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: "algebraic independence of cyclotomic harmonic sums"
  Abstract: An expression in terms of (cyclotomic) harmonic sums can be simplified by the quasi-shuffle algebra in terms of the so-called basis sums. By construction, these sums are algebraically independent within the quasi-shuffle algebra. In this article we show that the basis sums can be represented within a tower of difference ring extensions where the constants remain unchanged. This property enables one to embed this difference ring for the (cyclotomic) harmonic sums into the ring of sequences. This construction implies that the sequences produced by the basis sums are algebraically independent over the rational sequences adjoined with the alternating sequence.

Connected through hyperedge HE-1 (induced by source paper "algorithms to solve coupled systems of differential equations in terms of power series"):
  with members:
    - "summation theory ii characterizations of boldsymbol r pi sigma extensions and algorithmic aspects"
    - "a toolbox to solve coupled systems of differential and difference equations"
    - "inverse mellin transform of holonomic sequences"
    - "a difference ring theory for symbolic summation"
    - "a streamlined difference ring theory indefinite nested sums the alternating sign and the parameterized telescoping problem"
    - "recent symbolic summation methods to solve coupled systems of differential and difference equations"
    - "modern summation methods for loop integrals in quantum field theory the packages sigma evaluatemultisums and sumproduction"
    - "complexity estimates for two uncoupling algorithms"

Connected through hyperedge HE-2 (induced by source paper "summation theory ii characterizations of boldsymbol r pi sigma extensions and algorithmic aspects"):
  with members:
    - "a difference ring theory for symbolic summation"
    - "a streamlined difference ring theory indefinite nested sums the alternating sign and the parameterized telescoping problem"
    - "simplifying multiple sums in difference fields"
    - "creative telescoping for holonomic functions"
    - "fast algorithms for refined parameterized telescoping in difference fields"
    - "order degree curves for hypergeometric creative telescoping"
    - "on the existence of telescopers for mixed hypergeometric terms"
    - "parameterized telescoping proves algebraic independence of sums"

Connected through hyperedge HE-3 (induced by source paper "a toolbox to solve coupled systems of differential and difference equations"):
  with members:
    - "a difference ring theory for symbolic summation"
    - "a streamlined difference ring theory indefinite nested sums the alternating sign and the parameterized telescoping problem"
    - "recent symbolic summation methods to solve coupled systems of differential and difference equations"
    - "modern summation methods for loop integrals in quantum field theory the packages sigma evaluatemultisums and sumproduction"
    - "complexity estimates for two uncoupling algorithms"
    - "simplifying multiple sums in difference fields"
    - "a symbolic summation approach to feynman integral calculus"
    - "parameterized telescoping proves algebraic independence of sums"

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)