The 4895 4-dimensional groups were enumerated by Harold Brown, Rolf Bülow, and Joachim Neubüser et al. (1978) Neubüser, Souvignier & Wondratschek (2002) corrected the number of enantiomorphic groups from 112 to 111, so total number of groups is 4783 + 111 = 4894. There are 44 enantiomorphic point groups in 4-dimensional space. If we consider enantiomorphic groups as different, the total number of point groups is 227 + 44 = 271. Brown, Harold; Bülow, Rolf; Neubüser, Joachim; Wondratschek, Hans; Zassenhaus, Hans (1978), Crystallographic groups of four-dimensional space, New York: Wiley-Interscience [John Wiley & Sons], ISBN978-0-471-03095-9, MR0484179 Neubüser, J.; Souvignier, B.; Wondratschek, H. (2002), "Corrections to Crystallographic Groups of Four-Dimensional Space by Brown et al. (1978) [New York: Wiley and Sons]", Acta Crystallographica Section A, 58 (Pt 3): 301, doi:10.1107/S0108767302001368, PMID11961294
In 3D, there are 230 crystallographic space group types, which reduces to 219 affine space group types because of some types being different from their mirror image; these are said to differ by enantiomorphous character (e.g. P3112 and P3212). Usually space group refers to 3D. They were enumerated independently by Barlow (1894), Fedorov (1891a) and Schönflies (1891). Barlow, W (1894), "Über die geometrischen Eigenschaften starrer Strukturen und ihre Anwendung auf Kristalle" [On the geometric properties of rigid structures and their application to crystals], Zeitschrift für Kristallographie, 23: 1–63, doi:10.1524/zkri.1894.23.1.1, S2CID102301331 Fedorov, E. S. (1891a), "Симметрія правильныхъ системъ фигуръ" [Simmetriya pravil'nykh sistem figur, The symmetry of regular systems of figures], Записки Императорского С.-Петербургского Минералогического Общества (Zapiski Imperatorskova Sankt Petersburgskova Mineralogicheskova Obshchestva, Proceedings of the Imperial St. Petersburg Mineralogical Society), 2nd series (in Russian), 28 (2): 1–146
English translation: Fedorov, E. S. (1971). Symmetry of Crystals. American Crystallographic Association Monograph No. 7. Translated by David and Katherine Harker. Buffalo, NY: American Crystallographic Association. pp. 50–131.
The 4895 4-dimensional groups were enumerated by Harold Brown, Rolf Bülow, and Joachim Neubüser et al. (1978) Neubüser, Souvignier & Wondratschek (2002) corrected the number of enantiomorphic groups from 112 to 111, so total number of groups is 4783 + 111 = 4894. There are 44 enantiomorphic point groups in 4-dimensional space. If we consider enantiomorphic groups as different, the total number of point groups is 227 + 44 = 271. Brown, Harold; Bülow, Rolf; Neubüser, Joachim; Wondratschek, Hans; Zassenhaus, Hans (1978), Crystallographic groups of four-dimensional space, New York: Wiley-Interscience [John Wiley & Sons], ISBN978-0-471-03095-9, MR0484179 Neubüser, J.; Souvignier, B.; Wondratschek, H. (2002), "Corrections to Crystallographic Groups of Four-Dimensional Space by Brown et al. (1978) [New York: Wiley and Sons]", Acta Crystallographica Section A, 58 (Pt 3): 301, doi:10.1107/S0108767302001368, PMID11961294
In 3D, there are 230 crystallographic space group types, which reduces to 219 affine space group types because of some types being different from their mirror image; these are said to differ by enantiomorphous character (e.g. P3112 and P3212). Usually space group refers to 3D. They were enumerated independently by Barlow (1894), Fedorov (1891a) and Schönflies (1891). Barlow, W (1894), "Über die geometrischen Eigenschaften starrer Strukturen und ihre Anwendung auf Kristalle" [On the geometric properties of rigid structures and their application to crystals], Zeitschrift für Kristallographie, 23: 1–63, doi:10.1524/zkri.1894.23.1.1, S2CID102301331 Fedorov, E. S. (1891a), "Симметрія правильныхъ системъ фигуръ" [Simmetriya pravil'nykh sistem figur, The symmetry of regular systems of figures], Записки Императорского С.-Петербургского Минералогического Общества (Zapiski Imperatorskova Sankt Petersburgskova Mineralogicheskova Obshchestva, Proceedings of the Imperial St. Petersburg Mineralogical Society), 2nd series (in Russian), 28 (2): 1–146
English translation: Fedorov, E. S. (1971). Symmetry of Crystals. American Crystallographic Association Monograph No. 7. Translated by David and Katherine Harker. Buffalo, NY: American Crystallographic Association. pp. 50–131.
