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 circulant approach to skew constacyclic codes"
  Abstract: We introduce circulant matrices that capture the structure of a skew-polynomial ring F[x;\theta] modulo the left ideal generated by a polynomial of the type x^n-a. This allows us to develop an approach to skew-constacyclic codes based on such circulants. Properties of these circulants are derived, and in particular it is shown that the transpose of a certain circulant is a circulant again. This recovers the well-known result that the dual of a skew-constacyclic code is a constacyclic code again. Special attention is paid to the case where x^n-a is two-sided.

Connected through hyperedge HE-1 (induced by source paper "skew polynomial rings and skew cyclic codes"):
  with members:
    - "skew and linearized reed solomon codes and maximum sum rank distance codes over any division ring"
    - "peterson gorenstein zierler algorithm for skew rs codes"
    - "on the roots and minimum rank distance of skew cyclic codes"
    - "some properties of skew codes over finite fields"

Connected through hyperedge HE-2 (induced by source paper "dual skew codes from annihilators transpose hamming ring extensions"):
  with members:
    - "generalized gabidulin codes over fields of any characteristic"
    - "peterson gorenstein zierler algorithm for skew rs codes"
    - "a sugiyama like decoding algorithm for convolutional codes"
    - "on skew polynomial codes and lattices from quotients of cyclic division algebras"
    - "ideal codes over separable ring extensions"
    - "skew constacyclic codes over finite chain rings"

Connected through hyperedge HE-3 (induced by source paper "how to obtain lattices from f sigma delta codes via a generalization of construction a"):
  with members:
    - "on skew polynomial codes and lattices from quotients of cyclic division algebras"
    - "information bit error rate and false positives in an mds code"
    - "finite nonassociative algebras obtained from twisted polynomials over chain rings"
    - "a note on linear codes and nonassociative algebras obtained from skew polynomial rings"
    - "the nonassociative algebras used to build fast decodable space time block codes"
    - "on self dual mrd codes"
    - "quotients of orders in cyclic algebras and space time codes"
    - "iterated space time code constructions from cyclic algebras"

Connected through hyperedge HE-4 (induced by source paper "a note on the duals of skew constacyclic codes"):
  with members:
    - "some properties of skew codes over finite fields"
    - "dual codes of product semi linear codes"
    - "skew constacyclic codes over finite chain rings"
    - "on the construction of skew quasi cyclic codes"

Connected through hyperedge HE-5 (induced by source paper "matroidal structure of skew polynomial rings with application to network coding"):
  with members:
    - "a matroid framework for noncoherent random network communications"
    - "coding for errors and erasures in random network coding"

Connected through hyperedge HE-6 (induced by source paper "finite nonassociative algebras obtained from twisted polynomials over chain rings"):
  with members:
    - "how to obtain lattices from f sigma delta codes via a generalization of construction a"
    - "on skew polynomial codes and lattices from quotients of cyclic division algebras"
    - "a note on linear codes and nonassociative algebras obtained from skew polynomial rings"
    - "the nonassociative algebras used to build fast decodable space time block codes"
    - "quotients of orders in cyclic algebras and space time codes"
    - "skew constacyclic codes over finite chain rings"

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)