|  | The Medieval Modal Octagon and the S5 Lewis Modal System, p. 105, by Campos Benítez, Juan Manuel | 2012 | Degenerate Sigma-2 with Unconnectedness 4 | 4 | Square |
|  | The Medieval Modal Octagon and the S5 Lewis Modal System, p. 115, by Campos Benítez, Juan Manuel | 2012 | Buridan Sigma-4 | 6 | Rectangle |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 398, by Horn, Laurence | 2012 | Classical Sigma-2 | 3 | Square |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 400, by Horn, Laurence | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 400, by Horn, Laurence | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Triangle |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 400, by Horn, Laurence | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 401, by Horn, Laurence | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 401, by Horn, Laurence | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 402, by Horn, Laurence | 2012 | Classical Sigma-2 | 3 | Square |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 402, by Horn, Laurence | 2012 | Contrariety 3-clique | 3 | Triangle |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 402, by Horn, Laurence | 2012 | Classical Sigma-2 | 3 | Square |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 402, by Horn, Laurence | 2012 | Contrariety 3-clique | 3 | Triangle |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 402, by Horn, Laurence | 2012 | Classical Sigma-2 | 3 | Square |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 402, by Horn, Laurence | 2012 | Contrariety 3-clique | 3 | Triangle |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 406, by Horn, Laurence | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 408, by Horn, Laurence | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 412, by Horn, Laurence | 2012 | Classical Sigma-2 | 3 | Square |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 413, by Horn, Laurence | 2012 | Classical Sigma-2 | 3 | Square |
|  | Histoire d'*O: Lexical Pragmatics and the Geometry of Opposition, p. 403, by Horn, Laurence | 2012 | Non-Sigma | 3 | Pentagon |
|  | Oppositions in Rough Set Theory, p. 505, by Ciucci, Davide; Dubois, Didier; Prade, Henri | 2012 | Keynes-Johnson Sigma-4 | 7 | Cube |
|  | Oppositions in Rough Set Theory, p. 505, by Ciucci, Davide; Dubois, Didier; Prade, Henri | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Oppositions in Rough Set Theory, p. 506, by Ciucci, Davide; Dubois, Didier; Prade, Henri | 2012 | Classical Sigma-7 | 4 | Tetrahedron |
|  | Oppositions in Rough Set Theory, p. 508, by Ciucci, Davide; Dubois, Didier; Prade, Henri | 2012 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Oppositions in Rough Set Theory, p. 508, by Ciucci, Davide; Dubois, Didier; Prade, Henri | 2012 | Sigma-4 Graph | | Cube |
|  | Oppositions in Rough Set Theory, p. 509, by Ciucci, Davide; Dubois, Didier; Prade, Henri | 2012 | Classical Sigma-2 | 3 | Rectangle |