Greg Hjorth

According to our database, Greg Hjorth authored at least 34 papers between 1993 and 2013.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of three.

2013

Universal sets for pointsets properly on the <i>n</i>^th level of the projective hierarchy.

Greg Hjorth, Leigh Humphries, Arnold W. Miller

J. Symb. Log., 2013

2012

Treeable Equivalence Relations.

Greg Hjorth

J. Math. Log., 2012

2011

Borel structures and Borel theories.

Greg Hjorth, André Nies

J. Symb. Log., 2011

2010

Uniquely undefinable elements.

Greg Hjorth

J. Symb. Log., 2010

2009

Independently axiomatizable <i>L</i>_{omega₁, omega} theories.

Greg Hjorth, Ioannis A. Souldatos

J. Symb. Log., 2009

Glimm-Effros for coanalytic equivalence relations.

Greg Hjorth

J. Symb. Log., 2009

2008

Borel equivalence relations which are highly unfree.

Greg Hjorth

J. Symb. Log., 2008

From Automatic Structures to Borel Structures.

Greg Hjorth, Bakhadyr Khoussainov, Antonio Montalbán, André Nies

Proceedings of the Twenty-Third Annual IEEE Symposium on Logic in Computer Science, 2008

2007

A Note on Counterexamples to the Vaught Conjecture.

Greg Hjorth

Notre Dame J. Formal Log., 2007

Effective Cardinals of Boldface pointclasses.

Alessandro Andretta, Greg Hjorth, Itay Neeman

J. Math. Log., 2007

2006

The Classification Problem for P-Local torsion-Free Abelian Groups of Rank two.

Greg Hjorth, Simon Thomas

J. Math. Log., 2006

A lemma for cost attained.

Greg Hjorth

Ann. Pure Appl. Log., 2006

2005

Bi-Borel reducibility of essentially countable Borel equivalence relations.

Greg Hjorth

J. Symb. Log., 2005

2002

A Dichotomy Theorem for Turbulence.

Greg Hjorth

J. Symb. Log., 2002

Cardinalities in the Projective Hierarchy.

Greg Hjorth

J. Symb. Log., 2002

Knight's Model, its automorphism Group, and Characterizing the uncountable Cardinals.

Greg Hjorth

J. Math. Log., 2002

2001

A Boundedness Lemma for Iterations.

Greg Hjorth

J. Symb. Log., 2001

2000

Actions by The Classical Banach Spaces.

Greg Hjorth

J. Symb. Log., 2000

1998

An Absoluteness Principle for Borel Sets.

Greg Hjorth

J. Symb. Log., 1998

Borel Equivalence Relations Induced by Actions of the Symmetric Group.

Greg Hjorth, Alexander S. Kechris, Alain Louveau

Ann. Pure Appl. Log., 1998

1997

Some Applications of Coarse Inner Model Theory.

Greg Hjorth

J. Symb. Log., 1997

New dichotomies for Borel equivalence relations.

Greg Hjorth, Alexander S. Kechris

Bull. Symb. Log., 1997

Strong Cardinals in the Core Model.

Kai Hauser, Greg Hjorth

Ann. Pure Appl. Log., 1997

1996

On aleph₁ Many Minimal Models.

Greg Hjorth

J. Symb. Log., 1996

Variations of the Martin-Solovay Tree.

Greg Hjorth

J. Symb. Log., 1996

Two applications of inner model theory to the study of Sigma¹₂ sets.

Greg Hjorth

Bull. Symb. Log., 1996

Borel Equivalence Relations and Classifications of Countable Models.

Greg Hjorth, Alexander S. Kechris

Ann. Pure Appl. Log., 1996

Pi¹₂ Wadge Degrees.

Greg Hjorth

Ann. Pure Appl. Log., 1996

Some applications of illfoundedness.

Greg Hjorth

Arch. Math. Log., 1996

1995

Analytic Equivalence Relations and Ulm-Type Classifications.

Greg Hjorth, Alexander S. Kechris

J. Symb. Log., 1995

A Dichotomy for the Definable Universe.

Greg Hjorth

J. Symb. Log., 1995

Regularity Properties for Dominating Projective Sets.

Jörg Brendle, Greg Hjorth, Otmar Spinas

Ann. Pure Appl. Log., 1995

1994

Π₁¹ Wellfounded Relations.

Greg Hjorth

Notre Dame J. Formal Log., 1994

1993

Thin Equivalence Relations and Effective Decompositions.

Greg Hjorth

J. Symb. Log., 1993