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: "translating equality downwards"
  Abstract: Downward translation of equality refers to cases where a collapse of some pair of complexity classes would induce a collapse of some other pair of complexity classes that (a priori) one expects are smaller. Recently, the first downward translation of equality was obtained that applied to the polynomial hierarchy---in particular, to bounded access to its levels. In this paper, we provide a much broader downward translation that subsumes not only that downward translation but also that translationUs elegant enhancement by Buhrman and Fortnow. Our work also sheds light on previous research on the structure of refined polynomial hierarchies.

Connected through hyperedge HE-1 (induced by source paper "what s up with downward collapse using the easy hard technique to link boolean and polynomial hierarchy collapses"):
  with members:
    - "a downward collapse within the polynomial hierarchy"
    - "unambiguous computation boolean hierarchies and sparse turing complete sets"
    - "downward collapse from a weaker hypothesis"

Connected through hyperedge HE-2 (induced by source paper "query order and the polynomial hierarchy"):
  with members:
    - "what s up with downward collapse using the easy hard technique to link boolean and polynomial hierarchy collapses"
    - "a downward collapse within the polynomial hierarchy"
    - "an introduction to query order"

Connected through hyperedge HE-3 (induced by source paper "a downward collapse within the polynomial hierarchy"):
  with members:
    - "what s up with downward collapse using the easy hard technique to link boolean and polynomial hierarchy collapses"
    - "unambiguous computation boolean hierarchies and sparse turing complete sets"

Connected through hyperedge HE-4 (induced by source paper "an introduction to query order"):
  with members:
    - "a downward collapse within the polynomial hierarchy"

Connected through hyperedge HE-5 (induced by source paper "downward collapse from a weaker hypothesis"):
  with members:
    - "what s up with downward collapse using the easy hard technique to link boolean and polynomial hierarchy collapses"
    - "a downward collapse within the polynomial hierarchy"
    - "an introduction to query order"

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.CC(Computational Complexity)