In geometry, a tractrix (from Latin trahere 'to pull, drag'; plural: tractrices) is the curve along which an object moves, under the influence of friction...

meridians of the pseudosphere and the vertical geodesics x = c to the tractrices that generate the pseudosphere. This mapping is a local isometry, and...

(t-\tanh t,1/\cosh t),} and is thus a tractrix. The other involutes are not tractrices, as they are parallel curves of a tractrix. The parametric representation...