the
reconstruction, and might be larger than in the physical phase space. Such
additional exponents are called <I>spurious</I>, and there are several
suggestions to either avoid them&nbsp;[<A HREF="citation.html#spurious">68</A>] or to identify them. Moreover,
it is plausible that only as many exponents can be determined from a time
series as are entering the Kaplan Yorke formula (see below). To give a simple
example: Consider motion of a high-dimensional system on a stable limit
cycle. The data cannot cont