Figure 1From: Tangent-point energies and ropelength as Gamma-limits of discrete tangent-point energies on biarc curvesLeft and middle: Examples of biarcs, \(t_{m}\) is the tangent at the common matching point m. Right: The circles \(C_{0}\), \(C_{1}\), \(C_{+}\), and \(C_{-}\) of Definition 2.2. Images taken from [31, Figs. 4.1 and 4.3] by courtesy of Jana SmutnyBack to article page