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: "on the quantifier free dynamic complexity of reachability"
  Abstract: The dynamic complexity of the reachability query is studied in the dynamic complexity framework of Patnaik and Immerman, restricted to quantifier-free update formulas.It is shown that, with this restriction, the reachability query cannot be dynamically maintained, neither with binary auxiliary relations nor with unary auxiliary functions, and that ternary auxiliary relations are more powerful with respect to graph queries than binary auxiliary relations.Further inexpressibility results are given for the reachability query in a different setting as well as for a syntactical restriction of quantifier-free update formulas. Moreover inexpressibility results for some other queries are presented.

Connected through hyperedge HE-1 (induced by source paper "dynamic complexity of parity exists queries"):
  with members:
    - "a strategy for dynamic programs start over and muddle through"
    - "dynamic complexity under definable changes"
    - "the dynamic descriptive complexity of k clique"
    - "reachability is in dynfo"

Connected through hyperedge HE-2 (induced by source paper "dynamic complexity under definable changes"):
  with members:
    - "reachability and distances under multiple changes"
    - "gmark schema driven generation of graphs and queries"
    - "dynamic conjunctive queries"
    - "a strategy for dynamic programs start over and muddle through"
    - "the dynamic descriptive complexity of k clique"
    - "reachability is in dynfo"
    - "dbtoaster higher order delta processing for dynamic frequently fresh views"

Connected through hyperedge HE-3 (induced by source paper "dynamic conjunctive queries"):
  with members:
    - "dbtoaster higher order delta processing for dynamic frequently fresh views"

Connected through hyperedge HE-4 (induced by source paper "the dynamic descriptive complexity of k clique"):
  with members:
    - "dynamic conjunctive queries"

Connected through hyperedge HE-5 (induced by source paper "reachability is in dynfo"):
  with members:
    - "dynamic graph queries"
    - "dynamic complexity of planar 3 connected graph isomorphism"
    - "space complexity of perfect matching in bounded genus bipartite graphs"
    - "deterministically isolating a perfect matching in bipartite planar graphs"

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)