human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "Ovals and Hyperovals in Desarguesian Nets"):
  Abstract: We determine the Desarguesian planes which hold r-nets with ovals and those which hold r-nets with hyperovals for every r≤7.

Includes members:
  Member "The Non-Existence of Maximal Sets of Four Mutually Orthogonal Latin Squares of Order 8":
    also connected through other hyperedges:
      (none)

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Mathematics