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: "theory presentation combinators"
  Abstract: We motivate and give semantics to theory presentation combinators as the foundational building blocks for a scalable library of theories. The key observation is that the category of contexts and fibered categories are the ideal theoretical tools for this purpose.

Connected through hyperedge HE-1 (induced by source paper "building on the diamonds between theories theory presentation combinators"):
  with members:
    - "rapid prototyping formal systems in mmt 5 case studies"
    - "biform theories project description"
    - "the biequivalence of locally cartesian closed categories and martin lof type theories"
    - "the mathscheme library some preliminary experiments"
    - "type classes for mathematics in type theory"
    - "a scalable module system"
    - "on duplication in mathematical repositories"

Connected through hyperedge HE-2 (induced by source paper "rapid prototyping formal systems in mmt 5 case studies"):
  with members:
    - "the mmt api a generic mkm system"
    - "a query language for formal mathematical libraries"
    - "type classes for mathematics in type theory"
    - "a scalable module system"
    - "the abella interactive theorem prover system description"

Connected through hyperedge HE-3 (induced by source paper "biform theories project description"):
  with members:
    - "hol light qe"
    - "incorporating quotation and evaluation into church s type theory"
    - "theory morphisms in church s type theory with quotation and evaluation"
    - "formalizing mathematical knowledge as a biform theory graph a case study"
    - "realms a structure for consolidating knowledge about mathematical theories"
    - "a universal machine for biform theory graphs"
    - "the formalization of syntax based mathematical algorithms using quotation and evaluation"
    - "the mathscheme library some preliminary experiments"

Connected through hyperedge HE-4 (induced by source paper "realms a structure for consolidating knowledge about mathematical theories"):
  with members:
    - "a scalable module system"
    - "towards mkm in the large modular representation and scalable software architecture"

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.LO(Logic in Computer Science)