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Generalising expressions given by Komar, we give precise definitions ofgravitational mass and solitonic NUT charge and we apply these to thedescription of a class of Minkowski-signature multi-Taub-NUT solutions withoutrod singularities. A Wick rotation then yields the corresponding class ofEuclidean-signature gravitational multi-instantons.

Gravitational multi-NUT solitons, Komar masses and charges