During the 4th World Congress on Universal Logic to happen in Rio de 
Janeiro, April 3-7, 2013 there will be a contest like in the preceding 
editions of the event. For this edition the theme is

SCOPE OF LOGIC THEOREMS

Any paper dealing with the scope of validity and domain of application of 
logic theorems is welcome, in particular those dealing with the following 
theorems:

Löwenheim-Skolem (1915-1920)
completeness (Post 1921 - Gödel 1930)
incompleteness (Gödel 1931)
cut-elimination (Gentzen 1934)
undefinability (Tarski 1936)
undecidability (Church-Turing, 1936)
Lindenbaum's extension lemma (1937)
compactness (Malcev 1938)
incompleteness for modal logic (Dugundji 1940)
Ehrenfeucht-Fraïssé (1950-1961)
Beth's definability theorem (1953)
Craig's interpolation theorem (1957)
completeness for modal logic (Kripke 1959)
independence of CH (Cohen 1963)

Papers shoud be sent by February 28, 2013 to 
logic.theorem@logica-universalis.org The best papers will be selected for 
presentation in a special session during the event and a jury will decide 
who is the winner. The members of the jury are Yuri Gurevich, Daniele 
Mundici and Hiroakira Ono.

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World Congress and School on Universal Logic
Montreux 2005 - Xi'an 2007 - Lisbon 2010 - Rio 2013
http://www.uni-log.org/
Logica Universalis
http://www.logica-universalis.org