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: "a few more quadratic apn functions"
  Abstract: We present two infinite families of APN functions where the degree of the field is divisible by 3 but not 9. Our families contain two already known families as special cases. We also discuss the inequivalence proof (by computation) which shows that these functions are new.

Connected through hyperedge HE-1 (induced by source paper "new results about the boomerang uniformity of permutation polynomials"):
  with members:
    - "on the boomerang uniformity of quadratic permutations over f 2 n"
    - "a highly nonlinear differentially 4 uniform power mapping that permutes fields of even degree"

Connected through hyperedge HE-2 (induced by source paper "differentially low uniform permutations from known 4 uniform functions"):
  with members:
    - "a highly nonlinear differentially 4 uniform power mapping that permutes fields of even degree"

Connected through hyperedge HE-3 (induced by source paper "a new construction of differentially 4 uniform permutations over f_ 2 2k"):
  with members:
    - "more constructions of differentially 4 uniform permutations on gf_ 2 2k"

Connected through hyperedge HE-4 (induced by source paper "on a class of quadratic polynomials with no zeros and its application to apn functions"):
  with members:
    - "triple error correcting bch like codes"

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.IT(Information Theory)