Geodesic
(n,2)-Axonometries and the Contour of Hyperspheres
Journal for geometry and graphics, Tome 1 (1997) no. 2, pp. 157-168.

Voir la notice de l'article provenant de la source Heldermann Verlag

The paper deals with special axonometric mappings of an n-dimensional Euclidean space onto a plane $\pi'$. Such an (n,2)-axonometry is given by the image of a cartesian n-frame in $\pi'$ and it is especially an isocline or orthographic axonometry, if the contour of a hypershere is a circle in $\pi'$. The paper discusses conditions under which the image of the cartesian n-frame defines an orthographic axonometry. Also a recursive construction of the hypersphere-contour in case of an arbitrary given oblique axonometry is presented. 
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     author = {G. Weiss},
     title = {(n,2)-Axonometries and the {Contour} of {Hyperspheres}},
     journal = {Journal for geometry and graphics},
     pages = {157--168},
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1997},
     url = {http://geodesic.mathdoc.fr/item/JGG_1997_1_2_a5/}
}
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G. Weiss. (n,2)-Axonometries and the Contour of Hyperspheres. Journal for geometry and graphics, Tome 1 (1997) no. 2, pp. 157-168. http://geodesic.mathdoc.fr/item/JGG_1997_1_2_a5/