2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/231186Generalising expressions given by Komar, we give precise definitions of gravitational mass and solitonic NUT charge and we apply these to the description of a class of Minkowski-signature multi-Taub-NUT solutions without rod singularities. A Wick rotation then yields the corresponding class of Euclidean-signature gravitational multi-instantons.Some references addedHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext