In mathematics, a Hilbert modular surface or Hilbert–Blumenthal surface is one of the surfaces obtained by taking a quotient of a product of two copies of the upper half-plane by a Hilbert modular group.
Hilbert modular surfaces were first described by Otto Blumenthal (1903, 1904) using some unpublished notes written by Hilbert about 10 years before.
Read more about Hilbert Modular Surface: Definitions, Singularities, Classification of Surfaces, Examples
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