English: Bow diagram corresponding to wikipedia:Taub–NUT space, following Sergey A. Cherkis, "Instantons on Gravitons, arXiv:1007.0044, Figure 2. Also see Gaeta, G.; M. A. Rodríguez (2012), "Hyperkähler structure of the Taub–NUT metric", J. Nonlinear Math. Phys. 19:226, doi:10.1142/S1402925112500143 . This gives a diagram encoding the realization of Taub–NUT space via hyperkähler reduction from Nahm data. Here, l describes the size of the Taub–NUT circle fibre, and "1" means that the bundle living on the interval [-l/2, l/2] is a line bundle.