| | From the Square to Octahedra, p. 255, by García-Cruz, José David | 2017 | Classical Sigma-2 | 3 | Square |
| | From the Square to Octahedra, p. 256, by García-Cruz, José David | 2017 | Classical Sigma-2 | 3 | Square |
| | From the Square to Octahedra, p. 256, by García-Cruz, José David | 2017 | Classical Sigma-2 | 3 | Square |
| | 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 |