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| rdfs | http://www.w3.org/2000/01/rdf-schema# |
| rdf | http://www.w3.org/1999/02/22-rdf-syntax-ns# |
| xsdh | http://www.w3.org/2001/XMLSchema# |
| dbpedia | http://dbpedia.org/resource/ |
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In mathematics, the Hessian group is a finite group of order 216, introduced by Jordan (1877) who named it for Otto Hesse, given by the group of determinant 1 affine transformations of the affine plane over the field of 3 elements. It acts on the Hesse pencil and the Hesse configuration. Its triple cover is a complex reflection group of order 648, and the product of this with a group of order 2 is another complex reflection group.