@InProceedings{bulatov_et_al:DagSemProc.09441.1,
  author =	{Bulatov, Andrei A. and Grohe, Martin and Kolaitis, Phokion G. and Krokhin, Andrei},
  title =	{{09441 Abstracts Collection – The Constraint Satisfaction Problem: Complexity and Approximability}},
  booktitle =	{The Constraint Satisfaction Problem: Complexity and Approximability},
  pages =	{1--14},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9441},
  editor =	{Andrei A. Bulatov and Martin Grohe and Phokion G. Kolaitis and Andrei Krokhin},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09441.1},
  URN =		{urn:nbn:de:0030-drops-23710},
  doi =		{10.4230/DagSemProc.09441.1},
  annote =	{Keywords: Constraint satisfaction problem (CSP), satisfiability, computational complexity, CSP dichotomy conjecture, hardness of approximation, unique games conjecture, universal algebra, logic}
}
@InProceedings{bulatov_et_al:DagSemProc.09441.2,
  author =	{Bulatov, Andrei A. and Grohe, Martin and Kolaitis, Phokion G. and Krokhin, Andrei},
  title =	{{09441 Executive Summary – The Constraint Satisfaction Problem: Complexity and Approximability}},
  booktitle =	{The Constraint Satisfaction Problem: Complexity and Approximability},
  pages =	{1--2},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9441},
  editor =	{Andrei A. Bulatov and Martin Grohe and Phokion G. Kolaitis and Andrei Krokhin},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09441.2},
  URN =		{urn:nbn:de:0030-drops-23706},
  doi =		{10.4230/DagSemProc.09441.2},
  annote =	{Keywords: Constraint satisfaction problem (CSP), satisfiability, computational complexity, CSP dichotomy conjecture, hardness of approximation, unique games conjecture, universal algebra, logic}
}
@InProceedings{valeriote_et_al:DagSemProc.09441.3,
  author =	{Valeriote, Matt and Bova, Simone and Chen, Hubie},
  title =	{{On the Expression Complexity of Equivalence and Isomorphism of Primitive Positive Formulas}},
  booktitle =	{The Constraint Satisfaction Problem: Complexity and Approximability},
  pages =	{1--20},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9441},
  editor =	{Andrei A. Bulatov and Martin Grohe and Phokion G. Kolaitis and Andrei Krokhin},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09441.3},
  URN =		{urn:nbn:de:0030-drops-23690},
  doi =		{10.4230/DagSemProc.09441.3},
  annote =	{Keywords: Expression complexity, equivalence, isomorphism, primitive positive formulas}
}
@InProceedings{willard:DagSemProc.09441.4,
  author =	{Willard, Ross},
  title =	{{PP-DEFINABILITY IS CO-NEXPTIME-COMPLETE}},
  booktitle =	{The Constraint Satisfaction Problem: Complexity and Approximability},
  pages =	{1--15},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9441},
  editor =	{Andrei A. Bulatov and Martin Grohe and Phokion G. Kolaitis and Andrei Krokhin},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09441.4},
  URN =		{urn:nbn:de:0030-drops-23680},
  doi =		{10.4230/DagSemProc.09441.4},
  annote =	{Keywords: Primitive positive formula, definability, complexity}
}
@InProceedings{martin_et_al:DagSemProc.09441.5,
  author =	{Martin, Barnaby and Martin, Jos},
  title =	{{The complexity of positive first-order logic without equality II: The four-element case}},
  booktitle =	{The Constraint Satisfaction Problem: Complexity and Approximability},
  pages =	{1--12},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9441},
  editor =	{Andrei A. Bulatov and Martin Grohe and Phokion G. Kolaitis and Andrei Krokhin},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09441.5},
  URN =		{urn:nbn:de:0030-drops-23670},
  doi =		{10.4230/DagSemProc.09441.5},
  annote =	{Keywords: Quantified constraints, Galois connection}
}