Definable Davies' theorem

• Autorzy: Asger Törnquist , William Weiss
• Języki publikacji: EN

Abstrakty

EN

We prove the following descriptive set-theoretic analogue of a theorem of R. O. Davies: Every Σ¹₂ function f:ℝ × ℝ → ℝ can be represented as a sum of rectangular Σ¹₂ functions if and only if all reals are constructible.

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Fundamenta Mathematicae
• Rocznik: 2009
• Tom: 205
• Numer: 1
• Strony: 77-89

Daty

wydano

2009

Twórcy

autor

Asger Törnquist

• Kurt Gödel Research Center, University of Vienna, Währinger Strasse 25, 1090 Wien, Austria

autor

William Weiss

• Department of Mathematics, University of Toronto, 40 St. George Street, Room 6092, Toronto, Ontario, Canada

Identyfikatory

DOI

10.4064/fm205-1-4