Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Parameterized curve evolution. The parametrization travels with a particle. In general, the parametrization will not stay uniformly spaced. The black disk and the asterisk indicate particles attached to the curve; their assigned value for p will stay the same throughout the evolution.
