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 "a new coinductive confluence proof for infinitary lambda calculus"):
  Abstract: We present a new and formal coinductive proof of confluence and normalisation of B\"ohm reduction in infinitary lambda calculus. The proof is simpler than previous proofs of this result. The technique of the proof is new, i.e., it is not merely a coinductive reformulation of any earlier proofs. We formalised the proof in the Coq proof assistant.

Includes members:
  Member "coinductive foundations of infinitary rewriting and infinitary equational logic":
    also connected through other hyperedges:
      (none)
  Member "strict ideal completions of the lambda calculus":
    also connected through other hyperedges:
      (none)
  Member "coinduction an elementary approach":
    also connected through other hyperedges:
      (none)
  Member "partial order infinitary term rewriting":
    also connected through other hyperedges:
      (none)
  Member "nominal coalgebraic data types with applications to lambda calculus":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "on the behaviour of coalgebras with side effects and algebras with effectful iteration")
  Member "on streams that are finitely red":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "coinduction an elementary approach")
  Member "resumptions weak bisimilarity and big step semantics for while with interactive i o an exercise in mixed induction coinduction":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "interaction trees representing recursive and impure programs in coq")
  Member "infinitary combinatory reduction systems normalising reduction strategies":
    also connected through other hyperedges:
      (none)

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.LO(Logic in Computer Science)