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: "formal relationships between geometrical and classical models for concurrency"
  Abstract: A wide variety of models for concurrent programs has been proposed during the past decades, each one focusing on various aspects of computations: trace equivalence, causality between events, conflicts and schedules due to resource accesses, etc. More recently, models with a geometrical flavor have been introduced, based on the notion of cubical set. These models are very rich and expressive since they can represent commutation between any number of events, thus generalizing the principle of true concurrency. While they are emerging as a central tool in concurrency, which is very promising because they make possible the use of techniques from algebraic topology in order to study concurrent computations, they have not yet been precisely related to the previous models, and the purpose of this paper is to fill this gap. In particular, we describe an adjunction between Petri nets and cubical sets which extends the previously known adjunction between Petri nets and asynchronous transition systems by Nielsen and Winskel.

Connected through hyperedge HE-1 (induced by source paper "weak equivalence of higher dimensional automata"):
  with members:
    - "topological abstraction of higher dimensional automata"
    - "weak morphisms of higher dimensional automata"

Connected through hyperedge HE-2 (induced by source paper "directed homotopy in non positively curved spaces"):
  with members:
    - "towards 3 dimensional rewriting theory"

Connected through hyperedge HE-3 (induced by source paper "higher dimensional automata modeling shared variable systems"):
  with members:
    - "topological abstraction of higher dimensional automata"
    - "weak morphisms of higher dimensional automata"

Connected through hyperedge HE-4 (induced by source paper "topological abstraction of higher dimensional automata"):
  with members:
    - "weak morphisms of higher dimensional automata"

Connected through hyperedge HE-5 (induced by source paper "extensions of configuration structures"):
  with members:
    - "the glory of the past and geometrical concurrency"
    - "a logic for true concurrency"
    - "a logic with reverse modalities for history preserving bisimulations"
    - "configuration structures event structures and petri nets"

Connected through hyperedge HE-6 (induced by source paper "weak morphisms of higher dimensional automata"):
  with members:
    - "history preserving bisimilarity for higher dimensional automata via open maps"

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.DC(Distributed, Parallel, and Cluster Computing)