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Note on the thirty-two classes of symmetry
1907
Mineralogical Magazine and Journal of the Mineralogical Society
Considerable confusion exists with regard to the nomenclature of the thirty-two possible classes of symmetry and their classification into systems. Each class is usually denoted by a name and a symbol ; but as every author invents his own names and symbols (the latter being often merely arbitrary numbers) the whole nomenclature is hopelessly confused. This is due to the fact that a different classification into systems, and consequently a different nomenclature is suggested according as the
doi:10.1180/minmag.1907.014.66.10
fatcat:u6yjzcr2ibg7nl4cl34voqzafi