ACTA MATHEMATICA UNIVERSITATIS COMENIANAE

Vol. LXXVI, (2007)
p. 241 - 246

On the Volume of the Trajectory Surfaces under the Homothetic Motions
M. Duldul and N. Kuruoglu


Abstract.  The volumes of the surfaces of 3-dimensional Euclidean Space which are traced by a fixed point as a trajectory surface during 3-parametric motions are given by H. R. Muller [3], [4], [5] and W. Blaschke [1].
In this paper, the volumes of the trajectory surfaces of fixed points under 3-parametric homothetic motions are computed. Also, using a certain pseudo-Euclidean metric we generalized the well-known classical Holditch Theorem, [2], to the trajectory surfaces.

Keywords:   homothetic motion, Holditch theorem, volume of trajectory surface.

AMS Subject classification.  Primary: 53A17.

Download:     Adobe PDF     Compressed Postscript      

Version to read:     Adobe PDF

Acta Mathematica Universitatis Comenianae
Faculty of Mathematics, Physics and Informatics
Comenius University
842 48 Bratislava, Slovak Republic  

Telephone: + 421-2-60295755 Fax: + 421-2-65425882  
e-Mail: amuc@fmph.uniba.sk   Internet: www.iam.fmph.uniba.sk/amuc

© Copyright 2007, ACTA MATHEMATICA UNIVERSITATIS COMENIANAE