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: "almost periodicity and the timestamp of timed automata"
  Abstract: Given a non-deterministic timed automaton with silent transitions (eNTA), we show that after an initial stage it becomes time-periodic. After computing the periodic parameters, we construct a finite almost periodic augmented region automaton, which includes a clock measuring the global time. In the next step we construct the timestamp of the automaton: the union of all its observable timed traces, which contains all the dates on which events occur - a generalization of the reachability problem. The timestamp of each event is an almost periodic subset of the non-negative reals. We also construct a simple deterministic timed automaton with the same timestamp as the given timed automaton, in contrast to the fact that the timed automaton itself may be non-determinizable. One application is the decidability of the $1$-bounded language inclusion problem for eNTA. Another is a partial method, which is not bounded by time or number of steps, for showing the non-inclusion of languages of timed automata.

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)