Original: The text Grundlagen der Geometrie (tr.: Foundations of Geometry) published by Hilbert in 1899 proposes a formal set, the Hilbert's axioms, substituting the traditional axioms of Euclid.
Simplified: The text Grundlagen der Geometrie (Foundations of Geometry) was published by Hilbert in 1899. It proposed a formal set, Hilbert's axioms, instead of the traditional axioms of Euclid.