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 "timed discrete event systems are synchronous product structures"):
  Abstract: In this work, we show that the model of timed discrete-event systems (TDES) proposed by Brandin and Wonham is essentially a synchronous product structure. This resolves an open problem that has remained unaddressed for the past 25 years and has its application in developing a more efficient timed state-tree structures (TSTS) framework. The proof is constructive in the sense that an explicit synchronous production rule is provided to generate a TDES from the activity automaton and the timer automata after a suitable transformation of the model.

Includes members:
  Member "delay robustness in distributed control of timed discrete event systems based on supervisor localisation":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "supervisor localization of timed discrete event systems under partial observation and communication delay")
  Member "supervision localization of timed discrete event systems":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "failsafe mechanism design of multicopters based on supervisory control theory")

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.SY(Systems and Control)