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: "efficient solving of quantified inequality constraints over the real numbers"
  Abstract: Let a quantified inequality constraint over the reals be a formula in the first-order predicate language over the structure of the real numbers, where the allowed predicate symbols are $\leq$ and $<$. Solving such constraints is an undecidable problem when allowing function symbols such $\sin$ or $\cos$. In the paper we give an algorithm that terminates with a solution for all, except for very special, pathological inputs. We ensure the practical efficiency of this algorithm by employing constraint programming techniques.

Connected through hyperedge HE-1 (induced by source paper "satisfiability modulo transcendental functions via incremental linearization"):
  with members:
    - "invariant checking of nra transition systems via incremental reduction to lra with euf"
    - "nlcertify a tool for formal nonlinear optimization"
    - "formal verification of nonlinear inequalities with taylor interval approximations"
    - "delta complete decision procedures for satisfiability over the reals"

Connected through hyperedge HE-2 (induced by source paper "simulation based computation of certificates for safety of dynamical systems"):
  with members:
    - "combined global and local search for the falsification of hybrid systems"
    - "optimization modulo theories with linear rational costs"
    - "a survey on continuous time computations"

Connected through hyperedge HE-3 (induced by source paper "spatial symmetry driven pruning strategies for efficient declarative spatial reasoning"):
  with members:
    - "aspmt qs non monotonic spatial reasoning with answer set programming modulo theories"
    - "cognitive interpretation of everyday activities toward perceptual narrative based visuo spatial scene interpretation"

Connected through hyperedge HE-4 (induced by source paper "fuzzy answer set computation via satisfiability modulo theories"):
  with members:
    - "semantical characterizations and complexity of equivalences in answer set programming"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-5 (induced by source paper "quasi decidability of a fragment of the first order theory of real numbers"):
  with members:
    - "robust satisfiability of systems of equations"
    - "extendability of continuous maps is undecidable"
    - "delta decidability over the reals"
    - "effective topological degree computation based on interval arithmetic"
    - "delta complete decision procedures for satisfiability over the reals"
    - "polynomial time computation of homotopy groups and postnikov systems in fixed dimension"
    - "quantifying transversality by measuring the robustness of intersections"
    - "convergent approximate solving of first order constraints by approximate quantifiers"

Connected through hyperedge HE-6 (induced by source paper "a constraint satisfaction framework for executing perceptions and actions in diagrammatic reasoning"):
  with members:
    - "satzilla portfolio based algorithm selection for sat"

Connected through hyperedge HE-7 (induced by source paper "certainty closure reliable constraint reasoning with incomplete or erroneous data"):
  with members:
    - "planning under continuous time and resource uncertainty a challenge for ai"
    - "scenario based stochastic constraint programming"
    - "stochastic constraint programming"
    - "stochastic constraint programming a scenario based approach"
    - "the essence of constraint propagation"

Connected through hyperedge HE-8 (induced by source paper "an efficient algorithm for a sharp approximation of universally quantified inequalities"):
  with members:
    - "branch and prune search strategies for numerical constraint solving"
    - "interval constraint solving for camera control and motion planning"

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)