torus

A hollow torus can be cut twice — once around the tube and then along the resulting cylinder — so by this definition, it has two holes.

If the surface does not have a boundary, like a torus, the first cut must begin and end at the same point.

That there are two one-dimensional loops from which all others can be built means that the Betti number of the torus in dimension one is 2, the same as the number of Riemann’s cuts.

At each corner of the black marble bases, and touching the torus of the column, the head of a bird or animal has been carved.

The lateral arcades have similar capitals but only one torus.

At this time each pistil loosens from the torus and can be easily removed, especially if some animal touch the hooks.

The slender torus usually distinguished the eight-branch Plantagenet type, and its use here for simple diagonals is an exception.

As time went on profiles deteriorated, sharp prismatic molds succeeding to the virile torus, or molds fluid and vague.