Fedorov (1891b). Fedorov, E. S. (1891b). "Симметрія на плоскости" [Simmetrija na ploskosti, Symmetry in the plane]. Записки Императорского С.-Петербургского Минералогического Общества (Zapiski Imperatorskogo Sant-Petersburgskogo Mineralogicheskogo Obshchestva, Proceedings of the Imperial St. Petersburg Mineralogical Society). 2nd series (in Russian). 28: 345–390.
Fedorov (1891a). Fedorov, E. S. (1891a), "Симметрія правильныхъ системъ фигуръ" [Simmetriya pravil'nykh sistem figur, The symmetry of regular systems of figures], Записки Императорского С.-Петербургского Минералогического Общества (Zapiski Imperatorskova Sankt Petersburgskova Mineralogicheskova Obshchestva, Proceedings of the Imperial St. Petersburg Mineralogical Society), 2nd series (in Russian), 28 (2): 1–146
English translation: Fedorov, E. S. (1971). Symmetry of Crystals. American Crystallographic Association Monograph No. 7. Translated by David and Katherine Harker. Buffalo, NY: American Crystallographic Association. pp. 50–131.
The 4895 4-dimensional groups were enumerated by Harold Brown, Rolf Bülow, and Joachim Neubüser et al. (1978) Neubüser, Souvignier & Wondratschek (2002) corrected the number of enantiomorphic groups from 112 to 111, so total number of groups is 4783 + 111 = 4894. There are 44 enantiomorphic point groups in 4-dimensional space. If we consider enantiomorphic groups as different, the total number of point groups is 227 + 44 = 271. Brown, Harold; Bülow, Rolf; Neubüser, Joachim; Wondratschek, Hans; Zassenhaus, Hans (1978), Crystallographic groups of four-dimensional space, New York: Wiley-Interscience [John Wiley & Sons], ISBN978-0-471-03095-9, MR0484179 Neubüser, J.; Souvignier, B.; Wondratschek, H. (2002), "Corrections to Crystallographic Groups of Four-Dimensional Space by Brown et al. (1978) [New York: Wiley and Sons]", Acta Crystallographica Section A, 58 (Pt 3): 301, doi:10.1107/S0108767302001368, PMID11961294
In 3D, there are 230 crystallographic space group types, which reduces to 219 affine space group types because of some types being different from their mirror image; these are said to differ by enantiomorphous character (e.g. P3112 and P3212). Usually space group refers to 3D. They were enumerated independently by Barlow (1894), Fedorov (1891a) and Schönflies (1891). Barlow, W (1894), "Über die geometrischen Eigenschaften starrer Strukturen und ihre Anwendung auf Kristalle" [On the geometric properties of rigid structures and their application to crystals], Zeitschrift für Kristallographie, 23: 1–63, doi:10.1524/zkri.1894.23.1.1, S2CID102301331 Fedorov, E. S. (1891a), "Симметрія правильныхъ системъ фигуръ" [Simmetriya pravil'nykh sistem figur, The symmetry of regular systems of figures], Записки Императорского С.-Петербургского Минералогического Общества (Zapiski Imperatorskova Sankt Petersburgskova Mineralogicheskova Obshchestva, Proceedings of the Imperial St. Petersburg Mineralogical Society), 2nd series (in Russian), 28 (2): 1–146
English translation: Fedorov, E. S. (1971). Symmetry of Crystals. American Crystallographic Association Monograph No. 7. Translated by David and Katherine Harker. Buffalo, NY: American Crystallographic Association. pp. 50–131.
In 3D, there are 230 crystallographic space group types, which reduces to 219 affine space group types because of some types being different from their mirror image; these are said to differ by enantiomorphous character (e.g. P3112 and P3212). Usually space group refers to 3D. They were enumerated independently by Barlow (1894), Fedorov (1891a) and Schönflies (1891). Barlow, W (1894), "Über die geometrischen Eigenschaften starrer Strukturen und ihre Anwendung auf Kristalle" [On the geometric properties of rigid structures and their application to crystals], Zeitschrift für Kristallographie, 23: 1–63, doi:10.1524/zkri.1894.23.1.1, S2CID102301331 Fedorov, E. S. (1891a), "Симметрія правильныхъ системъ фигуръ" [Simmetriya pravil'nykh sistem figur, The symmetry of regular systems of figures], Записки Императорского С.-Петербургского Минералогического Общества (Zapiski Imperatorskova Sankt Petersburgskova Mineralogicheskova Obshchestva, Proceedings of the Imperial St. Petersburg Mineralogical Society), 2nd series (in Russian), 28 (2): 1–146
English translation: Fedorov, E. S. (1971). Symmetry of Crystals. American Crystallographic Association Monograph No. 7. Translated by David and Katherine Harker. Buffalo, NY: American Crystallographic Association. pp. 50–131.
