The centroid and circumcentre of a plane convex set

H. G. Eggleston

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Photographic Determination of Heliographic Coordinates of Sunspots Without Taking Double Photos

Aleksandar Tomić (1976)

Publications of Department of Astronomy

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Regular triangles and isoclinic triangles in the Grassmann $G_{2} (ℝ^{N})$ .

Masala, G. (1999)

Rendiconti del Seminario Matematico

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An example of a non-degenerate precession possessing two distinct pairs of axes

Giancarlo Cantarelli, Corrado Risito (2003)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

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In the present paper we provide an interesting example of a non-degenerate precession possessing two distinct pairs $(p, f)$ , $(p^{'}, f^{'})$ of axes of precession and figure. Thus the problem arises of the existence of classes of precessions possessing a unique axis of precession and a unique axis of figure. In the fourth section we show that the class of non-degenerate regular precessions enjoys this property.