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: "systems of mds codes from units and idempotents"
  Abstract: Algebraic systems are constructed from which series of maximum distance separable (mds) codes are derived. The methods use unit and idempotent schemes.

Connected through hyperedge HE-1 (induced by source paper "maximum distance separable codes to order"):
  with members:
    - "linear complementary dual maximum distance separable codes"
    - "coding theory the unit derived methodology"
    - "entanglement assisted quantum error correcting codes from units"
    - "solving underdetermined systems with error correcting codes"
    - "codes from zero divisors and units in group rings"

Connected through hyperedge HE-2 (induced by source paper "linear complementary dual maximum distance separable codes"):
  with members:
    - "coding theory the unit derived methodology"
    - "linear codes over fq which are equivalent to lcd codes"
    - "new characterization and parametrization of lcd codes"
    - "complementary dual algebraic geometry codes"
    - "codes from zero divisors and units in group rings"

Connected through hyperedge HE-3 (induced by source paper "mds codes over finite fields"):
  with members:
    - "coding theory the unit derived methodology"
    - "codes from zero divisors and units in group rings"

Connected through hyperedge HE-4 (induced by source paper "coding theory the unit derived methodology"):
  with members:
    - "solving underdetermined systems with error correcting codes"
    - "convolutional codes from units in matrix and group rings"
    - "codes from zero divisors and units in group rings"
    - "self dual dual containing and related quantum codes from group rings"

Connected through hyperedge HE-5 (induced by source paper "quantum error correcting codes the unit derived strategy"):
  with members:
    - "coding theory the unit derived methodology"
    - "codes from zero divisors and units in group rings"
    - "self dual dual containing and related quantum codes from group rings"

Connected through hyperedge HE-6 (induced by source paper "solving underdetermined systems with error correcting codes"):
  with members:
    - "codes from zero divisors and units in group rings"

Connected through hyperedge HE-7 (induced by source paper "cryptography key exchange public key"):
  with members:
    - "codes from zero divisors and units in group 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)