|  | From the Square to Octahedra, p. 258, by García-Cruz, José David | 2017 | Classical Sigma-2 | 3 | Square |
|  | From the Square to Octahedra, p. 259, by García-Cruz, José David | 2017 | A Single PCD | 2 | Digon |
|  | From the Square to Octahedra, p. 259, by García-Cruz, José David | 2017 | A Single PCD | 2 | Digon |
|  | From the Square to Octahedra, p. 259, by García-Cruz, José David | 2017 | Jacoby-Sesmat-Blanché Sigma-3 | 4 | Octahedron |
|  | From the Square to Octahedra, p. 261, by García-Cruz, José David | 2017 | A Single PCD | 2 | Digon |
|  | From the Square to Octahedra, p. 261, by García-Cruz, José David | 2017 | A Single PCD | 2 | Digon |
|  | From the Square to Octahedra, p. 261, by García-Cruz, José David | 2017 | Jacoby-Sesmat-Blanché Sigma-3 | 4 | Octahedron |
|  | From the Square to Octahedra, p. 263, by García-Cruz, José David | 2017 | Jacoby-Sesmat-Blanché Sigma-3 | 4 | Hexagon |
|  | From the Square to Octahedra, p. 263, by García-Cruz, José David | 2017 | Jacoby-Sesmat-Blanché Sigma-3 | 4 | Hexagon |
|  | From the Square to Octahedra, p. 264, by García-Cruz, José David | 2017 | Classical Sigma-2 | 3 | Rectangle |
|  | From the Square to Octahedra, p. 264, by García-Cruz, José David | 2017 | Classical Sigma-2 | 3 | Rectangle |
|  | From the Square to Octahedra, p. 264, by García-Cruz, José David | 2017 | Jacoby-Sesmat-Blanché Sigma-3 | 4 | Hexagon |
|  | An Arithmetization of Logical Oppositions, p. 232, by Schang, Fabien | 2017 | Classical Sigma-2 | 3 | Square |
|  | An Arithmetization of Logical Oppositions, p. 232, by Schang, Fabien | 2017 | Non-Sigma | 3 | Triangle |
|  | An Arithmetization of Logical Oppositions, p. 232, by Schang, Fabien | 2017 | Non-Sigma | 3 | Triangle |
|  | From the Square to Octahedra, p. 265, by García-Cruz, José David | 2017 | Moretti-Pellissier Sigma-4 | 4 | Hexagonal Bipyramid |
|  | From the Square to Octahedra, p. 268, by García-Cruz, José David | 2017 | Classical Sigma-2 | 3 | Square |
|  | From the Square to Octahedra, p. 268, by García-Cruz, José David | 2017 | Classical Sigma-2 | 3 | Square |
|  | From the Square to Octahedra, p. 269, by García-Cruz, José David | 2017 | Keynes-Johnson Sigma-4 | 7 | Hexagonal Bipyramid |
|  | From the Square to Octahedra, p. 270, by García-Cruz, José David | 2017 | Moretti-Pellissier Sigma-4 | 4 | Cube |
|  | From the Square to Octahedra, p. 270, by García-Cruz, José David | 2017 | Moretti-Pellissier Sigma-4 | 4 | Octagon |
|  | From the Square to Octahedra, p. 271, by García-Cruz, José David | 2017 | Keynes-Johnson Sigma-4 | 7 | Octagon |
|  | Iconic and Dynamic Models to Represent "Distinctive" Predicates: The Octagonal Prism and the Complex Tetrahedron of Opposition, p. 274, by Cavaliere, Ferdinando | 2017 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Iconic and Dynamic Models to Represent "Distinctive" Predicates: The Octagonal Prism and the Complex Tetrahedron of Opposition, p. 274, by Cavaliere, Ferdinando | 2017 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Hexagon |
|  | Iconic and Dynamic Models to Represent "Distinctive" Predicates: The Octagonal Prism and the Complex Tetrahedron of Opposition, p. 274, by Cavaliere, Ferdinando | 2017 | Jacoby-Sesmat-Blanché Sigma-3 | 3 | Triangular Prism |