grammars with only one non-terminal symbol. Showing the lower bound for the latter result requires us to develop a novel $\Pi_2^\text{P}$-complete variant of the classic subset sum problem.

Connected through hyperedge HE-1 (induced by source paper "expressive power of broadcast consensus protocols"):
  with members:
    - "affine extensions of integer vector addition systems with states"
    - "controlling a population"
    - "space optimal majority in population protocols"
    - "time space trade offs in population protocols"
    - "the power of well structured systems"
    - "the computational power of population protocols"

Connected through hyperedge HE-2 (induced by source paper "composition problems for braids membership identity and freeness"):
  with members:
    - "weighted automata on infinite words in the context of attacker defender games"
    - "automata and reduced words in the free group"
    - "braid group cryptography"

Connected through hyperedge HE-3 (induced by source paper "well behaved transition systems"):
  with members:
    - "reachability in two dimensional vector addition systems with states is pspace complete"
    - "fixed dimensional energy games are in pseudo polynomial time"
    - "integer vector addition systems with states"
    - "kleene algebras and semimodules for energy problems"
    - "the power of well structured systems"
    - "forward analysis for wsts part ii complete wsts"
    - "multiply recursive upper bounds with higman s lemma"
    - "forward analysis for wsts part i completions"

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.FL(Formal Languages and Automata Theory)