2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35489Simple calculations indicate that the partition function for a black hole is defined only if the temperature is fixed on a finite boundary. Consequences of this result are discussed. (Contribution to the Proceedings of the Lanczos Centenary Conference.)3 pages (plain TeX)General Relativity and Quantum CosmologyHigh Energy Physics - Theorytext