info prev up next book cdrom email home

Hadwiger's Principal Theorem

The Vectors $\pm{\bf a}_1$, ..., $\pm{\bf a}_n$ in a 3-space form a normalized Eutactic Star Iff $T{\bf x}={\bf x}$ for all ${\bf x}$ in the 3-space.




© 1996-9 Eric W. Weisstein
1999-05-25