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 "singular surfaces and cusps in symmetric planar 3 rpr manipulators"):
  Abstract: We study in this paper a class of 3-RPR manipulators for which the direct kinematic problem (DKP) is split into a cubic problem followed by a quadratic one. These manipulators are geometrically characterized by the fact that the moving triangle is the image of the base triangle by an indirect isometry. We introduce a specific coordinate system adapted to this geometric feature and which is also well adapted to the splitting of the DKP. This allows us to obtain easily precise descriptions of the singularities and of the cusp edges. These latter second order singularities are important for nonsingular assembly mode changing. We show how to sort assembly modes and use this sorting for motion planning in the joint space.

Includes members:
  Member "kinematic analysis of a class of analytic planar 3 rpr parallel manipulators":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "cusp points in the parameter space of degenerate 3 rpr planar parallel manipulators")
  Member "non singular assembly mode changing motions for 3 rpr parallel manipulators":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "non singular assembly mode changing trajectories in the workspace for the 3 rps parallel robot")
  Member "definition sets for the direct kinematics of parallel manipulators":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "non singular assembly mode changing trajectories in the workspace for the 3 rps parallel robot")
  Member "degeneracy study of the forward kinematics of planar 3 rpr parallel manipulators":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "cusp points in the parameter space of degenerate 3 rpr planar parallel manipulators")
  Member "singular curves and cusp points in the joint space of 3 rpr parallel manipulators":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "a study of the singularity locus in the joint space of planar parallel manipulators special focus on cusps and nodes")
  Member "workspace and assembly modes in fully parallel manipulators a descriptive study":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "a study of the singularity locus in the joint space of planar parallel manipulators special focus on cusps and nodes")

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.RO(Robotics)