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: "existence problem of telescopers beyond the bivariate case"
  Abstract: In this paper, we solve the existence problem of telescopers for rational functions in three discrete variables. We reduce the problem to that of deciding the summability of bivariate rational functions, which has been solved recently. The existence criteria we present is needed for detecting the termination of Zeilberger's algorithm to the function classes studied in this paper.

Connected through hyperedge HE-1 (induced by source paper "on the existence of telescopers for rational functions in three variables"):
  with members:
    - "constructing minimal telescopers for rational functions in three discrete variables"
    - "existence problem of telescopers for rational functions in three variables the mixed cases"
    - "bivariate extensions of abramov s algorithm for rational summation"
    - "some open problems related to creative telescoping"
    - "computing periods of rational integrals"
    - "an algorithm for deciding the summability of bivariate rational functions"
    - "testing equivalence of polynomials under shifts"
    - "creative telescoping for rational functions using the griffiths dwork method"

Connected through hyperedge HE-2 (induced by source paper "constructing minimal telescopers for rational functions in three discrete variables"):
  with members:
    - "reduction based creative telescoping for algebraic functions"
    - "reduction based creative telescoping for fuchsian d finite functions"
    - "new bounds for hypergeometric creative telescoping"
    - "multiple binomial sums"
    - "a modified abramov petkovsek reduction and creative telescoping for hypergeometric terms"
    - "an algorithm for deciding the summability of bivariate rational functions"
    - "hermite reduction and creative telescoping for hyperexponential functions"
    - "creative telescoping for rational functions using the griffiths dwork method"

Connected through hyperedge HE-3 (induced by source paper "existence problem of telescopers for rational functions in three variables the mixed cases"):
  with members:
    - "bivariate extensions of abramov s algorithm for rational summation"
    - "an algorithm for deciding the summability of bivariate rational functions"
    - "parallel telescoping and parameterized picard vessiot theory"
    - "testing equivalence of polynomials under shifts"
    - "telescopers for rational and algebraic functions via residues"
    - "on the existence of telescopers for mixed hypergeometric terms"
    - "a non holonomic systems approach to special function identities"
    - "parameterized telescoping proves algebraic independence of sums"

Connected through hyperedge HE-4 (induced by source paper "bivariate extensions of abramov s algorithm for rational summation"):
  with members:
    - "reduction based creative telescoping for algebraic functions"
    - "reduction based creative telescoping for fuchsian d finite functions"
    - "some open problems related to creative telescoping"
    - "an algorithm for deciding the summability of bivariate rational functions"
    - "hermite reduction and creative telescoping for hyperexponential functions"
    - "telescopers for rational and algebraic functions via residues"
    - "on the existence of telescopers for mixed hypergeometric terms"

Connected through hyperedge HE-5 (induced by source paper "some open problems related to creative telescoping"):
  with members:
    - "efficient algorithms for mixed creative telscoping"
    - "computing hypergeometric solutions of second order linear differential equations using quotients of formal solutions and integral bases"
    - "reduction based creative telescoping for algebraic functions"
    - "new bounds for hypergeometric creative telescoping"
    - "multiple binomial sums"
    - "a modified abramov petkovsek reduction and creative telescoping for hypergeometric terms"
    - "an algorithm for deciding the summability of bivariate rational functions"
    - "a generalized apagodu zeilberger algorithm"

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.SC(Symbolic Computation)