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: "soundness of unravelings for conditional term rewriting systems via ultra properties related to linearity"
  Abstract: Unravelings are transformations from conditional term rewriting systems (CTRSs) into unconditional term rewriting systems (TRSs) over extended signatures. They are complete, but in general, not sound w.r.t. reduction. Here, soundness w.r.t. reduction for a CTRS means that for every term over the original signature of the CTRS, if the corresponding unraveled TRS reduces the term to a term over the original signa- ture, then so does the original CTRS. In this paper, we show that an optimized variant of Ohlebusch's unraveling for deterministic CTRSs is sound w.r.t. reduction if the correspond- ing unraveled TRSs are left-linear, or both right-linear and non-erasing. Then, we show that soundness of the variant implies soundness of Ohlebusch's unraveling, and show that soundness of Marchiori's unravelings for join and normal CTRSs also implies soundness of Ohlebusch's unraveling. Finally, we show that soundness of a transformation proposed by Sanut¸ua and Rosu for deterministic CTRSs implies soundness of Ohlebusch's unraveling.

Connected through hyperedge HE-1 (induced by source paper "reversible computation in term rewriting"):
  with members:
    - "reachability analysis of innermost rewriting"
    - "a synthesis of the procedural and declarative styles of interactive theorem proving"
    - "automated complexity analysis based on the dependency pair method"
    - "a structural approach to reversible computation"

Connected through hyperedge HE-2 (induced by source paper "sound structure preserving transformation for weakly left linear deterministic conditional term rewriting systems"):
  with members:
    - "a synthesis of the procedural and declarative styles of interactive theorem proving"

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.LO(Logic in Computer Science)