(topology) A map from the circle, S1, to a topological space.(McLarty, p. 4)
Closed-curve Sentence Examples
If through every point of a small closed curve the vortex lines are drawn, a tube is obtained, and the fluid contained is called a vortex filament.
= -dQ+1dg2, and integrating round a closed curve (udx+vdy+wdz) =0, and the circulation in any circuit composed of the same fluid particles is constant; and if the motion is differential irrotational and due to a velocity function, the circulation is zero round all reconcilable paths.
Moreover, the case n=2 is the only one in which the critical orbit (27) can be regarded as the limiting form of a closed curve.