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: "skew constacyclic codes over finite chain rings"
  Abstract: Skew polynomial rings over finite fields ([7] and [10]) and over Galois rings ([8]) have been used to study codes. In this paper, we extend this concept to finite chain rings. Properties of skew constacyclic codes generated by monic right divisors of $x^n-\lambda$, where $\lambda$ is a unit element, are exhibited. When $\lambda^2=1$, the generators of Euclidean and Hermitian dual codes of such codes are determined together with necessary and sufficient conditions for them to be Euclidean and Hermitian self-dual. Of more interest are codes over the ring $\mathbb{F}_{p^m}+u\mathbb{F}_{p^m}$. The structure of all skew constacyclic codes is completely determined. This allows us to express generators of Euclidean and Hermitian dual codes of skew cyclic and skew negacyclic codes in terms of the generators of the original codes. An illustration of all skew cyclic codes of length~2 over $\mathbb{F}_{3}+u\mathbb{F}_{3}$ and their Euclidean and Hermitian dual codes is also provided.

Connected through hyperedge HE-1 (induced by source paper "polyadic constacyclic codes over a non chain ring mathbb f _ q u v langle f u g v uv vu rangle f q u v f u g v u v v u"):
  with members:
    - "iso orthogonality and type ii duadic constacyclic codes"
    - "polyadic constacyclic codes"
    - "quadratic residue codes over f_p vf_p and their gray images"

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"
    - "a circulant approach to skew constacyclic codes"
    - "ideal codes over separable ring extensions"

Connected through hyperedge HE-3 (induced by source paper "a note on the duals of skew constacyclic codes"):
  with members:
    - "some properties of skew codes over finite fields"
    - "a circulant approach to skew constacyclic codes"
    - "dual codes of product semi linear codes"
    - "on the construction of skew quasi cyclic codes"

Connected through hyperedge HE-4 (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"
    - "a circulant approach to skew constacyclic codes"
    - "quotients of orders in cyclic algebras and space time codes"

Connected through hyperedge HE-5 (induced by source paper "on the codes over the z_3 vz_3 v 2z_3"):
  with members:
    - "skew generalized quasi cyclic codes over finite fields"
    - "on the construction of skew quasi cyclic codes"

Connected through hyperedge HE-6 (induced by source paper "on skew cyclic codes over fq vfq v 2 fq"):
  with members:
    - "on the construction of skew quasi cyclic 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)