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: "reachability is in dynfo"
  Abstract: Patnaik and Immerman introduced the dynamic complexity class DynFO of database queries that can be maintained by first-order dynamic programs with the help of auxiliary relations under insertions and deletions of edges (Patnaik and Immerman 1997). This article confirms their conjecture that the Reachability query is in DynFO. #R##N#As a byproduct it is shown that the rank of a matrix with small values can be maintained in DynFO(+,x). It is further shown that the (size of the) maximum matching of a graph can be maintained in non-uniform DynFO, another extension of DynFO, with non-uniform initialisation of the auxiliary relations.

Connected through hyperedge HE-1 (induced by source paper "coarse grained complexity for dynamic algorithms"):
  with members:
    - "simple dynamic algorithms for maximal independent set and other problems"
    - "fully dynamic maximal independent set with sublinear update time"
    - "more consequences of falsifying seth and the orthogonal vectors conjecture"
    - "improved algorithms for fully dynamic maximal independent set"
    - "expander decomposition and pruning faster stronger and simpler"
    - "fully dynamic approximate maximum matching and minimum vertex cover in o log 3 n worst case update time"
    - "dynamic algorithms for graph coloring"
    - "tight cell probe bounds for succinct boolean matrix vector multiplication"

Connected through hyperedge HE-2 (induced by source paper "dynamic complexity meets parameterised algorithms"):
  with members:
    - "on the descriptive complexity of color coding"
    - "reoptimization of parameterized problems"
    - "a strategy for dynamic programs start over and muddle through"
    - "dynamic parameterized problems and algorithms"
    - "fast parallel fixed parameter algorithms via color coding"
    - "point line cover the easy kernel is essentially tight"

Connected through hyperedge HE-3 (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"
    - "on the quantifier free dynamic complexity of reachability"

Connected through hyperedge HE-4 (induced by source paper "the space efficient core of vadalog"):
  with members:
    - "query rewriting and optimization for ontological databases"
    - "sound complete and minimal ucq rewriting for existential rules"

Connected through hyperedge HE-5 (induced by source paper "on the expressive power of query languages for matrices"):
  with members:
    - "on matrices and k relations"
    - "on the expressive power of linear algebra on graphs"
    - "laradb a minimalist kernel for linear and relational algebra computation"
    - "embedding tarskian semantics in vector spaces"
    - "towards linear algebra over normalized data"
    - "a linear algebraic approach to datalog evaluation"
    - "rank logic is dead long live rank logic"
    - "faq questions asked frequently"

Connected through hyperedge HE-6 (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"
    - "on the quantifier free dynamic complexity of reachability"
    - "dbtoaster higher order delta processing for dynamic frequently fresh views"

Connected through hyperedge HE-7 (induced by source paper "a strategy for dynamic programs start over and muddle through"):
  with members:
    - "reachability and distances under multiple changes"
    - "dynamic complexity under definable changes"
    - "where first order and monadic second order logic coincide"

Connected through hyperedge HE-8 (induced by source paper "courcelle s theorem made dynamic"):
  with members:
    - "dynamic graph queries"

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)