human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "on modeling hard combinatorial optimization problems as linear programs refutations of the unconditional impossibility claims"):
  Abstract: There has been a series of developments in the recent literature (by essentially a same "circle" of authors) with the absolute/unconditioned (implicit or explicit) claim that there exists no abstraction of an NP-Complete combinatorial optimization problem in which the defining combinatorial configurations (such as "tours" in the case of the traveling salesman problem (TSP) for example) can be modeled by a polynomial-sized system of linear constraints. The purpose of this paper is to provide general as well as specific refutations for these recent claims.

Includes members:
  Member "some upper and lower bounds on psd rank":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "exploring the bounds on the positive semidefinite rank")
  Member "on the existence of 0 1 polytopes with high semidefinite extension complexity":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "computing approximate psd factorizations")
  Member "approximation limits of linear programs beyond hierarchies":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "compressing permutation groups into grammars and polytopes a graph embedding approach")
  Member "how to solve ksat in polynomial time":
    also connected through other hyperedges:
      (none)
  Member "the traveling salesman problem a linear programming formulation of":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "a o n 8 x o n 7 linear programming model of the quadratic assignment problem")

Question: Please tell me which class the source paper 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.CC(Computational Complexity)